Sync button in app with relay status

[Gunner]

Aside from the Lambda shortcut, this is all very standard Blynk control stuff… All officially documented and covered zillions of times in this forum… So I admit I do find it concerning that it was so hard for you to understand, despite your stats showing you have put in 9 hours of reading over 1000 posts

Oh well, hope it works for you this time

[Bjerknez]

You do not need to concern about me. I’m a grown man.

Sometimes we need a last bit of a puzzle to understand a bigger one. But do not worry. I always get it to work some how. If i do not get help here, i get it other places

[daveblynk]

@Bjerknez

I also want to understand it, not just use it, if you understand?

I understand, but I have found out blindly using it for a bit in different sketches I begin to slowly understand it.

[Bjerknez]

Maybe you are a lot smarter than me then. Or have more time to spend regards to coding. I do not have much time to code because i have several other projects going.

Or is it a competition?

[daveblynk]

[Bjerknez]

One last question before i test the code later today:

If i use the code over and loose the Wifi. Will the relay shut of the Coffee maker?

[Gunner]

@Bjerknez

You do not need to concern about me. I’m a grown man.

I don’t

@Bjerknez

I always get it to work some how. If i do not get help here, i get it other places

Then we are wasting our time trying to help.

@Bjerknez

If i use the code over and loose the Wifi. Will the relay shut of the Coffee maker?

Yes, No, Maybe… depends on your understanding, wiring, final code and why/how it lost connection… as already tried to explain above, loss of connection without proper failsafe code and wiring (which you don’t seem to have) can lock the whole process in the middle of some unwanted (and unknown) state

I wouldn’t trust your code for anything critical, but you are you and it is not my burnt coffee or house

[Bjerknez]

Well… it was you that sayed it…

With answers like that, i think you waste you’r own time.

You’r answer is almost like reading the coffee makers manual. It says that by no means that the cover to the heating element must be taken off because of som mambo jambo about fire hazard etc. So my house is probably allready in big risk.

Now i really feel what it is to be a real man.

[Bjerknez]

@Gunner

BLYNK_WRITE(V1) {  // Blynk Button set to switch mode
if param.asInt()   {  // If 1 or HIGH, proceed with commands
    digitalWrite(coffeemaker, LOW);  // Or 0, Turn relay ON (or use HIGH/1 if relay uses active high logic)
    timer.setTimeout(600000, coffeeOFF)  // Execute this function after 10mins
}

void coffeeOFF() {
digitalWrite(coffeemaker, HIGH);  // Or 1, Turn relay OFF (or use LOW/0 if relay uses active high logic)
Blynk.virtualWrite(V1, LOW);   // Or 0... Turns the button OFF on the app
}

That code actually worked after i corrected some small errors. Thanks .

[Gunner]

@Bjerknez

That code actually worked after i corrected some small errors

Of course it would… it is one of the most basic of Blynk & timer functions. And is essentially the answer @daveblynk gave you in the very 2nd (and 29th) post of this arduis topic. He deserves the thanks.

Any errors come from my quickly typing it out in the forum instead of in the IDE… I now see at least one missing } … That’s OK, it gave you some troubleshooting practice

[Bjerknez]

Okay. You can give the gold medal to who you want. The most important for me is that i got it to work.

I know it was a simple solution and i mentioned it in my first post. But sometimes i get stucked with the most simple codes.

Thanks anyway.

[Gunner]

@daveblynk

[Gunner]

@Bjerknez

But sometimes i get stucked with the most simple codes.

Don’t we all at some time… but it was your insistent red herring of a need to see the status changes even when there is no connection (PS, not possible) that just confused matters.

Marking this topic solved and moving on with life

[Robg3987]

GTT, daveblynk, and PeteKnight you all deserve the award for patience and perseverance.
Your dedication to provide meaningful help and education on this forum is outstanding.
Reading this topic was, for me, akin to watching a train wreck. I couldn’t help but keep reading on and on even though I wasn’t directly involved or experiencing the problem, just trying to learn from the experts.
Kudo’s to you all for continually offering assistance in the face of obstructions and objections.

cheers
Rob

[PeteKnight]

A friend of mine has a saying “You can lead a horse to water, but you cant stop it pi**ing in it”

That saying has come to mind several times with this topic!

Pete.

[Bjerknez]

Nice. With statements like that i just feel i’m not welcome.

[PeteKnight]

@Bjerknez

Or is it a competition?

@Bjerknez

Now i really feel what it is to be a real man.

@Bjerknez

Okay. You can give the gold medal to who you want.

When people go out of their way to offer advice an assistance, and in return they get comments like the ones above, it tends to be a bit of a turn-off.
A more gracious/humble approach would have turned this topic from the…

@Robg3987

train wreck

into a much less adversarial, and much more productive (for you) dialogue.

My take on this is that you’ve become frustrated and just can’t help taking this frustration out on those who are trying to assist you, hence the use of my friend’s proverb.

Pete.

[Gunner]

FYI, my new, and overkill , example of App and Physical Button Syncing

C++ Blynk (Legacy) - Code Examples for Basic Tasks

#29 - (Triple ) Synced Virtual and Physical Buttons using ESP32 hardware Interrupts It has been awhile since I added to this topic… but here is my take on a common (at time of this posting) issue… synchronising Virtual and Physical buttons. I chose to make this example work with or without Server connection, and the Physical GPIO states take priority on the reconnection (EG The App is set based on the hardware). I also used three separate Virtual/Physical switch sets, just …

Now I can hook up three coffee makers for maximum burnage

[Toro_Blanco]

I’ve always just used the example on the sketch builder.

https://examples.blynk.cc/?board=ESP8266&shield=ESP8266%20WiFi&example=More%2FSync%2FSyncPhysicalButton

Although, the addition of the re-connection routine is an upgrade I usually add.

[Gunner]

@Toro_Blanco

I’ve always just used the example on the sketch builder.

Same here, as in my Sonoff example. Seems to have some instability (button bounce) but I eventually fixed that with proper debouncing code (but haven’t updated my example yet).

This time I wanted to play with multiple switches and hardware interrupts, which I have never actually used before as well as make it fully functional without App, the code more “modular” for expansion and well commented for newer users to follow through.