I'm looking for a way to communicate from the removable handgrip of a drill to its base.
At first, I wanted to use the RFID technology but I figured that the distance from the grip to the base is about 60 centimeters and the RFID can communicated at a short distance.
Then are there some ways (radio, bluetooth...) to communicated that far but with a tag or a sensor tiny enough to fit in a handgrip?