PiFace input problem

[happyman]

Hi,

I'm using a PiFace board on my RaspberryPi3. It is working fine.
I use 4 outputs, 2 ON/OFF switches and 1 button. This works fine.

Today I wanted to add another input switch, but then something strange happens.
It is an normal ON/OFF Switch with 5mtr of coax cable.

When the contact is made, it is shown in domoticz.
When the contact is open (after it was made) the input in domoticz keeps switching on and off.
When I disconnect the cable it stops.....

The piface.conf file is build like this.

Code: Select all

piface.0.input.3.enabled=true
piface.0.input.3.pin_type=level
piface.0.input.3.count_enabled=false
piface.0.input.3.count_type=generic
piface.0.input.3.count_update_interval_sec=1

Anyone an Idea?

[happyman]

After lots of possible solutions I inserted a resistor in serie and the problem seems to be over.

[peterjoosen]

Hello,
Can you tell me what resistor(=??? Ohm) you used to solve the problem?

Best regards,
Peter

[Jan Jansen]

The contact must connect the input to the ground. The circuit must have as little resistance as possible.

[Jan Jansen]

I use:
piface.1.input.1.enabled=true
piface.1.input.1.pin_type=level
piface.1.input.1.count_enabled=false
piface.1.input.1.count_update_interval_sec=10

[happyman]

Hello,
Can you tell me what resistor(=??? Ohm) you used to solve the problem?

Best regards,
Peter

Hi,
I used a 4k7 resistor.