Heartbeat LED

[J. Mark Wolf]

I like to use a different approach.

I have a one-shot connected to a flashing LED. If the one-shot is allowed to expire the led will flash. If your software "tickles" the one-shot every pass through the main loop, the one-shot remains re-triggered, and the LED remains off.

This way your LED flashes only if your program stops working.

[ecoli-557]

That approach is interesting, and it would solve the internal issues of just blindly working at the code level.

I could use a comparitor to check for the voltage level, and use it with the one-shot for a 'fault' indication as well.......

Thanks for the info. This shows me there really are many different ways to skin a heartbeat <grin>.