Name: RFID 125kHz TK4100 access control keychain
Brand: Svet Črnil
Price: 1.50 EUR
Availability: InStock
Rating: 4,5 (59 reviews)

Question 1

Kaj je Arduino ?

Accepted Answer

Mnogi začetniki se bojijo, da je programiranje mikrokontrolerjev preveč zapleteno.Arduino je zasnovan prav za začetnike. Njegove razvojne plošče so enostavne za uporabo, saj imajo številne vnaprej pripravljene primere in knjižnice, ki poenostavijo proces učenja. Začetniški projekti, kot je utripanje LED diode ali uporaba gumbov, so jasni in enostavni za sledenje?Začetniki se pogosto počutijo preobremenjene, ko naletijo na težave, ker nimajo podpore.Arduino ima ogromno podporo mednarodne skupnosti. Obstaja na tisoče forumov, vadnic in spletnih tečajev, kjer lahko začetniki najdejo pomoč in odgovore na svoja vprašanja? Nakup opreme za učenje elektronike je lahko drag.Arduino plošče so cenovno dostopne, poleg tega pa so številni viri in knjižnice brezplačni. Za osnovne projekte potrebujete le osnovno ploščo, nekaj žic in nekaj komponent, kot so LED diode in gumbeNekateri začetniki dvomijo v uporabnost, če menijo, da so te naprave preveč omejene.Arduino je zelo vsestranski. Uporablja se lahko za širok spekter projektov, od preprostih domačih avtomatizacij do zapletenih robotskih sistemov. Njegova prilagodljivost omogoča uporabnikom, da rastejo in se razvijajo s projekti?

Question 2

Ali lahko z arduinom avtomatiziram proizvodnjo linijo?

Accepted Answer

Seveda lahko! Arduino je izjemno zmogljiva platforma, ki omogoča avtomatizacijo različnih procesov v proizvodnji. Naši strokovnjaki z dolgoletnimi izkušnjami na področju implementacije Arduino sistemov, avtomatizacije in robotizacije vam lahko pomagajo pri realizaciji vašega projekta.1. Dvomi o zmožnosti Arduina: - Argument: Arduino je dovolj zmogljiv za različne avtomatizacijske naloge. Uspešno smo avtomatizirali celotne proizvodne linije, vključno s kompleksnimi sistemi, kot so avtomatizacija polnjenja steklenic in krmiljenje.2. Strah pred tehnično zapletenostjo: - Argument: Vse, kar potrebujete, je nekdo z izkušnjami – in tukaj smo mi, da vam pomagamo! Naša ekipa ima bogate izkušnje z implementacijo Arduino rešitev in lahko poskrbimo za nemoten prehod iz prototipa v dejansko proizvodnjo?3. Zaskrbljenost glede zanesljivosti in varnosti: - Argument: Arduino sistemi se lahko uporabljajo za zanesljive in varne avtomatizacijske procese. Na primer, v avtomatizaciji upogibanja akrilnih linij smo uporabili Arduino za natančno upravljanje časa ogrevanja in hlajenja, kar preprečuje požare in poškodbe materialov?4. Vprašanja glede prilagodljivosti: - Argument: Arduino je zelo prilagodljiv in omogoča hitro prilagajanje sistemov glede na specifične potrebe proizvodne linije. Na primer, v avtomobilski industriji smo uporabili Arduino PLC za popolno avtomatizacijo proizvodne linije, kjer je bilo mogoče spremljati in upravljati vse procese preko Panel PC-ja ali celo mobilnih naprav?

Question 3

Arduino Nano, Mega or ESP32: Which plate to choose for the first student project?

Accepted Answer

For the first project, select the bar according to connections, power and connectivity. Classic Nano is convenient for a small task, Mega for several entrances and exits, and ESP32 for a networked project.What to check outFirst, write down a list of sensors, keys, screens, and exits. Determining each supply voltage, interface and necessary connections.Nano and Mega with AVR use a different architecture than ESP32. Check the compatibility of libraries and memory requirements, especially for graphics and larger data.In ESP32 consider 3,3-V logic. Power module with 5 V does not mean that its exit is allowed directly to GPIO.Connect only one sensor for the first test. Save working binding and program, then add features.A Practical ExampleFor table thermometer you can start with Nano, sensor and screen. If you want to display measurements on the local network, it is a practical ESP32. Mega is interesting when a simple task needs many connections.Common errorA larger panel or higher processor frequency does not solve wrong signal levels and incompatible libraries. For ESP32-C5, further check whether you need 5-GHz Wi-Fi; check the Bluetooth profile for sound.For further readingEspressif: selection of development panel ESP32 (english). Family Review ESP32 and panel selection criteria by project.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.Arduino nano clone with USB C connector CH340Mega 2560 REV3 development panel with USB cableESP32 38 pin WIFI IoT BluetoothESP32-S3 N16R8 WiFi development panel BT 8MB PSRAMESP32-C5 N16R8 development panel WiFi 6 2.4/5 GHz 16MB flash 8MB PSRAMESP32-C5 N32R8 development panel WiFi 6 2.4/5 GHz 32MB flash 8MB PSRAM

Question 4

Why doesn't the computer recognize Arduino Nano with the CH340 chip and how do I upload the first program?

