Measure Room Temperature and External Temperature and Room Door

BMP085 Pressure+Temperature and HTU21D Humidity and Temperature sensor readings with ESP8862

Freezer-to-Frigidaire, ESP8266 powered freezer cell periodically shut down to stay within typical refrigerator temperature range (e.g. 2 to 5°C) A DHT22 inside the freezer is polled and a 5V relay and a cascaded BIG 220v SSR are switched accordingly.

Temperatuur in Maasbree

Room temperature, relative humidity and Barometric pressure test using an ESP8266 with DHT11 and a BMP180.

ESP-01 DHT11 Temperature, Humidity, LED Light and ESP-01 Free Heap Monitor.

Testing data from DHT22 and esp8266 wifi module.

This channel is a on to try things out - and leave the primary channel alone.