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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 09-15-2012, 03:32 AM   #1
PeteAU
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Join Date: Oct 2011
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DIY Open garage from steering wheel & BMW key

So we don't have home-link units here in Australia because we use different frequencies. I thought there's got to be a simpler way, what about those spare buttons on the steering wheel like R/T and Phone?

Step 1: Take apart your spare garage remote

Step 2: Build your own iBUS relay board - that's the hard part

Step 3: Installed in the boot & working I didn't touch anything inside the cabin.

Hmmm now what else could I control with my other two relays?
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Last edited by PeteAU; 09-16-2012 at 01:05 AM.
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Old 09-15-2012, 03:37 AM   #2
benzovs
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Sweet! Where did you get the bus interface module?
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Old 09-16-2012, 12:23 AM   #3
PeteAU
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Now I managed to make it work via the BMW fob! I just hold down the trunk button for more than 5s and it will open my garage (and not open the boot). Even got the headunit LEDs to give me some feedback. See video.



Quote:
Originally Posted by benzovs View Post
Sweet! Where did you get the bus interface module?
I designed my own board, sent it to China to get fabricated. $14 later I had it delivered, amazing what China can do. I have spares, but I'm reluctant to offer them, people might think they're easy to but together.
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Old 09-19-2012, 02:56 AM   #4
TrickTizzle
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Where and how do you order?
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Old 09-19-2012, 04:49 AM   #5
PeteAU
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Quote:
Originally Posted by TrickTizzle View Post
Where and how do you order?
I'd love to turn them into a product, but I don't think they'd be economical unless I sold them for $50 each. If you're good with electronics and can program a microcontroller, I could send you a bare board for postage only.
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Old 09-21-2012, 12:20 AM   #6
Ballistic325
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Quote:
Originally Posted by ppmz View Post
Hmmm now what else could I control with my other two relays?
Your missus?

One of the guys in the Aus section stripped a home link unit and replaced the insides with his garage remote internals. There's some posts and pics in a misc thread somewhere...


Love your work

Wish you were in Sydney.

EDIT: if you did productise them, I am sure that you would get plenty of sales from the Aus section. Just a thought
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Last edited by Ballistic325; 09-21-2012 at 12:23 AM.
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Old 10-02-2012, 08:49 AM   #7
PeteAU
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Originally Posted by Ballistic325 View Post
if you did productise them, I am sure that you would get plenty of sales from the Aus section. Just a thought
I've no idea how to get electronics manufactured, but there's probably $5 worth of parts in it if you know how to solder.

--
Moved garage-open to the phone button, plus managed to show diagnostics info on the head unit. A bit basic, but just experimenting. Video:
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