Electromagnet tool

Þórarinn showed me how to make an electromagnet, so that Baksi the robot arm can pick up small metal things:

Þórarinn got a choke coil from the electronics inventory, tried a few different voltage and current combinations, and voilá! We can lift a small ball bearing! The choke coil drew 0.63A at 1V.

Then we tried soldering three choke coils together to see if the holding strength would increase:

It did, you can't shake the ball off! But now the current requirements might be too high for a USB port-powered robot.

Note

The electromagnet tool is on hold.