Questions about ESP8266 16-way relay board using 2x 74HC595 controllers

Hello friends . I have questions about the project. Does this circuit control the relays when there is no internet ? So for offline ?

No, the only interface for controlling the relays in the example code I created are the Blynk widget buttons. When the device is offline then these won’t work.

Because there are limited available pins that aren’t used then you have very few options for what you can do offline using physical buttons.


Pete, I want to contact you via WhatsApp. My Number: [phone number redacted by moderator]

No thanks. Contact me by posting here.


I decided to do this circuit. I hope I can succeed. Yes, let’s continue from here. Let’s see if it will operate devices from a long distance.

Which option should we choose ?

I’ve moved your questions to a new topic, as I don’t want them cluttering-up the original topic.

Your question is answered in my original tutorial…