Which forum? electronic novice / Arduino connected devices.

Questions like
How do I build and connect an external pwm controller for 2A to my Arduino?
How do I connect multiple i2c devices to my Arduino?

What forum would be appropriate?

I'm sure these questions have been addressed mutiple times, but i would put both in General Electronics.

MAS3:
I'm sure these questions have been addressed mutiple times, but i would put both in General Electronics.

I will search that forum first and post if needed. Thanks.