I need and idea for a very tiny receiver.
Max. board size: 6 mm x 12 mm
An antenna can extend a cm or two past the end of the board.
Max. component height: about 4 mm
Power supply: 1.5 volt
Output: Source or sink 140 ma peak to drive a small motor from 1.5V.
Range: 3 meters was requested, but I think 1 meter will be ok.
Ultrasound and IR don't seem to be good candidates for practical reasons, leaving RF. I think this is too small for a Bluetooth module.
This is a one-off for a magician, so the parts can be hand-selected. The transmitter can be anything as long as he can hide it in his clothing, so that's not the worry at the moment.
Anybody have any clever ideas?
Thank you in advance.
Max. board size: 6 mm x 12 mm
An antenna can extend a cm or two past the end of the board.
Max. component height: about 4 mm
Power supply: 1.5 volt
Output: Source or sink 140 ma peak to drive a small motor from 1.5V.
Range: 3 meters was requested, but I think 1 meter will be ok.
Ultrasound and IR don't seem to be good candidates for practical reasons, leaving RF. I think this is too small for a Bluetooth module.
This is a one-off for a magician, so the parts can be hand-selected. The transmitter can be anything as long as he can hide it in his clothing, so that's not the worry at the moment.
Anybody have any clever ideas?
Thank you in advance.