Hello!
I've got a cheap set of 433 MHz receiver and transmitter ( EBAY LINK ).
I've been able to use it to controll 433 MHz remote controll power sockets via this library: LINK. I just had to run the receive sketch and then a code appeared and the amount of milliseconds and I could just retransmit this code for the same time and that's how I can controll my sockets now.
But when I use the remote of my garage door opener, nothing appears. The same result in the RCswitch and VirtualWire libraries (these last two libraries don't give any results for neither my remote for controlling my sockets and my garage door opener).
How could I be able to hack my garage dor opener code? It's an opener from the 'Marantec confort 140'.
I've got an audiojack, but I think I don't have a line-in. Anyway, connecting the audiojack to the 2 datapins of the receiver and plugging it in the microphoneplug doesn't work (no result in audacity).
thanks!
Bram
Many garage door openers use a rolling code transmitter to provide extra security.
if yours does, they arnt hackable.
Well you can add a transistor across the switch surely?
Yes it will by crypto-locked of course, probably the same system as used for car locks.
Even if the system doesn't have a rolling code, they don't all use 433mhz AM
some use 433mhz fm, some use 315mhz, some use 915mhz.
I had to repair the remote control on my garage door, and I had to fit an external receiver and use it to trigger the external switch input to the door, I.e I put the external receiver switch relay in parallel with the switch inside the garage.
I bought a key fob and receiver unit from eBay, which had 2 channels, I.e 2 buttons on the fob and 2 relays in the receiver.
However the unit proved to be useless, because the relays latched rather than only being activated while the button on the key fob was pressed.
So I ended up having to fit a micro arduino inside the receiver box, and using the RCSwitch library.
But the RCSwitch library didn't really support the data from the key fob, because the long sync pulse is sent after the data, fortunately if you hold the button down on the key fob it keep sending and the sync pluse at the end of the first data block is recognised by RCswitch as the sync of the second data block, and hence RCSwitch returns a code that can be checked in my Arduino code.
However overall, I would have been better off buying an Arduino compatible key fob and building my own receiver unit of an Arduino mini and receiver and relay module.
actually, Home Depot sells a transmitter and receiver for $20.00
you can put it on the wires for the opener and use both the operational an the new one.
had to do that to get the remote on the car visor to work. the one on the old opener was too old.
shame they are not hackable. that receiver is nice as is the transmitter.