Hey all. Not strictly blynk related, but I am using a Sonoff with custom firmware to talk to MQTT and I am controlling the whole thing via Blynk.
I want to use the Sonoff to operate my garage door. My problem is that the garage door (an ancient Bosch model) takes 220VAC to operate, then has a control line with a button switch that runs at ~50VAC. Click the switch, the door opens.
Theoretically, I would like to use the Sonoff to switch the control line, but I am running into a snag, as the Sonoff requires 90-240VAC to operate. I tried connecting it to that 50VAC line, but it appears the voltage is not high enough to power it.
What I COULD do is take a line from the 220VAC input, use a voltage regulator to output something like 5VDC and connect that to the Sonoff internal VCC pins (I’ve soldered a header).
Would that work? Powering the Sonoff via a DC source, then switching the 50VAC with the main circuit?
This is what I would suggest.
Another option is to just create your own circuit from an ESP8266, Relay and a tiny bit of code.
Then you could just use your Sonoff for somthing else that doesn’t require any modification (since its such a nice package as it is).