Accepted Answer

First, make sure the computer detects the serial port. If the door isn't there, choosing a Bootloader in Arduino IDE won't solve the problem.What to check outUse verified data USB-cable and direct USB-computer connection. The charge cable can power the LED without transmitting data.In the device manager, monitor which device appears when fitted. Find the CH340 driver from the WCH manufacturer or as instructed by the panel supplier.For classic Nano with ATmega328P, select the appropriate panel, processor and COM-gate. If loading fails, check that execution requires ATmega328P (Old Bootloader).Close other programs using the same door. Complete the first test with a basic example and without an external circuit on RX/TX.A Practical ExampleIf COM-the door appears and disappears along with the tile USB-part at least partially detected. Then discuss the correct error message when loading instead of simultaneously changing driver, panel and entire application.Common errorDouble RESET pressure is not a general procedure for all Nano plates. Classic AVR Nano and newer Nano families have different methods of loading.For further readingArduino: choice of processor and bootloader for Nano (English). Explanation of options ATmega328P, Old Bootloader and ATmega168 in Arduino IDE.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.Arduino nano clone with USB C connector CH340Nano CH340 AtMega328 Development Panel

Question 5

Why can't I download the ESP32 and when do I use the BOOT and EN buttons?

Accepted Answer

The loading error may be due to cable, occupied door, inadequate power supply or wrong start-up mode. BOOT and EN only help with a properly bound plate.What to check outCheck the exact chip family, selected target in the development environment and COM-port. The ESP32-S3 programme is therefore not suitable for ESP32-C5.Disconnect external modules, especially from start-up connections, and close the serial monitor in other applications.If the automatic switch does not work, use the manufacturer's procedure: for many development panels hold BOOT, press EN/RESET briefly and then release BOOT to load.After successful download, press EN/RESET if necessary. If transfers are unstable, try lower speed and other short data cable.A Practical ExampleSeparate doors do not exist from failed to connect and errors while writing flash. The first shows a connection to the computer, the second often in a startup mode, and the third requires a review of the power supply and communication.Common errorStarting GPIO is not the same for all families ESP32. Do not download the pin numbers from the instructions for the second panel and do not change the security eHouse settings due to the usual loading problem.For further readingEspressif: Troubleshooting your application (English). Procedures for checking the connection, startup mode and errors when writing the program.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothESP32-S3 N16R8 WiFi development panel BT 8MB PSRAMESP32-C5 N16R8 development panel WiFi 6 2.4/5 GHz 16MB flash 8MB PSRAMESP32-C5 N32R8 development panel WiFi 6 2.4/5 GHz 32MB flash 8MB PSRAM

Question 6

Which GPIO-pins can I use on ESP32 for keys, sensors and relays?

Accepted Answer

Select GPIO from the scheme of your tiles, not just from the number you find in case of code. Some connectors have restrictions or already serve memory, USB-and start-up.What to check outCheck the full module and pinout plate label. ESP32, S3 and C5 do not have the same distribution.For conventional ESP32 check GPIO34-39 input connections: not suitable for output and do not have pull-up/pull-down internal resistance.Exclude connectors that your version uses for flash or PSRAM. Check the starter or strapping pines in particular.For relays use the appropriate module or driver. GPIO must not directly supply the coil; also check the output status during the reset.A Practical ExampleA key that holds the start-up connection in the wrong state when switched on can prevent the running of an otherwise correct program. Try starting with the unplugged key and then select a more suitable GPIO.Common errorTo ESP32 do not connect 5-V either 24-V signals directly. Connection designation on connector and GPIO number in code are not always the same thing.For further readingEspressif: starting connections and start-up mode ESP32 (English). Interpretation of strapping pines and signals that influence the launch of the classical ESP32.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothESP32-S3 N16R8 WiFi development panel BT 8MB PSRAMDouble 5V DC automatic relay with diode and optocopler

Question 7

What does ESP32-S3 mean by N16R8 and when does the project benefit from PSRAM?

Accepted Answer

For ESP32-S3 N16R8 storage mark, 16 MB flash and 8 MB PSRAM. Flash saves program and data even without power; PSRAM is an additional working memory.What to check outRate the size of the application, file system and expected updates. These are flash requests.Evaluate image buffers, screen buffers or capture data separately. Here, the PSRAM can be useful.Adjust flash, PSRAM and partition settings to the actual module and development environment.On startup, check the detected capacity and test the maximum expected memory consumption.A Practical ExampleTwo graphical buffers of 320 × 240 at 16 bits per pixel require a total of approximately 307 kB before adding any other data. Such a calculation helps to choose the panel.Common errorPSRAM does not replace all types of internal RAM-but it's not always the same speed. More flash also does not mean any more PSRAM or automatically larger program section.For further readingEspressif: use of external RAM in ESP32-S3 (English). PSRAM settings, uses and external memory limits.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32-S3 N16R8 WiFi development panel BT 8MB PSRAM

Question 8

Which ESP32 supports Wi-Fi 5 GHz and when is it making sense for ESP32-C5?

Accepted Answer

ESP32-C5 supports Wi-Fi in the 2,4 and 5 GHz bands. The original ESP32 and ESP32-S3 use 2,4-GHz Wi-Fi and therefore only the second program setting does not add 5 GHz support.What to check outCheck that the access point is connected to the relevant network and that the selected software version supports the required mode.Compare the link at the application site. More frequency space does not automatically mean better passage through walls.Select the C5 versions of N16R8 and N32R8 according to flash: 16 and 32 MB respectively. Both have 8 MB PSRAMs.Note the antenna area for your own casing. The metal cabinet can significantly change the wireless connection.A Practical ExampleFor a sensor device near a two-band access point, C5 is interesting if you want to try a less occupied 5-GHz connection. In the remote box, the decision should be based on signal measurement and offline.Common errorWi-Fi 6 is the name of the standard generation and 5 GHz is the frequency band. The Wi-Fi 6 panel is therefore not necessarily two lanes.For further readingEspressif: first steps with ESP32-C5 (English). Official guidance on the preparation of the development environment and first launch of the C5 project.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32-C5 N16R8 development panel WiFi 6 2.4/5 GHz 16MB flash 8MB PSRAMESP32-C5 N32R8 development panel WiFi 6 2.4/5 GHz 32MB flash 8MB PSRAMThe photograph shows the illustrious reference performance of Waveshara.

