Potentiometer throttle to use with servo tester.
I designed this throttle for my custom Ebike, I'm using helicopter ESC (speed controller) and I needed some easy way to control it. It will work with any Car, boat, plane ESC.
Easy way to control brushless motor is to connect its 3 signal wires to servo tester.
Just remove potentiometer from servo tester and attach new one (20kpot) with extension cable.
GT2 180 belt
2x M3x35mm screw
4x mini M3 bearings
1x 688ZZ bearing
Cheap servo tester :
You need to glue potentiometer to potentiometer pulley, I used gorilla glue.
When assembling: first mount belt on the pulleys, after that install bearings.
Make sure you leave little bit of slack on potentiometer, when you release springs they may damage potentiometer if spring hit its limit too hard, just leave a bit of turn left when spring is fully compressed.
Then all you have to do is to calibrate throttle range on u your ESC.