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Topic: Simple bluetooth garage door opener (Read 1 time) previous topic - next topic


Hi , I am very new to this but keen to learn , I want to be able to use my Android phone to open my garage door , the door has a gnd &OSC[open stop close] terminals there is 3.24v running from these. Can i use an arduino BT with a transistor on an output pin to complete the circuit...? thanks H


think so,

How familiar are you with electronics and SW development?
You need to do some both on Arduino and on your Android phone.

additional requirements:
- close the door too :)
- send a secure code that differs per time => so if the code is intercepted during the day it can't be used in the night.
- learning mode
- multiple androids for one garage door (kids/wife/dog whatever)
- multiple garage doors with one application (code send depends on geo location)
- depending on time of day the arduino switches also lights on/off
- add timeslots when this app may work (e.g. it will only work between 06:00-23:00 over bluetooth)

I would start with
0) go throught the tutorial section of arduino.cc to learn about the platform
1) an Arduino opening the door
2) closing the door
3) learn about bluetooth & serial communication
4) develop the android app (might take several steps in itself)
5) merge both of them
6) think over the security algorithm
7) do 6 again ;)
8) implement the security algorithm
9) test it

Can i use an arduino BT with a transistor on an output pin to complete the circuit...?

Yes but better use some relays because that separates the circuits.

Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)


Thanks for the info, it is a great help

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