Question 9

Can I transfer the project with ESP32 or ESP32-S3 to ESP32-C5 without changing the circuit and program?

Accepted Answer

Transfer to ESP32-C5 require a review of the programme and the binding. The same family name does not provide the same GPIO, architecture, USB-functions or Bluetooth profiles.What to check outMake a copy of the working project and write down versions of libraries and tools.Select the ESP32-C5 target and translate the smallest example first. Then check libraries one by one.Compare the diagram of connections, start-ups, voltages and peripheral consumption. Also check the embedded memory.Repeat loading, restart tests, unplugged sensors, networks and possible OTA-updates.A Practical ExampleThe web thermometer can be downloaded through the sets: first the measurement, then the screen and at the end of the Wi-Fi. So quickly you discover which driver or connector requires change.Common errorESP32-C5 without Bluetooth Classic, therefore applications with A2DP/HFP you do not only tolerate with another translation objective. Support for peripheral functions is also checked for a concrete chip.For further readingEspressif: comparison of families and development panels ESP32 (English). Overview of differences between families, with links to data sheets of individual chips.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothESP32-S3 N16R8 WiFi development panel BT 8MB PSRAMESP32-C5 N16R8 development panel WiFi 6 2.4/5 GHz 16MB flash 8MB PSRAMESP32-C5 N32R8 development panel WiFi 6 2.4/5 GHz 32MB flash 8MB PSRAM

Question 10

Which ESP32 select for Bluetooth headset and which one for BLE-sensor?

Accepted Answer

For a normal headset with Bluetooth Classic A2DP or HFP profiles, the starting point is the original ESP32 with the corresponding software fund. ESP32-S3 and ESP32-C5 support BLE, which does not ensure compatibility with such a headset.What to check outIn the headset documentation, check the profile used, not just Bluetooth version numbers.Separate music from two-way conversation. You need the proper roles of devices, codec and sound path.For BLE-tip, check the services and characteristics of GATT and the role of the client or server.For a demanding project, first try the basic connection with the selected device and then add recording or Wi-Fi.A Practical ExampleThe temperature sensor, which according to BLE publishes the measurement, is a different task than connecting the phone and the headphones. The operation of one connection does not prove that the panel will perform the entire sound bridge.Common errorBluetooth 5 or BLE does not in itself constitute Bluetooth Classic support, LE Audio or a specific audio profile. Check the chip and the actual programming fund.For further readingEspressif: Bluetooth Classic and Bluetooth LE on ESP32 (English). Entry point to the official Bluetooth interface documentation and supported profiles.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothESP32-S3 N16R8 WiFi development panel BT 8MB PSRAMESP32-C5 N16R8 development panel WiFi 6 2.4/5 GHz 16MB flash 8MB PSRAMESP32-C5 N32R8 development panel WiFi 6 2.4/5 GHz 32MB flash 8MB PSRAM

Question 11

Why is ESP32 restarted when the relay, engine or Wi-Fi is switched on?

Accepted Answer

Reboot when switching on Wi-Fi or load often indicates a drop in voltage or disturbance. First read the cause reset and check the power supply before changing the software logic.What to check outTest the panel without the relay and engine and with the verified power supply and short cable.Observe the tension on the panel during the event. A short drop can be overlooked by the usual multimeter; for such a case is a useful oscilloscope.Lead the flow of the engine and relay along the appropriate supply line. Check common signal reference and reverse currents.Use the prescribed protection and driver for the inductive load. Select the capacitor and its layout according to the circuit.A Practical ExampleIf the ESP32 resets only at engine start, separate the power supply test from the control signal test. Also monitor the heating of the converter and connections.Common errorSwitching off the brownout protection masks the symptom. The rated power of the power supply does not yet prove a good response to current shocks or a small drop on the cable.For further readingEspressif: power and communication diagnostics ESP32 (English). Instructions for finding causes of unstable operation, problems with power supply and connection.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothESP32-S3 N16R8 WiFi development panel BT 8MB PSRAMMini360 DC-DC voltage converter downDouble 5V DC automatic relay with diode and optocoplerMOSFET Module 15A 400W PWM DC 5V-36V Strength Arduino Module

Question 12

How do I make a local web interface to the ESP32 that works even without the Internet?

Accepted Answer

The ESP32 local web interface can operate without Internet: the panel creates an access point or connects to an existing local network in which you open its address.What to check outSelect AP-the means of direct connection; or STA-mode of connection via router.First display a simple page by measuring. Write down the address of the device on the serial monitor or on the screen.Protect access using a password, and check the allowed values and user rights in commands.Determine the behaviour on disconnection and restart. Control should not depend on whether the user has an open browser.A Practical ExampleOn your phone you connect to the tile network and open its local IP. The phone can warn you that there is no Internet; this does not mean that the local side is not working.Common errorLocal server is not automatically accessible from the public Internet. For remote access you need a specially designed and protected solution.For further readingEspressif: Wi-Fi API and access point mode (english). Examples and settings for connection to the network and for your own access point ESP32.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothESP32-S3 N16R8 WiFi development panel BT 8MB PSRAMESP32-C5 N16R8 development panel WiFi 6 2.4/5 GHz 16MB flash 8MB PSRAMESP32-C5 N32R8 development panel WiFi 6 2.4/5 GHz 32MB flash 8MB PSRAM

Question 13

How do I add ESP32 with W5500 and when is it better than Wi-Fi?

