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Topic: no restart after power down (Read 567 times) previous topic - next topic


I have a simple PIR application on an Arduino BT which sends a PIR high low signal via pin 4 to serial and an LED on pin 13 toggling when the PIR goes high low. The program uploads fine and then runs like a dream BUT if i then power down the arduino bt (e.g. to change batteries) and then restart it all goes silent - the power LED is on but the LED on pin 13 does not flash and no data through the serial port.

It feels like the program is not restarting when the arduino is powered up. Has anyone got any pointers - i am stumped.

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