D1_mini 4 channel relay hack

ESPHome
1

Neat little hack for a cheap 4 Chanel relay output with a d1_mini.

IMG_2095
IMG_20954032×2268 1.43 MB

IMG_2096
IMG_20964032×2268 1.27 MB

2

D3 and D4 aren’t great GPIO choices.

https://randomnerdtutorials.com/esp8266-pinout-reference-gpios/

Screenshot 2024-07-29 at 11-26-54 ESP8266 Pinout Reference Which GPIO pins should you use Random Nerd Tutorials
Screenshot 2024-07-29 at 11-26-54 ESP8266 Pinout Reference Which GPIO pins should you use Random Nerd Tutorials796×170 5.42 KB

Do you get the 4th relay activating when the ESP reboots?

3

Yea I do,

I just make sure that I use this relay for non important or critical tasks, for example im using it for my wall tablet charging, so its not critical if it activates.

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