have a prosthetic arm and have been prototyping a 3d printed arm. I was looking around at options for making my own myoelectric arm as the cost starts around $10,000 from my prosthesis. I found out about your product line and am heavily intrigued. My questions were 1: the disposable surface electrodes, are they disposable because they loose the stickiness? Or do they loose the electronic sensing over time? If so is there another option I can use that’s compatible with the muscle sensor that would be long term? Loosing stickiness doesn’t bother me as I’d probably cover them with a thin film anyways. Sticky wouldn’t help in a prosthetic, in fact it’s hinder the function. 2: does the power shield work while charging? I was hoping to build a usb power bank into my arm to power the devices instead of having to charge multiple things, they all stay plugged into the bank and I can have the bank easily accessable to charge.
Thanks
You can use a LiPo battery + a proven charger/boost board that explicitly documents “power while charging” (Adafruit PowerBoost/PowerShield is one example), and size the battery and boost current for worst-case draw. Put a thermal sensor or current fuse in the battery compartment and design the 3D printed cavity to prevent direct skin contact with hot surfaces. Test behaviour while charging at your expected load to confirm the charger doesn’t throttle or become unstable. You can also explore this EMG third arm prosthetic arm project.