I have 2 major questions
As a former arduino Uno user, I'm not very comfortable in using 3.3v arduino compliant devices, specifically the Wemos d1 mini and nodemcu.
Almost all my modules are 5v compliant, so I realized that I could power then with usb 5v/3.3v (i guess it's the same)- I used the VV/5v usb passthrough from the wemos.
What I should have taken care of is the feedback from the modules to the nodemcu. I believe that max supported voltage is 3.6 v- I measured 5.5v (might I have fried something?
My relays didn't work well- while my arduino Uno is driving them perfectly in same configuration
- Is there a way to test the board?
Second question: 2)I found some AMS1117 modules for stepdown purposes. Do I need 1 voltage variator
per module (only feedback- source shall be 5v passthrough) or one is enough for say.. 3 modules with input mode?