I know are some on here far more clever than me, so I wonder if anyone can help. I want to install a remote for my garage doors on my Multistrada, and want to go simple with it not involving my phone etc which I don't even have turned on a lot of the time.. Our drive is very steep, with my other bikes I can stop on the slope, hold the bike back with my feet whilst I remove a glove and fish around in my pocket for a remote. The Enduro is too heavy to do this and I'm going to go over on it if I keep trying. I'm going to buy a spare remote, remove the PCB, solder wires to the 'open' tack switch and run the cable to a waterproof handlebar switch. The spec says the 2yr old Ellard units are 433Mhz, which makes sense with current trends etc. Now I don't know a great deal about these things, but I do know you need an Oscillator crystal on the remote and receiver to set the frequency of the signal. My limited understanding from mucking about with communications stuff in the past tells me the Crystals won't have exactly the same value, but will be around the frequency in the spec. Opening up my remote and receiver I was a little surprised to find Oscillator crystals at @26/27Mhz, which is the frequency used for remote control cars etc and worries me with regard to security. Receiver: Remote: Have I got this wrong? Have I been sold old units running on 26Mhz and given a data sheet for newer ones? Can the units be transmitting at 433Mhz using 26Mhz Oscillators? I doubt it. I obviously can't get hold of the supplier or a spare remote to try until Tuesday. Thanks
Never worked on remotes as they are all made in Asia. The Oscillators and Crystals can't run at 433 so they shall be upscaled to the frequncy needed., one of the "little black spiders" shall do that. 433 is the low power no licence standard in UK. This is the carrier frequncy. The info/data frequncy (which is modulated on top of the carrier frequncy) shall be very small maybe Khz
Can you identify a frequency multiplier on the circuit board? Something like a 16+ PLL. Does not really make sense when the correct frequency oscillator crystal could be bought just as cheap.
Thanks Chris. I don't want to involve my phone in this and am happy to press a button as I come down the road. Simple suits me I'm afraid.
Thought I'd update this thread. I brought one of these: https://www.ebay.co.uk/itm/393871967236 Cut out the backlighting wires as I didn't want to connect to the bike at all which reduced the loom size significantly. Then stripped one of our spare remotes down and soldered the wires from the handlebar switch either side of the Up, Down, and Stop buttons: Note the slide still covers the buttons, and they still work if needed. The switch was then simply added to the Left hand handlebar, and the remote stuck under the nosecone plastics out of the way with self adhesive velcro: It worked fine when I tried it, so now I can push the up button as I approach the garage, and the down when I leave.
I've often thought of doing something like this on my 916 but using the flash to pass button on the oem controls to just open the door when I get home from a night shift but as of yet it's still on the to do list but it's nice to see someone's proven my idea could work
