This is measuring the temperature inside my son's fish tank. This is much better than the temp strip on the side of the tank.
Test feed running on a Wemos D1 mini (esp8266 variant) with a DHT22 for room temp/humidity data and a DS18b20 for the tank temperature. PWM control of tank lighting is handled locally. Light levels may follow at some point.
Simple Arduino project to monitor the temperature of my 180G tank. Components: - DS18B20 sensor - ESP8266