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How to build a robot 9 - 10/14/2012
connecting the i2c serial LCD, HC-SR04 ultrasonic sensor, and an LED - Todays 'How to Build a Robot' video is pretty simple.  I'm simply hooking up the i2c serial 16X2 LCD, multiple HC-SR04 ultrasonic sensors (four), and a power indicator LED. The power indicator LED is real easy.  I just hook it up to the breadboard power rails across a 100 ohm resistor and I'm done.  The power rail on the breadboard won't get power until the red switch is hit, so this works

How to build a robot 9



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