how can i tell if device is rated for 5v or 3.3v ?
i sent an email to the seller about 2 weeks ago...
Your motor uses hall effect sensors to detect speed and direction of rotation, so this article may be of some help: https://www.electronics-tutorials.ws/electromagnetism/hall-effect.html. The data sheet DVDdoug provides (well done!) indicates that you can connect the sensors to any 3.3v - 5v supply without worry. Using 5v may offer you a little more noise margin over the 3.3V, and that might matter.Curious: do your sensors generate pulses of 5v or 3.3v depending on the supply voltage you use?Looks like a nice motor!
I do not see any data on this.Quite expensive.You may have to experiment to see if it works at the voltage you want to use.
4) I'm not sure why you need R1 and R3. Why not just ground those two pins on the ATMega if they need to be held low? Otherwise, looks good to me, and as the old saying goes, if it works, don't fix it!
Thank you very much sir. This project is a Bionic upper hand. It has 5 fingers but the thumb also does adduction and abduction and therefore it needs two motors. So in total we have 6 motors and 6 encoders.