5V/12V Optical Speed Sensor

by fugalster.
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2 layer board of 1.00x0.80 inches (25.43x20.32 mm).
Shared on November 20th, 2013 05:06.

Uses an Optek reflective sensor to detect light/dark transitions, presumably stripes on a wheel. Output is filtered through a schmitt trigger. Supply it with voltage as indicated and get TTL compatible output.

Where a value contains a “/” the number preceding the “/” is to be used when powered with 5V and the number following the “/” is to be used when powered with 12V.

Output current should be kept less than 35mA with 5V supply or 10mA with 12V supply. In either case the output voltage will remain within TTL standards (2.8V – 5V for HIGH condition).

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