Simple relay (node.js + Raspberry Pi)

Need Help With My Project
1

Hi, Could anyone check what’s wrong with this code ?

[CODE]var BlynkLib = require(‘blynk-library’);

var blynk = new BlynkLib.Blynk(’***’);

var Gpio = require(‘onoff’).Gpio,
relay = new Gpio(21, ‘out’);

var button = new blynk.VirtualPin(1);

button.on(‘write’, function(param) {
console.log(‘V1:’, param);
relay.writeSync(param.toString());
});
[/CODE]
I know this isn’t necessary as the pin works out of the box , but I wanted to do more with the button press.

2

Bump
Can anyone help me please…

3

Well, it is hard to answer without understanding what is wrong. It is not compiled? Write function not invoked? Relay doesn’t get anything?

4

Sorry for that , didn’t realize I didn’t state the problem in the post.
Yes , the write function is not invoked,
however if I put the write function outside button.on it works.

5

Could you please post those code that works? (function outside button.on)

6

I mean if I don’t put write in the function the relay works properly.

relay.writeSync(1)