Summary of Doorbell to Arduino ‘Interface’
This article describes building a simple and affordable doorbell to Arduino interface using a relay, allowing Arduino projects to be triggered by a doorbell or to function as a bell themselves. The project involves wiring a relay coil to the doorbell, adding a pull-up resistor, and connecting the relay terminals to control wires insulated with shrink tubing. The interface uses a luster terminal for easy connections and ensures durability by encasing the relay and cables in shrink tubing.
Parts used in the Doorbell to Arduino 'Interface':
- FTR F1CA012V Double Pole Single Throw Relay (or normally-open/change-over relay)
- 100k Ohm Resistor
- 3 port luster terminal
- Bell wire
- Control wire cable (~20cm)
- Shrink tubes
- Soldering tools
Hi Everybody
In my first Instructable I want to show you how to build an cheap and easy Doorbell to Arduino ‘Interface’ so you can let your Arduinoproject get triggered through it or simply use your Arduino as a bell.
Almost endless possibilities 😀
Step 1: What you need…
Here’s what you’ll need, its not that much…^^
First of all you need the ‘heart’ of the interface, the relay.
-My Doorbell has 12V DC so I used a FTR F1CA012V which is a ‘Double Pole Single Throw’-relay but you can use ‘Normally-open’ or ‘Change-over’-relays as well.
You also need:
1x 100k Ohm Resistor
1x small 3 port luster terminal
some bell wire
about 20cm control wire cable
shrink tubes to isolate the contacts and protect the ‘Interface’
soldering tools
Thats it!
Step 2: Lets build…
Ok, lets Build the Interface.
– solder the bell wire to the relay coil connections and isolate the contacts with shrink tube
– solder one single control wire (red) to the relay common terminal and isolate the contact with shrink tube
– prepare an other control wire (black), take the resistor and solder it to one end
– solder a third control wire (yellow) and the black wire with the pull up resistor to the relay ‘normally-open’ terminal, take some shrink tube and isolate the contact all over the resistor
– cut off a ~10-14cm long piece from the control wire cable isolation, pull your 3 control wires through it and insert them into the luster terminal
– at last do a big piece shrink tube and shrink in the whole relay with the cables to protect them from getting broken
For more detail: Doorbell to Arduino ‘Interface’
