I’d like to clarrify a view points about the arduino pro mini.
- there are 4 GND pins. Should I be connecting ALL of them to ground? or just any one of them?
- ditto for VCC - there are 2 pins with the same name do they both need to be connected? (if they get used)
- Is the Vcc pin an input, output or both? I’ve got a 5v arduino pro mini, and I intend to power it from an existing 12v regulated source. The instructions indicate I can connect a 12volt (max) supply to ‘Raw’. I also have some low current 5v volt devices that need to be connected to the pro-mini, can I use the ‘Vcc’ pin on the board as an output to provide 5v for these devices? (this is what I do on my mega - it seems to work ok on that)
i have read the relevant page, but haven’t found it very clear.