Easy build self balancing electric skateboard

Step 36 Anti-tamper power cutoff key

One last thing. At recent maker faire I left my monowheel on a table while I went for a look around.

When I came back there was a small child playing at one end of the table while ??his father was flicking the on/off switch and pressing every button on the hand controller trying to make it "go" - while it was tilted to one side.

Luckily for him the batteries were flat and it wasn't working properly.

If he had been successful, this heavyweight hunk of metal would have thought it was tipping hard over and would have hurled itself at the child with the full 500W motor power. No doubt I would have been blamed.

If you plan to take your creation anywhere public like an exhibition, and leave it for any period of time, I suggest you fit some sort of disabling device like an ignition switch and high current relay (from car spares shop) perhaps, or easiest would be one of these which is a race/rally car emergency battery cut off switch with a key you can remove and carry with you. It will easily handle the high current and adds very little weight.

Comments

[EmmettO]

 This is a brilliant point.