Microcontroller freezes randomly when switching on a relay (snubber inside)

[TomGeorge]

Hi,

@dlloyd

Oh well, here we go again providing free service to the developers of these modules who neglect providing proper (or any) documentation or schematics.

Can I requote that;

Oh well, here we go again providing free service to the elcheepo manufactures of these clones who neglect providing proper (or any) documentation or schematics.

Tom...