Just a braindump of old Arduino firmwares

• wemos-oled: Basic bootup and output on oled
• SBCRack: Rack controller for multiple devices, which also reads voltage and load and can switch on and off loads
• esp8266-dht11: Reads values from DHT11 sensors and publishes them with MQTT
• elegoo-plant-controller: Small PoC for switching pumps and logging events to a connected SD card
• led-strip: Firmware for led strips which support connections with REST api