How to use a wired button?

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I use a rpi with a arduino. All works fine. Now I want to connect my doorbell to the rpi. The idea is to sent a signal to my mobile (pushover) so I hear the doorbell, even if I’m in the garden.

So. I wanted to connect the wires of the button to the rpi. I use GND and GPIO 18. In the config.json I actived the plugin GPIO.
In the section Devices I added the following lines:
{
“id”: “contact-sensor”,
“class”: “GpioContact”,
“name”: “contact detector”,
“gpio”: 18
},
Unfortunalty this will not work. I’ve connect it with the GPIO of the rpi. Then I connected the wires to the Arduino, and used the configuration below:
{
“id”: “omeduino-contact-sensor”,
“name”: “ContactSensor”,
“class”: “HomeduinoContactSensor”,
“pin”: 9,
“interval”: 1000,
“inverted”: true
}
Can anyone help me?
Gr.
Frank

This works for me. http://cdn.instructables.com/FFQ/2V85/HI3TYHX6/FFQ2V85HI3TYHX6.LARGE.jpg

@p4co86 Thanks for your comment. I assume the orginal doorbell stays intact, and you only get a signal that the doorbell was pressed.
What did you adjust in config.json?

Just a contact, wehen button is pressed the status is closed.

@p4co86 Hi, that sounds interesting to me . Can I use the same scheme for pin 9 ? Or with any name I can pin A0 responsive config in ?

What i can say is that it works with an analog pin.

@p4co86 w
which entry you have in the config for analog pin A0 ?

just count your gpios, for arduino nano it should be 14 see here:
https://github.com/pimatic/pimatic-homeduino

AnalogSensor example: “…Pin numbering starts at 14 (A0) for the first analog pin.”

for an mega it should be 54

when your last Dig. pin is 20 then A0 should start at 21.

@p4co86 I think I understand . Pin D13 is the last Dig.Pin - A0 the first analog - so 14 on Arduino Nano.
Thank you

@p4co86
Is it meaby possible that u need to use a diode also when u use a button with 4 pins?

Totally depends on the button. Without specifying it its not possible to answer your question… but most buttons i know don’t need a diode and two pins are connected with each other.

This is 3 Years old, i think he solved his problem

@michael-rudek
I hope so 2 but now i got a similair situation…
i bought these https://www.banggood.com/100pcs-Mini-Micro-Momentary-Tactile-Tact-Switch-Push-Button-DIP-P4-Normally-Open-p-917570.html?rmmds=myorder
but only when i apply Multimeter (react as diode), between 2 (+), 4 (-) and from my Arduino NANO- 1 (D8), 3 (GND) wil the button react.

Sorry, i don´t understand your last sentence.

There is no diode in this kind of switches, but there are always 2 pins connected to each other.