# Raspberry Pi (Garage Door opener) **URL:** \ **Category:** Raspberry Pi\ **Created:** [20 August 2021 01:19 UTC](https://forum.core-electronics.com.au/t/raspberry-pi-garage-door-opener/11100 "2021-08-20T01:19:08Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![J\_L25](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@J\_L25](https://forum.core-electronics.com.au/u/J_L25)\ **Post date:** [20 August 2021 01:19 UTC](https://forum.core-electronics.com.au/t/raspberry-pi-garage-door-opener/11100/1 "2021-08-20T01:19:10Z")
Hello, I am wanting to turn my BND CAD 4 garage door into a smart garage door opener, I am wanting to know what do I need to be able to achieve this I currently have a raspberry pi 3 Model B but what else do I mean Cheers ---
**Author:** ![Trent5487676](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/trent5487676/32/4583_2.png) [@Trent5487676](https://forum.core-electronics.com.au/u/Trent5487676)\ **Post date:** [20 August 2021 02:06 UTC](https://forum.core-electronics.com.au/t/raspberry-pi-garage-door-opener/11100/2 "2021-08-20T02:06:08Z")
Hello J L, Welcome to the forum 🙂 I assume that this was the datasheet for your particular model of garage door? > **[cad4-owners-manual.pdf](https://www.bnd.com.au/media/2034/cad4-owners-manual.pdf)** > > 839.39 KB How were you wanting to interface with the door? I can see your model has 433.92MHz remote control units, but since your Pi is wireless you could hardwire into the door and connect to the Pi remotely. ---
**Author:** ![J\_L25](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@J\_L25](https://forum.core-electronics.com.au/u/J_L25)\ **Post date:** [20 August 2021 02:46 UTC](https://forum.core-electronics.com.au/t/raspberry-pi-garage-door-opener/11100/3 "2021-08-20T02:46:51Z")
I was going to qire a relay into the back that connects to the raspberry pi, Is there an easier way or is this way fine ---
**Author:** ![Trent5487676](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/trent5487676/32/4583_2.png) [@Trent5487676](https://forum.core-electronics.com.au/u/Trent5487676)\ **Post date:** [20 August 2021 02:54 UTC](https://forum.core-electronics.com.au/t/raspberry-pi-garage-door-opener/11100/4 "2021-08-20T02:54:22Z")
A relay switched by the GPIO of the Pi and connected into the door opener’s switch would have been my approach to the problem. ---
**Author:** ![J\_L25](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@J\_L25](https://forum.core-electronics.com.au/u/J_L25)\ **Post date:** [20 August 2021 03:08 UTC](https://forum.core-electronics.com.au/t/raspberry-pi-garage-door-opener/11100/5 "2021-08-20T03:08:18Z")
Do you instructions on how? ---
**Author:** ![Trent5487676](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/trent5487676/32/4583_2.png) [@Trent5487676](https://forum.core-electronics.com.au/u/Trent5487676)\ **Post date:** [20 August 2021 03:11 UTC](https://forum.core-electronics.com.au/t/raspberry-pi-garage-door-opener/11100/6 "2021-08-20T03:11:51Z")
One of our staff members Tim did a great tutorial on using relays with the Raspberry Pi recently, I’ll link it below: > **[Controlling a Solenoid with Raspberry Pi and a Relay - Tutorial](https://core-electronics.com.au/tutorials/solenoid-control-with-raspberry-pi-relay.html)** > > Here is how to control a 12 Volt Solenoid with a Raspberry Pi using a 5 Volt Relay. Solenoids are an immensely useful way to turn electrical energy into a linear motion. Solenoids come in a variety of different specifications with 5 Volt and 12 Volt... ---
**Author:** ![Oliver33](https://avatars.discourse-cdn.com/v4/letter/o/a9adbd/32.png) [@Oliver33](https://forum.core-electronics.com.au/u/Oliver33)\ **Post date:** [20 August 2021 04:21 UTC](https://forum.core-electronics.com.au/t/raspberry-pi-garage-door-opener/11100/7 "2021-08-20T04:21:14Z")
Neat idea 🙂 Do be careful though; garage doors are deceptively dangerous things. There’s a lot of energy stored in the springs - enough to injure about [20,000 people a year](https://www.garagedoors-saltlakecity.com/the-risk-of-injury-and-death-caused-by-garage-doors/) in the US! Do take note of all those warnings in the installation manual. And while it looks like the control system on your door is 24V, make sure you stay well clear of any 240V connections! That said, definitely seems like the simplest way to go would be to wire a relay into the control interface. You could try reverse engineering the remote, but they often (and should) have some form of security coding or encryption so other people can’t just open your door which makes it much more difficult.