That is all still true, but what [Larry Bank] discovered is a way to get multiple OLED displays working with considerably fewer microcontroller pins than usually needed. While bit-banging I2C to ...

Normally, you wouldn’t be able to do that without extra parts, but on the ESP32, [BastelBaus] has found a nice hack — just connect your devices to different pins and slightly abuse the ESP32 ...

If you want to maintain detailed logs of the environmental parameters, you can host a database on your Raspberry Pi and connect it to the ESP32 over the MQTT protocol. Considering ...