Help - Locked out of garage

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#2016956 16-May-2018 15:35

Batman:

how are you going to program it?

He proposes to try each combination by manually changing the dip switches until he finds the right combination. There are 256 combinations (assuming that these are two-state switches and not tri-state switches which I know some garage door openers have), but he shouldn't have to try every single combination as he should hit it before he gets to the last combination (unless he's really, really unlucky!)

neb

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#2016957 16-May-2018 15:37

kiwijunglist: Yea I'm pretty sure i remember repairing it and it had 8x dip switches inside. The problem is knowing what frequency it was. It looks a lot like this one, but the colour of the button is wrong.

You don't need the exact remote, all the basic ones use the 2262s so anything that uses that will work, it's basic OOK at 432MHz. You can even get kitsets that do this, Sparkfun has them too from memory. You can also get, from the ever-useful Chinese vendors, programmable emulator chips that should make the scanning easier.

The trick with these things isn't getting it set up to open the door, it's getting it set up to not open every other door in range, and vice versa.

neb

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#2016960 16-May-2018 15:41

Fred99:
I think that looks like a old remote that actually had 12 dip switches and each had three positions.

That would be the first time I've ever heard of a remote using a 2262 that's set up correctly (they're tri-state, 12 bits, so in theory 3^12 combinations). Every one I've ever seen treats them as binary and only wires up 7 or 8 bits worth (the remaining pins are on the other side of the chip and it's too hard to run traces across to the DIP switch).

neb

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#2016962 16-May-2018 15:43

Bung: The trouble with instructing from a distance is you can describe the hammer but not the subtlety of using it.

Subtlety and this hammer don't go in the same sentence.

Even the same page really.

wellygary

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#2016963 16-May-2018 15:43

MurrayM:

but he shouldn't have to try every single combination as he should hit it before he gets to the last combination (unless he's really, really unlucky!)

But don't bet on it,

When our kids changed the 3 digit combination on a suitcase we took on holiday....and I had to sequentially roll through all the possible combinations,... the new number was "977" :)

neb

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#2016971 16-May-2018 15:51

kiwijunglist: Princeton 2262 is 433mhz??.

They're usually run at 432MHz or close by (433) because it's ISM use. Not sure what 303Mhz is. The 2262 has a programmable frequency, I've always seen it set to 432 but you could probably jumper it for 303.

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MurrayM

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#2016973 16-May-2018 15:53

wellygary:

MurrayM:

but he shouldn't have to try every single combination as he should hit it before he gets to the last combination (unless he's really, really unlucky!)

But don't bet on it,

When our kids changed the 3 digit combination on a suitcase we took on holiday....and I had to sequentially roll through all the possible combinations,... the new number was "977" :)

Oooo, unlucky! How long did it take to try all those combinations?

neb

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#2016974 16-May-2018 15:53

wellygary:
When our kids changed the 3 digit combination on a suitcase we took on holiday....and I had to sequentially roll through all the possible combinations,... the new number was "977" :)

They've obviously never seen Spaceballs...

wellygary

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#2016998 16-May-2018 16:50

MurrayM:

wellygary:

MurrayM:

but he shouldn't have to try every single combination as he should hit it before he gets to the last combination (unless he's really, really unlucky!)

But don't bet on it,

When our kids changed the 3 digit combination on a suitcase we took on holiday....and I had to sequentially roll through all the possible combinations,... the new number was "977" :)

Oooo, unlucky! How long did it take to try all those combinations?

About 30 mins....

Fred99

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#2017005 16-May-2018 16:54

If it is only 8 x two position dip switches, then try all up one way, then all up the other way before going through all the possible combinations. A surprisingly large number of them seem to be set that way by default.

kiwijunglist

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#2017013 16-May-2018 17:12

Fred99:
If it is only 8 x two position dip switches, then try all up one way, then all up the other way before going through all the possible combinations. A surprisingly large number of them seem to be set that way by default.

One can only hope.

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Fred99

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#2017020 16-May-2018 17:40

neb:
Fred99:

I think that looks like a old remote that actually had 12 dip switches and each had three positions.

That would be the first time I've ever heard of a remote using a 2262 that's set up correctly (they're tri-state, 12 bits, so in theory 3^12 combinations). Every one I've ever seen treats them as binary and only wires up 7 or 8 bits worth (the remaining pins are on the other side of the chip and it's too hard to run traces across to the DIP switch).

Here's one - that's a Merlin remote with 12x3:

They're usually marked + 0 -. If you're needing to read the codes off a dusty board in a dark garage, then it's not easy to see what you're doing.

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#2017037 16-May-2018 18:21

kiwijunglist: I think i can buy this.

https://www.garagedoorremotes.co.nz/product/windsor-replacement-garage-door-remote.html

Which is also on aliexpress.

FOR Doormate remote control 303MHZ garage door remote
http://s.aliexpress.com/NVz6nQjM?fromSns=Copy to Clipboard

May be you missed my earlier reply. This may work: $20 buy now + shipping. This is not my listing and I am not sure it will work.

https://trademe.co.nz/1632360291

Fred99

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#2017059 16-May-2018 19:00

AKLWestie:

May be you missed my earlier reply. This may work: $20 buy now + shipping. This is not my listing and I am not sure it will work.

https://trademe.co.nz/1632360291

Yes - I think you may be right.

kiwijunglist

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#2017090 16-May-2018 19:22

yup i missed that!

oh well just bought one on aliexpress for 11usd, so i'm saving myself $5 but costing myself 3 weeks.

errr wife doesn't want to wait, bought both :D

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