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Step 2Bike cadence sensor
Google bike uses a cadence sensor from a bike computer to detect wheel rotations. Simple wired cadence sensors, like the ones used here, are typically reed switches embedded in plastic for protection. Attach the sensor to the back fork of the bike (this is important as the front tire doesn't rotate when the bike is in the stand) and install the supplied magnet on one of the spokes of the back wheel.
I had to splice the cable going from the sensor to the computer and install a 0.1" header to get access to the reed switch. The bike computer still works, but you may be able to avoid this depending on the type of bike computer or sensor that you buy. The cable contained two wires that act like a magnetically activated switch. When the sensor is near a magnet, the switch is closed.
I had to splice the cable going from the sensor to the computer and install a 0.1" header to get access to the reed switch. The bike computer still works, but you may be able to avoid this depending on the type of bike computer or sensor that you buy. The cable contained two wires that act like a magnetically activated switch. When the sensor is near a magnet, the switch is closed.
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