nano hangs after short period

[René van den Broek]

I build a hexapod and it works as expected. But after a short period it stops and than I have to flash the software again to make it work again. I use Panasonic CGR18650CG 2250mAh battery. and a nano clone from china and the software version

#RV3r1c

Any ideas?

[vorpalrobotics]

If a simple reboot of the robot (power off, wait 10 seconds, power on) won't make it work, and the nano program is truly wiped out and has to be reflashed, then that sure sounds like a bad nano. Under normal circumstances nanos won't lose their program on a regular basis. Yes, a static discharge can cause that every now and then, but even that's not super common and it certainly wouldn't happen on every run.

We do get batches of nanos every now and then from our suppliers that have various issues and have to go through the return process. It's just something that happens if you buy inexpensive items from china. We test every nano before we ship it.

The battery could be an issue too, it might have a very aggressive protection circuit that cuts power as soon as more than a couple of motors power up. However, I've never seen that wipe out the program on the nano. If that was the only issue you'd be able to get it to work a few more seconds by just rebooting the power switch on the robot.

Ok I just looked up the battery and it is rated for 10 amps continuous discharge so it should be fine, the robot really doesn't draw much more than 3A and even that is only for short bursts.  However, if you bought them from someplace like Aliexpress it might be a counterfeit panasonic and then all bets are off.

[René van den Broek]

Thank you for your quick answer

Op zondag 24 september 2023 om 19:53:51 UTC+2 schreef vorpalrobotics:

[René van den Broek]

I can confirm that it was the nano causing the problems. I used another one from an other supplier and now it works fine. Thanks for the help

Op maandag 25 september 2023 om 00:10:46 UTC+2 schreef René van den Broek: