First at all, thanks for publishing your research about this board.
I tested the simple-relay.yaml but it did not worked with my board.
Then I re-read your blog, and compared the yaml in the post with the simple-relay.yaml in github. I noticed in your blog baud_rate was 115200. When I changed it in simple-relay.yaml and uploaded the binary, all the relays clicked!
I do not know if my board is a different batch, but on/off is reversed.
First at all, thanks for publishing your research about this board.
I tested the simple-relay.yaml but it did not worked with my board.
Then I re-read your blog, and compared the yaml in the post with the simple-relay.yaml in github. I noticed in your blog baud_rate was 115200. When I changed it in simple-relay.yaml and uploaded the binary, all the relays clicked!
I do not know if my board is a different batch, but on/off is reversed.