Accepted Answer

W5500 adds Ethernet via SPI. It is useful where you can power the cable and want to reduce dependence on the radio environment; it does not in itself transform ESP32 into industrial PLC.What to check outCheck the power supply and pinout of the concrete Ethernet module. Use the correct SPI, CS and if necessary RESET/INT connections.Select the driver that supports W5500 and your ESP32 family. Start the basic network test.Edit a single MAC, DHCP or static IP, mask and transition. In Modbus TCP also check device roles and registering map.Try the unplugged cable, reconnect the switch and reconnect. Mark outdated measurements as invalid.A Practical ExampleThe measuring device transmits data to the computer via Ethernet and the local measurement runs independently of the online display. If the connection is lost, the status is clearly displayed.Common errorThe speed of 100 Mbs on Ethernet does not mean that your application will reach the same flow after SPI. Ethernet is also not an automatic deterministic connection for safety control.For further readingWIZnet: W5500, data sheet and usage examples (English). Official description of Ethernet controller, SPI documentation and connection to software resources.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.W5500 Ethernet network module TCP / IP 51 / STM32ESP32 38 pin WIFI IoT BluetoothESP32-S3 N16R8 WiFi development panel BT 8MB PSRAM

Question 14

For measuring distance: ultrasonic sensor or ToF VL53L0X/VL6180X?

Accepted Answer

It measures the ultrasonic sensor with sound reflection and the ToF with light. Select by destination, distance, environment and the required response and measurement check with actual objects.What to check outSpecify minimum and maximum distance, target size and permissible measurement error.For ultrasound, consider as soft materials, dead area and influence of surrounding surfaces.For VL53L0X or VL6180X, check measurement mode, environmental light, cap glass and calibration.Check the electrical output of the breakout module. The voltage of the power supply and the signal level are not necessarily identical.A Practical ExampleFor the robot prepare a test of white wall, dark surface and narrow object at an angle. Note also invalid measurements, not just average distances.Common errorThe maximum range specified in the specification is not guaranteed precision at each target. Do not replace two different ToF modules without reviewing the programme and measuring range.For further readingSTMcroelectronics: ToF-sensor VL53L0X (English). Data sheet, software support and technical resources for VL53L0X distance sensor.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.Ultrasonic range measurement sensor UR-20Laser TOF module VL53L0X for measuring distances I2C 5vTOF laser sensor VL6180X I2C detects assholes and distances

Question 15

How do I make touch keys with MPR121 and when do I use a classic keyboard?

Accepted Answer

MPR121 allows capacitive detection of up to 12 electrodes through I2C. It is suitable for non-conductive panel keys, but requires sensitivity testing in the final casing.What to check outStart with one electrode and a verified case. Edit Power, I2C-addresses and signal levels of the module.Electrodes and connections should be appropriate shapes and lengths. Also test the influence of the nearby mass and power supply.Set the touch threshold, release threshold and filter by documentation, not just after one successful touch.Test wet fingers, gloves and disturbances when conditions of use are provided.A Practical ExampleFor the student control panel use three electrodes for menu, confirmation and return. If you need clear mechanical feedback, a simple 4 × 4 keyboard may be more appropriate.Common errorCapacitive keys are not automatically suitable for machine safety off. The humidity and geometry of the housing can change the response and the test on the table alone is not enough.For further readingAdafruit: Touch Key Guide with MPR121 (English). Practical example of binding, electrodes and software applications. Compare connectors with your implementation of the module.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.Touch detection module MPR121 I2C for Arduino esp32, etcKeyboard module 4x4 16 keys for Arduino 16bitESP32 38 pin WIFI IoT Bluetooth

Question 16

Wi-Fi, LoRa or nRF24L01: how do I connect remote sensors?

Accepted Answer

Wi-Fi is practical with the existing network, LoRa for small amounts of data and different radio design, and nRF24L01 for its own connection between compatible nodes. No choice guarantees universal reach.What to check outEvaluate message size and frequency, power supply and delay allowed.Separate radio modulation of the LoRa from the LoRawan network. The LoRa module is not automatically connected to LoRaWAN or the Internet.Check frequency execution, antenna, transmit power and applicable country-of-use rules.Include serial numbers, measurement validity time and loss of connection detection. Test the actual course.A Practical ExampleA remote sensor that sends a few bytes per minute has different needs than a camera. For the sensor in the building, Wi-Fi can be the simplest if the connection at the location works reliably.Common errorThe codes 868 and 915 MHz are not automatically interchangeable. Even the stronger antenna does not solve the wrong frequency plan or unauthorised setting.For further readingSemtech: basic radio technology LoRa (English). Interpretation of LoRa technology as a starting point for further planning of remote sensors.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothLORA32 Development Panel 868/915Mhz ESP32 with OLED displayModule for wireless data transmission 2.4GHz GT-24 NRF24L01

Question 17

Can I run a NEMA 17 with DRV8871 or need a track engine driver?

