This is the PCB portion of the temperature plotting iot project.
Project homepage: https://optisimon.com/esp8266/arduino/temperature/monitoring/2020/01/07/esp8266-temperature-plotting-iot/
Software portion: https://github.com/optisimon/esp8266_temperature_iot
Hardware portion: https://github.com/optisimon/esp8266_temperature_iot_PCB/