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trafficLight.v1 | PCB Design

trafficLight.v1
Version 1 - Last update: Oct 3, 2015

Expansion board to easily connect HC-SR04 UltraSonic Distance Sensor to the RaspberryPi. Based on the distance, Red, Yellow, or Green LED is lit. I used 200 ohm resistors for R0 and R1 in my prototype, however the guide i used directed to use 470 and 330.

Source: http://www.raspberrypi-spy.co.uk/2012/12/ultrasonic-distance-measurement-using-python-part-1/

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