The motor control boards would need voltage level shifters to work with it?
That is a cool find! No mention of wifi which is too bad, but it has an SD card slot. @madgrizzle is right that the controller board would need a redesign.
The TLE is supposed to be 3v compatible
This also means a Pi Zero W is on the same logic level, got you Wifi & bluetooth .
What about the encoders? Do they need level shifting?
VCC min 4.5V if it’s this one https://www.alibaba.com/product-detail/-Magnetic-Encoders-ME-28-3ppr_356414409.html
That’s what I like about the Teensy 3.5 boards… it’s 3.3V but can tolerate 5V on the digital inputs. Unfortunately, it won’t mate up to an existing shield without an adapter board and I can’t find one that’s commercially available.
Both in my junk drawer -
or q voltage divider with resisters
Do we need 2 way shifting or one way?
I think that will depend on if the pins on that board are 5v safe