Ball wheel (big and small) and voltage converter holder
thingiverse
- Ball wheel as an alternative to the metal one. Print at the highest quality of the printer. The ball is sitcked to the case at the botton. You need to drill a small hole from the other side to free it. If it cannot move, drill a small hole on the ball and a small screwdriver to force it move. Sand the ball and use a lighter to polish the surface to reduce friction. - Small ball wheel: In case the big ones do not roll well, a small one might help. - Voltage converter as an alternative to diodes: https://www.banggood.com/5V-3A-UBEC-Support-2-6S-Lipo-Battery-Fully-Shielded-Anti-interference-Voltage-Stabilizer-p-1033112.html
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