How can I detect a falling edge on the User button (=user button was pressed)? I tried writing a function that compares the payload of the input with the previous state and then incrementing a count tag, which is then send to the User LED output. Didn't work.

Then I just tried analyzing the output of the user button fct. Didn't work either. The user LED should either change color with every push of the button or switch off and stay off (when count >3)

var count = context.get('count')||0;

If (msg.payload===0)
{
count = count + 1;
context.set('count',count);
}
msg.payload = count;

return msg;

 Do you have any hints for me?

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Split from Access input pins, user button and multi-colour user LED from node-red.

JDarius

How can I detect a falling edge on the User button (=user button was pressed)? I tried writing a function that compares the payload of the input with the previous state and then incrementing a count tag, which is then send to the User LED output. Didn't work.

Then I just tried analyzing the output of the user button fct. Didn't work either. The user LED should either change color with every push of the button or switch off and stay off (when count >3)

var count = context.get('count')||0;

If (msg.payload===0)
{
count = count + 1;
context.set('count',count);
}
msg.payload = count;

return msg;

 Do you have any hints for me?

------------------------------------------------------------------------------------------
Split from Access input pins, user button and multi-colour user LED from node-red.

 Hi,

your code works perfectly for me. 
With every USER Button press the colour changes and stays off after three.
(In Node-red I have the following schematic: IOT2000 Digital Input -> function -> IOT2000 USER LED

Did you set your UpdateInterval for the UserButton to a short duration, e.g. 1ms?

Edit: And of course your "If" has to be in small letters.