I'm designing a keyboard with the Proton-C and I'm not sure about using decoupling capacitors - how to connect them.
It has 3 GND pins, 1 VCC/3.3V pin and 1 VBUS (5V_RAW) pin (if I'm looking at it correctly.) Do I use 2 decoupling capacitors, one connecting VBUS to GND and the other VCC to GND and then if something needs to be connected to GND/VCC/VBUS I connect it through those capacitors? I'm pretty confused to be honest.