OpenSprinkler Forums Hardware Questions OpenSprinkler PCA9555 logic output setup (esp8266) Reply To: PCA9555 logic output setup (esp8266)



My relay board is active high
Thats why i would like to change the logic output, but on the code.

Good explanation, its a good detail that PCA9555 starts with high state when you power it on, but it last a fraction of a second when ESP8266 send a command. (this occour very fast and it doesnt have much impact).