Why arduino due requires a external hard reset to start when supplied with external power source

Official Hardware Mega Due
1

I started using arduino due controller for months but i never used it on external power supply until now. the issue is Arduino due requiring external hard reset when it is powered using external power supply to start running the code.

2

I do not know of any processors that do not require a reset. That is generally generated with a capacitor and resistor. The docs state: " * Reset Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields which block the one on the board." That indicates to me that the capacitor and resistor needed for reset are on the board but something has gone wrong, probably the capacitor of something leaking into the reset line.

3

Because the reset circuit is not very well designed.

Its a well known issue.

Try a Google search on;

'Arduino DUE power on reset'

or

'Why arduino due requires a external hard reset to start when supplied with external power source'

4

Found a great article regarding this issue
so if anyone having the same issue, go through the below article
https://copperhilltech.com/blog/arduino-due-design-flaw-due-wont-start-after-poweroffon-requires-reset/

5

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.