With some stuff lying around I've build a simple matrix clock, showing time, date, temperature and humidity. Parts:
- Arduino Nano
- DS3231 Realtime-Clock
- AM2302 / DHT22 Temperature/Humidity Sensor
- Neopixel 32x8 RGB-LED Matrix
- A few 3D printed parts
The 5V Power Supply is connected to the Power-In of the LED Matrix. The Arduino and Sensors are powered over the 3-wire connector of the LED-Matrix. DIN of the LED-Matrix is wired to D6 The DHT/AM2302 is wired to D3
