Posted in how-to, Microcontrollers Tagged diy, IoT, mqtt, node-red, temperature sensor, Wemos d1 ← Ice Fishing Tent Makes Winter Ham Radio Comfy Retro Breadboard Gives Up Its 1960s Secrets → ...

Well, [ashafq] did the latter. The result is a delightfully nerdy fan controller powered by an ATTiny85 and governed by a DS18B20 temperature sensor.