Annoyed by the unnecessary bulk of existing solutions, [cperiod] has come up with an ESP8266 temperature and humidity sensor that can plug directly into a standard USB port.

Currently [Josef] has an SHT21 humidity/temperature sensor and a BH1750 light sensor slotted into the headers on the top side of the device, but they could just as easily be swapped out with ...

I have been playing around with ESP8266 WEMOS D1 / D2 mini wifi board with DHT11 / DS18B20 / SPL06-007 sensors all sourced from jaycar. Primarily as inside / outside temperature information displayed ...