Accepted Answer

DRV8871 contains one H-bridge and is intended primarily for brush control DC-engines. One such module is not a direct replacement for a driver of a normal two-phase bipolar step motor.What to check outFirst determine the engine type, winding connection, rated current and steering mode.For a bipolar step engine you need proper control of both phases; usually you choose a dedicated stepwise driver.For DC-engine, check start-up or congestion current and electrical and thermal limits of module DRV8871.Do not conclude from the word engine in the catalogue that all drivers are interchangeable.A Practical ExampleFor small drive DC-the tape is DRV8871 may be the candidate after the current check. To accurately move the axis with the bipolar NEMA 17 check the appropriate driver as correctly selected TMC2208.Common errorOne H-bridge can steer one winding, which does not yet represent the entire two-phase controller. The trade name does not replace the block scheme of the chip.For further readingTexas Instruments: DRV8871 driver (English). Data sheet and description of the driver for the brush one-way motor.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.Module H bridge for corner motors DRV8871 Cora engine NEMA 17 17HS8401 48mm 52NcmDriver for corner motors TCM2208 with refrigerator

Question 18

How do I compose a temperature recorder with ESP32, INOX-son, OLED-screen and SD-card?

Accepted Answer

Set the recorder by sets: first the NTC measurement, then the OLED display and finally the SD record. Check each set independently before adding a network.What to check outSelect a NTC with a known characteristic and assemble the appropriate ADC divider for the selected panels.Connect OLED via its supported interface and voltage. Check the I2C address and the free connections.SD-connect module to correct SPI-pinoutu. Check logical levels, power supply and write stability.Record in CSV the time, temperature and measurement status. Do not store the fictitious temperature if the sensor is defective.A Practical ExampleFor independent control of the environment of the refrigerator, use a well installed probe and your own low voltage recorder. This is a different task than interfering with the original fridge controller.Common errorBefore longer operation check power failure, full card, sensor disconnect and meaning of time tags. The description is a project plan; the concrete panel requires a certified pinout, configuration and a verified program.For further readingEspressif: writing to SD-sPI card (english). Documentation for the part of the recorder that provides the connection to SD-card.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothInox probe NTC sensor for a temperature of 10K 0,5m cableMini OLED screen for Arduino 128x64 pixlov 0.96in i2C BlueModule for reading SD cards for Arduino Raspberry SPIESP32-C5 N16R8 development panel WiFi 6 2.4/5 GHz 16MB flash 8MB PSRAMESP32-C5 N32R8 development panel WiFi 6 2.4/5 GHz 32MB flash 8MB PSRAM

Question 19

How do I make a product counter on a mini-track with ESP32 and optical sensor?

Accepted Answer

For the counter you need a sensor that reliably separates the product from the background, an appropriate input interface and a program that counts transition events. Long-term active signal must not be considered as multiple products.What to check outSelect the sensor according to the material, colour, translucency, distance and speed of the objects.Check output type such as NPN, PNP or digital 3,3 V. Industrial 24-V do not connect signal directly to ESP32.The program should detect the selected edge and filter the interferences if necessary, still separating the shortest expected product spacing.Test slow, fast, tightly consecutive and stopped objects and restart power.A Practical ExampleIf the object stops in front of the sensor, the counter must remain at one event. The next product can only be recognized by the appropriate relaxation and new transition.Common errorThe student counter is not an automatic machine security system. The control of dangerous movement and safety functions require appropriate design independently of the display of the number of products.For further readingEspressif: GPIO and addressing digital inputs (English). Reference for configuration of inputs and interruptions in sensor detection events.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.ESP32 38 pin WIFI IoT BluetoothCX-424 Industrial automation sensor for product detection4-kanalni GPIO Logical Level Converter 3.3V/5V/12V/24VMini OLED screen for Arduino 128x64 pixlov 0.96in i2C Blue

Question 20

Which sensors do I choose for the student robot: distance, inclination, orientation and position of the axis?

Accepted Answer

Distance, inclination, orientation and as axes are different measurements. Select the appropriate sensor for each sensor and check how to use the data in robot control.What to check outCheck the ToF-sensor for distance, its field of vision, target area and the effect of ambient light.Accelerator and gyroscope enable the assessment of movement and inclination; MPU6050 alone does not have a magnetometer for the absolute direction.For sensor fusion modules, check the reference system, calibration and magnetic interference.The magnetic encoder, such as AS5600, is interesting for the angle of the axis with a properly selected and installed magnet.A Practical ExampleThe robot can use ToF to check the obstacle, IMU to monitor the inclination and encoder the position of the mechanism. None of these measurements alone provide the exact location of the entire robot in the space.Common errorDo not combine data from different coordinate systems without conversion. A magnet with an engine or steel structure can affect magnetic measurements.For further readingSTMcroelectronics: VL53L0X sensor documentation (English). Example of official specifications and software resources to measure the distance on the robot.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.Laser TOF module VL53L0X for measuring distances I2C 5vGyroscope modules MPU-6050 for Arduino I2C 5VIMU BNO055 9-DOF absolute orientation sensorBNO086 Qwiic IMU breakout module for VR and robotics 3 axesAS5600 Magnetic Encoder Cotter 12bit I2C ModuleESP32 38 pin WIFI IoT Bluetooth

Question 21

How do I choose components for graduation or DIY-project not to buy incompatible modules?

