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Topic: Have to push reset after powering UNO up to get program to run... (Read 480 times) previous topic - next topic

5errated

Jun 30, 2012, 06:53 am Last Edit: Jun 30, 2012, 06:58 am by 5errated Reason: 1
What am I missing here?  Every time I power the arduino up, it just sits there and I have to manually push the reset button to get my sketch to run.

I tried adding a 10k resistor between RX and ground, and that doesn't work.

5errated

Ok for grins, I moved the resistor to between ground and the reset pin and it starts the sketch upon powering up now.  Weird.

Is this an OK fix for a permanent project, or will this have bad side effects?

Nick Gammon

There is a resistor between reset and +5V, so you have slightly diminished its affect. Possibly it was resetting too quickly.
Please post technical questions on the forum, not by personal message. Thanks!

More info:
http://www.gammon.com.au/electronics

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