Author Topic: $50 robot microcontroller  (Read 1793 times)

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Offline violinkidTopic starter

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$50 robot microcontroller
« on: August 19, 2009, 04:08:43 PM »
I finished soldering everything, I dont exactly get how you are suppose to test the circuit. I have a multimeter with the settings of 20mA, 200mA, and 10A. It seems i have to plug the red line into the 10A hole and turn the switch to the setting of 20mA and it reads .3 I dont get what this means, can anyone help me? Also, is the LED suppose to light up when you turn on both the batteries?(I'm using the 4AA batterie holder +9v)
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Offline sonictj

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Re: $50 robot microcontroller
« Reply #1 on: August 19, 2009, 07:06:33 PM »
Testing the circuit is done with a continuity test, or resistance test.  You should measure no continuity or infinite resistance between power and ground.  The led is attached to a digital pin of the microcontroller so it will only light if you program it to do so.
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