I want to make pixy2 communicate to teensy 4.0 with SPI,
but I’ve just noticed that pixy2 works at 5v.
I made own PCB, and I was going to supply 3.3v to any devices , including pixy2.
Will it work successfully? Or, if it can’t go well, what should I do?
I’m very sorry for my poor English.
Hello,
Here is the schematic:
https://github.com/charmedlabs/pixy2/blob/master/documents/drawings/pixy2_schematic-2.2.pdf
You can probably run PIxy off of 3.3V if you know what you’re doing (bypassing the regulator, for example, which is probably a challenging soldering exercise). It looks like the only thing that uses 5V is the LED and the servo connector.
Hope this helps 
Edward
This comment is very helpful to me.
I’m going to use both pixy and teensy at 3.3V,
so may be I don’t need external regulator.
I really appreciate for your respond.