Accepted Answer

Make a list of links and requests before ordering. The most complications are avoided by checking voltages, interfaces, connections, libraries and mechanical dimensions.What to check outFor each module write the power supply, consumption, signal voltage and I2C, SPI, UART or other connection.Place connectors on the plate and check the special boot functions. In I2C check the addresses, in SPI choice of individual devices.Check the support of the concrete processor and versions of the development environment. ESP32, S3 and C5 are not a single fixed platform.Add power, connecting cables, connectors, attachments and necessary protective circuits. Make time to test each set.A Practical ExampleFor a temperature project, the list includes not only ESP32 and NTC, but also the appropriate resistance, connections, power supply, data display(s) and method of installation of the probe.Common errorUpon request, send accurate tags, photo of connections, voltage and project goal. Thus, compatibility can be verified on the basis of data; the price and stock shall be verified with the actual product.For further readingEspressif: how to choose a development panel (English). Selection criteria and links to data sheets to verify project requirements.Compatibility check productsSelect products according to the above criteria; the list is not a confirmation that they are all interchangeable.Arduino nano clone with USB C connector CH340ESP32 38 pin WIFI IoT Bluetooth4-kanalni GPIO Logical Level Converter 3.3V/5V/12V/24VMini360 DC-DC voltage converter downDevelopment and programming for industrial pond automationESP32-C5 N16R8 development panel WiFi 6 2.4/5 GHz 16MB flash 8MB PSRAMESP32-C5 N32R8 development panel WiFi 6 2.4/5 GHz 32MB flash 8MB PSRAM

Question 22

Kakšna je razlika med originalno in obnovljeno kartušo ali tonerjem?

Accepted Answer

Za naše stranke je pomembno vedeti razlike med originalnimi in obnovljenimi kartušami, saj te razlike vplivajo na stroške, ekološki odtis in kakovost tiskanja.1. Razlike v pakiranju:Originalne kartuše prihajajo v privlačnih embalažah, vendar mi verjamemo v praktičnost in ekološko odgovornost. Naše kartuše so pogosto pakirane v recikliranih plastičnih posodah, saj želimo zmanjšati odpadke. To pomeni, da boste kartušo morda prejeli v embalaži od skute, vendar nič zato – vse se lahko ponovno uporabi.2. Količina črnila ali tonerja:Pri masovni proizvodnji originalnih kartuš se pogosto zgodi, da so kartuše napolnjene manj kot bi morale biti. Pri nas se to ne dogaja – kartuše napolnimo maksimalno, včasih še več. Uporabljamo napredno vakumsko komoro za črnilo in vibracijsko tehnologijo za toner, kar zagotavlja najboljšo napolnjenost.3. Čipi:Redko menjamo čipe, razen kadar je to nujno potrebno za delovanje. Večina čipov služi le za prikaz nivoja barve, kar ne predstavlja velike vrednosti za stranko, a močno poveča ceno izdelka. Če želite funkcijo čipov, jih lahko dokupite posebej.4. Cena:Naše kartuše so več kot 70% cenejše od originalnih. To pomeni, da lahko znatno prihranite, ne da bi pri tem žrtvovali kakovost.5. Ekološki vidik:Vse naše kartuše so proizvedene lokalno v Ljubljani, kar pomeni manjši ekološki odtis. Originalne kartuše so večinoma proizvedene v Aziji in prepotujejo dolge razdalje, kar negativno vpliva na okolje.Podprite lokalno in delujte globalno z našimi trajnostnimi kartušami!

Question 23

Kje lahko prevzamem ?

Accepted Answer

Če se sprašujete, kje lahko prevzamete svoje naročilo, imamo odlično novico za vas! Naša trgovina se nahaja na naslovu Rakuševa ulica 8, Ljubljana, kjer lahko prevzamete vse izdelke in izkoristite večino naših storitev. Lokacija je enostavno dostopna, saj smo v bližini McDonaldsa in Hoodburgerja, kar vam omogoča, da se med potjo še okrepčate.Zavedamo se, da so časovne omejitve pogosto vir stresa, zato smo pripravili rešitev tudi za tiste, ki ne morete priti v okviru našega delovnega časa. Paketnik je vaša elegantna rešitev! Tukaj lahko preprosto pustite svoje prazne kartuše ali tiskalnike, ki potrebujejo servis, in ko so popravljeni, jih lahko tam tudi prevzamete. Ko bo vaše naročilo obdelano, vas bomo nemudoma obvestili.Da bi vam še dodatno olajšali postopek, priporočamo, da v paketniku pustite kontaktne podatke, kot je vaš email ali telefonska številka, da vas lahko pokličemo. Plačilo je povsem enostavno – povezavo za plačilo vam bomo poslali prek SMS-a, vi pa jo lahko opravite s kartico. Vaše naročilo običajno obdelamo še isti dan ali najkasneje naslednji delovni dan.Za več informacij o našem delovnem času obiščite Kontakt

Question 24

Ali je mogoče prevzeti naročeno izven delovnega časa ?

Accepted Answer

Ali je mogoče prevzeti naročeno izven delovnega časa?Seveda, popolnoma razumemo, kako neprijetno je, ko vaši dnevi postajajo vse bolj natrpani in iskanje prostega časa med delovnimi urami je pogosto izziv. Zato smo ustvarili rešitev, ki vam omogoča, da prevzamete svoje naročene artikle kadar koli želite – brezplačno in brez stresa. Naš paketnik, ki se nahaja desno od vhoda v trgovino, je na voljo 24/7. Tako lahko prevzamete svoje naročilo ob katerem koli času, ko vam najbolj ustreza, ne da bi vas omejeval urnik trgovine.Kako deluje? Zelo preprosto – samo oddajte naročilo pred 12. uro, in ko izbirate način dostave, označite prevzem v paketniku. Vaše naročilo bo pripravljeno isti dan, in kadarkoli boste želeli, boste lahko opravili prevzem – bodisi zgodaj zjutraj bodisi pozno ponoči. Nič več čakanja ali prilagajanja prostemu času med delovnim urnikom trgovine.Veliko naših strank že koristi to možnost, saj jim omogoča fleksibilnost in prihranek časa. V situacijah, ko se vam mudi ali enostavno želite izogniti čakanju v vrsti, je prevzem v paketniku popolna rešitev. Predstavljajte si, da si lahko naročilo prevzamete na poti domov po napornem dnevu ali pa celo med vikendom, ko imate več časa.Zakaj izbrati prevzem v paketniku?Brezplačno – nobenih dodatnih stroškov za to storitev.Dostopno 24/7 – popolna fleksibilnost, prilagojena vašemu urniku.Enostavno in hitro – brez čakanja v vrstah ali iskanja prostega časa.Varen prevzem – vaši artikli bodo varno shranjeni v paketniku do vašega prihoda.Ne pustite, da vas čas omejuje – izberite prevzem v paketniku in uživajte v svobodi. Naročite še danes in bodite brez skrbi, saj boste vedno imeli dostop do svojih naročil, kadar koli vam ustreza. Ali ste že preizkusili naš paketnik?

