just a question>>> using a tablet to run gcodeprintr, but tablet charges battery through mini usb, … so basically my tablet runs out of battery …how can i charge my tablet battery while connected to the arduino?? thanks
You either need a tablet with a separate power cable, or an OTG-Y cable and a hacked kernel to allow charging and OTG at the same time. Check out Timur’s kernels hopefully there is one suitable for your tablet.