LED Level indicator - 8 LEDs common cathode red
Product information:
LED Level indicator board with 8 red individually controllable LEDs.
Useful for making outputs visible or creating a level indicator.
Simply connect all the LED pins to your Arduino, Raspberry Pi, ESP or other microcontroller and turn them on and off.
This is the common cathode version, meaning all the negative terminals of the LEDs are connected together. This allows you to power the LEDs directly from your microcontroller.
So you direct them by making the pin high.
For an explanation of this, see:
https://makeabilitylab.github.io/physcomp/arduino/rgb-led.html
Voltage: 3,3V - 5V