Question 25

Ali lahko s prodajo vaših izdelkov tudi jaz kaj zaslužim?

Accepted Answer

Heres the SEO-optimized response and keywords for your target audience considering a reselling opportunity with your products:---Ali lahko s prodajo vaših izdelkov tudi jaz kaj zaslužim?Seveda! Če imate podjetniško žilico in vas zanima dodatni zaslužek, potem je prodaja naših izdelkov prava priložnost za vas. Z vsakim novim kupcem, ki ga pridobite, si lahko zagotovite nagrado od 5% do kar 35% vrednosti naročila – vse je odvisno od vrste in količine izdelkov, ki jih prodajate naprej.Pri nas ni nujno, da imate registrirano podjetje ali samostojno dejavnost – skupaj bomo našli rešitev, ki vam bo omogočila preprost začetek. Lahko začnete s priporočilom naših inkov brez siloksanov ali celo s pridobitvijo naše refill station Urh, s katero boste lažje ponudili storitev polnjenja kartuš svojim strankam.Ne odlašajte! Z investicijo v kakovostne izdelke in malo podjetniškega duha lahko ustvarite dodatni zaslužek, ob tem pa tudi pomagate strankam do izdelkov, ki so ekonomsko in okolju prijazni. Vsak korak, ki ga naredite, vas bliža finančni svobodi in uspehu.---Meta opis za SEO: Pridružite se naši prodajni mreži in zaslužite do 35%! Za začetek ne potrebujete podjetja – podpiramo vas na poti do uspeha in dodatnega zaslužka.

Question 26

Kaj naj uporabim namesto Anydesk ali Teamviewer?

Accepted Answer

Brezplačna alternativa AnyDesk in TeamViewer: Spoznajte RustDesk V zadnjem času so priljubljene platforme za oddaljeni dostop, kot sta AnyDesk in TeamViewer, začele uvajati vse več omejitev za brezplačno uporabo svojih storitev. To je povzročilo frustracije med uporabniki, ki se zanašajo na te rešitve za oddaljeno pomoč in sodelovanje. Naraščajoči stroški in omejitve funkcionalnosti so mnoge prisilili v iskanje alternativ, ki so cenovno dostopne, zanesljive in enostavne za uporabo. RustDesk: Odprtokodna rešitev za oddaljeno namizje Ena izmed najbolj obetavnih odprtokodnih alternativ je RustDesk. Gre za brezplačno platformo za oddaljeno namizje, ki ponuja popoln nadzor nad vašimi podatki in omogoča enostavno povezovanje z drugimi napravami. RustDesk je na voljo za različne operacijske sisteme, vključno z Windows, macOS, Linux, Android in iOS, kar zagotavlja široko združljivost. Ključne prednosti RustDesk Popoln nadzor nad podatki: Ker je odprtokodna rešitev, lahko RustDesk gostite na lastnih strežnikih, kar zagotavlja večjo varnost in zasebnost. Enostavna namestitev in uporaba: Postopek namestitve je preprost. Prenesite program z uradne spletne strani, ga zaženite in prejeli boste dostopno kodo ter geslo, ki ju delite z osebo, ki ji želite omogočiti dostop do vašega računalnika. Brezplačna uporaba brez omejitev: Za razliko od nekaterih komercialnih rešitev RustDesk ne uvaja omejitev za brezplačne uporabnike, kar omogoča neprekinjeno uporabo brez nepričakovanih prekinitev. Kako začeti z RustDesk Prenos: Obiščite uradno spletno stran RustDesk in prenesite ustrezno različico za vaš operacijski sistem. Namestitev: Po prenosu zaženite namestitveni program in sledite navodilom na zaslonu. Povezovanje: Ob prvem zagonu vam bo RustDesk dodelil edinstveno dostopno kodo in geslo. Te podatke posredujte osebi, ki ji želite omogočiti oddaljen dostop do vašega računalnika. Z RustDesk lahko uživate v svobodi in fleksibilnosti, ki ju ponuja odprtokodna platforma za oddaljeno namizje, brez skrbi glede skritih stroškov ali omejitev. Njegova enostavna uporaba in zanesljivost sta že prepričali številne uporabnike po vsem svetu.

Question 27

Ali ste pooblaščeni servis za katerokoli znamko?

