Electric bike project

last updated: August 1, 2014


Design goals

The display

The display shows the following information

There are a variety of other values available to be displayed, but they're not that important and there's only so much room on the LCD.

Here's the source code (Aug. 1, 2014)

The parts


24V, 1200 RPM, DC, brushed, 4"D, 6"L, very heavy. I'd like to get a better one.

Motor controller

From Ridemore

The sprockets

There is a 9 tooth sprocket on the motor and 32 on the wheel.


3 5 amp-hour Lithium polymer packs from Hobby King in China. They are 3 cell, 20C. Total voltage ranges from 37.8V to 27V.

The cost

the rest of the parts I had lying around