Central Heating Controller made with Blynk

Projects made with Blynk
1

Not so much a project write up more a screenshot of the ‘final’ App for our Central Heating Controllers. Fairly self explanatory but please let us know if you have any questions.

Android iOS App.png1231×1082 117 KB

Very impressed with the Blynk system and look forward to hearing more about the costs in due course. With phones and tablets costing less than $50 these days it will be difficult for us to add $20 or $30 for lifetime access to Blynk for each end user of our product.

2 Likes
2

May I ask how you interface with your heating system? I know of OpenTherm, is that what you use?

3

Nano clones with RF transmitters (and receivers for learner feature) to RF controlled central heating switches.

4

Ah ok, that’s more basic, and probably stable, than I imagined. I was thinking of interfacing with an OpenTherm system, but I still have to buy one, lol.

5

Our systems are like Google’s Nest and British Gas’ Hive systems but without the $3.2bn price tag :smile:

6

Hi Costas,
Could you please send me your code for increasing or decrasing a value with buttons?

7

@misadeks I’m glad you asked that question, it gives me the opportunity to show the latest screenshot with the new Blynk buttons.

The CHARioT latest Android Screenshot.png720×1280 96.7 KB

The promo app for our device is now on Google Play at https://play.google.com/store/apps/details?id=thechariot.co.uk
If you use iOS the ipa file is available on our server at https://thechariot.co.uk/apps/thechariot.co.uk.ipa

Ok the code snippet:

BLYNK_WRITE(V1) // reads STEP on V1 slider pin, range 1 to 60 minutes
{
  STEP = param.asInt();
  delay(50); // try to stop flood errors with Blynk server when sliding the server
}

void plustime() {

  if (Mode < 3){
    if ((CountdownTime + STEP) <= 1440) {  // 1440 is number of minutes in a day
      CountdownTime = CountdownTime + STEP;  // increase a counter
      Blynk.virtualWrite(V15, CountdownTime);
    }
    else {
      CountdownTime = 0; // reset minutes from 1440 to 0
      Blynk.virtualWrite(V15, CountdownTime);
    }
    displaylcd();  // function to display time on the LCD
  }
}

void minustime() { 
  if (Mode < 3){
    if ((CountdownTime - STEP) >= 0) {
      CountdownTime = CountdownTime - STEP;  // decrease a counter
      Blynk.virtualWrite(V15, CountdownTime);
    }
    else {
      CountdownTime = 1440; // reset minutes from 0 to 1440
      Blynk.virtualWrite(V15, CountdownTime);
    }
    displaylcd();  // function to display time on the LCD
  }
}

BLYNK_WRITE(V5) { // plus time
  int PlusBtn = param.asInt();
  if (PlusBtn == 1) {
    plustime();
  }
}

BLYNK_WRITE(V10) { // minus time
  int MinusBtn = param.asInt();
  if (MinusBtn == 1) {
    minustime();
  }
}

Please shout if it doesn’t make sense.

8

@Pavlo if you have an Android and iOS device can you please try the apps as there is something I would like to show you when you have them installed (Android app as a minimum).

9

Thank you very much for the code!

10

Of course I have them installed. Please let me know what you would like me to look at?

11

@Pavlo you have the CHARioT Android and iOS apps installed or you have Blynk apps installed?

12

Blynk of course ). Should I install CHARioT?

13

Please, Android and iOS if you can.

14

send the links please, I can’t find it

15

They are in post 7 of this thread.