These are the 2 amp power packs that we built There are 6 of them.
These are the receivers that convert the commands from the hand held throttles to the power pacts.
This is one of the hand held Infrared throttles we built. The top 2 buttons are direction of travel. Next button is fast ( or go ) The red button is a fast step break , the one above it is a slow step break
The throttles are returned to a holder that also serves as a charger No more batteries to change!