Accepted Answer

Ali ste pooblaščeni servis za katerokoli znamko? Ne, nismo pooblaščeni servis, kar ima tako prednosti kot slabosti. A zakaj bi to sploh lahko bila prednost za vas? Prednosti neodvisnega servisa Fleksibilnost pri popravilih: Kot neodvisni servis nismo omejeni s smernicami proizvajalca, kar pomeni, da lahko najdemo najboljšo rešitev za vašo napravo. Nižji stroški: Pooblaščeni servisi pogosto zaračunavajo višje cene zaradi uporabe izključno originalnih delov in strogega postopka popravila. Hitrejša izvedba: Ker nismo omejeni na določene dobavitelje, lahko hitreje pridobimo dele in opravimo popravila. Prilagoditev specifičnim potrebam: Ponujamo rešitve, ki so prilagojene vašim zahtevam in niso vezane na standardizirane smernice proizvajalca. Slabosti, ki jih je treba upoštevati Garancijska vprašanja: Če je naprava še v garanciji, se lahko popravilo pri neodvisnem servisu smatra kot kršitev pogojev garancije. Originalni deli: Pooblaščeni servisi uporabljajo zgolj originalne dele, medtem ko mi ponujamo tudi kakovostne nadomestne rešitve. Zakaj izbrati nas? Naša ekipa ima več kot 20 let izkušenj s popravilom raznolikih naprav. Pri nas ne gre le za hitro in cenovno ugodno storitev, temveč tudi za prilagojen pristop. Veliko strank nas izbere, ker jim omogočimo prilagodljive rešitve, ki jih pooblaščeni servisi pogosto ne nudijo. Primer iz prakse Ena naših strank je želela hitro popravilo tiskalnika, ki je bil ključnega pomena za njihovo poslovanje. Pooblaščeni servis bi potreboval več tednov za dobavo specifičnega dela, mi pa smo uporabili prilagodljivo rešitev in težavo odpravili v treh dneh. Stranka je bila več kot zadovoljna! Zaključek Če potrebujete hitro, prilagodljivo in cenovno ugodno popravilo, smo mi prava izbira. Kaj je za vas pomembnejše – strogo sledenje proizvajalčevim smernicam ali rešitve, ki so narejene za vas?

Question 28

Kaj vse počnemo v Svetu Črnil

Accepted Answer

Vse, kar počnemo v Svetu Črnil – inovacije za tiskanje in avtomatizacijo V podjetju Svet črnil se že od leta 2004 osredotočamo na inovativne rešitve na področju tiskanja in industrijske avtomatizacije. Naša široka paleta storitev in izdelkov je zasnovana tako, da odgovarja na specifične potrebe naših strank, pri čemer se osredotočamo na reševanje ključnih izzivov, s katerimi se soočajo v svojih panogah. 1. Visoki stroški tiskanja in vzdrževanja tiskalnikov Podjetja in posamezniki se pogosto soočajo z visokimi stroški tiskanja ter vzdrževanja tiskalnikov. Naša zgodba se je začela leta 2004 s servisom kartuš in tonerjev, kar smo kmalu nadgradili s servisiranjem tiskalnikov. Leta 2010 smo kot prvi v Sloveniji uvedli predelavo tiskalnikov z vgradnjo CISS sistemov, ki omogočajo cenejše tiskanje brez uporabe dragih kartuš. S tem smo strankam omogočili znatne prihranke pri stroških tiskanja. 2. Potreba po prilagodljivem in stroškovno učinkovitem tiskanju etiket Podjetja, ki se ukvarjajo s pakiranjem, pogosto potrebujejo prilagodljive in stroškovno učinkovite rešitve za tiskanje etiket v manjših serijah. Razvili smo namenski tiskalnik etiket iz role na rolo, ki deluje brez kartuš in omogoča skoraj brezplačno tiskanje. Ta tiskalnik je idealen za podjetja z velikim številom različnih dizajnov etiket, saj omogoča tiskanje majhnih serij po potrebi. 3. Učinkovito etiketiranje izdelkov z ravnimi površinami Ročno lepljenje etiket na izdelke z ravnimi površinami je lahko zamudno in nepraktično. Zato smo razvili avtomatsko etiketirko, ki omogoča hitro in natančno lepljenje etiket na ravne površine. Ta rešitev je še posebej koristna za podjetja, ki želijo povečati učinkovitost in doslednost v procesu etiketiranja. 4. Potreba po natančni in kakovostni obdelavi kovin Industrije, ki zahtevajo natančno in kakovostno obdelavo kovin, se pogosto soočajo z izzivi pri varjenju različnih vrst kovin. Leta 2015 smo začeli z obdelavo kovin in varjenjem vseh vrst kovin s pomočjo laserja. Lasersko varjenje je idealno za materiale, kot so jeklo, inox, zlato, srebro, titan in aluminij, saj ne povzroča pregrevanja in omogoča avtogeno varjenje, kar zagotavlja najmočnejši možen var. 5. Iskanje zanesljivih partnerjev za industrijsko avtomatizacijo in robotizacijo Podjetja, ki želijo izboljšati svojo proizvodno učinkovitost, pogosto iščejo zanesljive partnerje za industrijsko avtomatizacijo in robotizacijo. S svojo dolgoletno prisotnostjo v industriji in lastnimi raziskovalno-razvojnimi zmogljivostmi smo zanesljiv partner za podjetja, ki želijo optimizirati svoje procese in povečati produktivnost. Zaključek V Svetu črnil se zavedamo izzivov, s katerimi se soočajo naša stranke, in ponujamo prilagojene rešitve, ki temeljijo na inovacijah, kakovosti in učinkovitosti. Naša zgodovina in izkušnje so zagotovilo, da lahko odgovorimo na vaše specifične potrebe in vam pomagamo doseči vaše poslovne cilje.

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