Bluetooth recorder with ESP32 and SD card

Video with Andreshtjan · Slovenian and English versions

Small flash drive, big memory

This time Andrejštajn presents the development concept of a compact Bluetooth recorder. The base consists of two ESP32, dedicated software, removable SD card, battery and USB charging. In the animated story, the phone and the phone connect through the recorder and the agreed conversation is stored on the card.

From Storage to Listening

I'll make an appointment with the interlocutor before the recording. The indication shows when the recording takes place. To listen, I remove the card and insert it into the computer reader, where I find an important moment of the recording. Video completes the transformation to Sherlock Holmesstein.

Development requires more than connection modules

The display is a development presentation. Actual compatibility depends on phone, headphones, Bluetooth profiles and software. Successful sound playback does not in itself confirm a two-way speech bridge or reliable recording.

When selecting a development panel, I check support for the required profile and sound paths. Different Families ESP32 are not automatically interchangeable. Therefore, an overview of power supply and signal levels and the FAQ on the difference between Bluetooth headset and BLE sensor is connected below.

Custom Development

I present the solution for the arranged recording and arranged local storage of images. The related development panel is the building block of the project; it is not already a built-in recorder. For a concrete project at the Council of Blacks first determine compatibility, mode of management, housing and performance check.

Social media publications

• YouTube – Slovenian
• YouTube – English
• TickTok – Slovenian
• Instagram – Slovenian
• Instagram – English
• Facebook – Slovenian
• TickTock – English

Related products and services

• ESP32 38 pin WIFI IoT Bluetooth

Related documentation

• Arduino and ESP32: overview of power supply, signal levels and module connections

Frequently Asked Questions

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

An animated presentation is prepared with the help of artificial intelligence. Check the detailed instructions and conditions with related documentation and concrete equipment.