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

Question

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 out

Select 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 Example

For 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 error

Before 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.