Longboard

A custom electric longboard!

This was my first proper CAD project, and I learned a ton while working on it: about motors, transmissions, machining, as well as basic firmware development.

longboard_photo

Features:

Design was done in Autodesk Inventor (mechanical) and Altium Designer (PCBs).


Battery Management

bms model bms photo

A custom battery management system was designed to handle safety, charging, and cell balancing. It’s built around an LTC6803 battery monitor IC and an STM32F303 microcontroller.

Features:


Remote

A custom wireless remote charges over USB, and contains a 900mAh lithium battery for a ~36hr runtime per charge.

The electronics are built around an ATmega32u4 MCU and an nRF24L01+ 2.4Ghz wireless transciever IC.

remote


Misc. Mechanical

ABS + Delrin drive pulleys:

longboard_photo

Motor mount fixturing, machining:

motor mount machining fixturing motor mount machining done