Temperature Module v2.0 (external programmer)

===BOARD UNDER DEVELOPMENT===

This is a simple board driven by an ESP32-Wroom microcontroler for temperature monitoring with up to two DS18B20 temperature sensors (one SMD, one external sensor).

The ESP32 can connect to WiFi, read the temperature and send it via MQTT to the designated broker.

There are three LEDs available. One is the Power-LED. The other two LEDs (WIFI and MQTT) can be used for debugging.

You can program the ESP32 via external USB-to-Serial Adapter (like this one, please remember to set the adapter to 3V3 and NOT 5V). Just connect the jumper wires at the board, plug the Adapter into your computer and upload your sketch. 

The well known buttons for resetting the controller and switching to bootmode are also available.

Kind regards,

Dennis

===BOARD UNDER DEVELOPMENT===

===DESIGN IMPROVED 27th Feb 2023===

REVISION: 2.0

Design improved with correct basic components, fuse and 100uF tank capacitor. Layout improved to reduce EMI.

Design improved by: markus_jidoka (Markus Virtanen)

===DESIGN IMPROVED 27th Feb 2023===