Guru
Joined: 17/10/2017
Location: BelgiumPosts: 469
| Posted: 12:37pm 26 May 2021 |
It was late yesterday so was not thinking straight... I killed a few nano's, but reburning the bootloader and reloading the firmware solved the problem.
Something to do with my self-made power supply (Chinese buck inverters) and buck regulators on the board. Replacing by the normal 7812 types solved that problem.
I think there are spikes during the connecting/disconnecting of the power to the board, this is messing up the uC.
I will just remove the nano first and will hook up the sense transformer to the 230VAC. Then I just measure the output on the nano input and trim it to 2.75V.
Edited 2021-05-26 22:38 by nickskethisniks