08-31-2020, 01:44 PM | #67 | |
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Edit: What are you thinking about doing? If I remember correctly you should he able to tap the switches no problem and you could use any ground IMO. Would be better if someone could figure out how to code the modules correctly and get a LIN signal, since it is already prewired, but that would require extensive knowledge of these systems. |
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08-31-2020, 01:55 PM | #68 | |
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Not the most exciting use, but it would be super sweet to have an integrated valve control IMO! |
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09-01-2020, 05:49 PM | #69 |
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Small update:
After taking apart my steering wheel and inspecting the PCB, I came to realize that there are 9 buttons (or so) but only 8 pins on the PCB. This implies some sort of multiplexing - if I had to guess, half the pins are routinely sent a signal and the control board watches for a short circuit on the other pins (which is achieved when one of the buttons is depressed). 4 pins allows 4x4=16 combinations so this seems to match to my theory - however, I did not measure the voltage with the car battery connected because I didn't want to break anything. Anyways, all this means is that I cannot wire the M1/M2 buttons directly to my remote (which contains it's own battery) as I would effectively be putting these two circuits in parallel, and be constantly sending current into the control module, which is definitely not good and will cause unexpected behavior from the entire cluster. However, I do have an alternative solution that I will share if it works - parts I need will take a while to arrive, but I'll update here when that happens. Last edited by eeyang92; 09-22-2020 at 04:46 AM.. |
09-23-2020, 08:43 PM | #70 |
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Another update: I decided to try an alternate solution, by placing momentary switches over the existing contacts, and it works!
That being said, I know this isn't a sleek as using the existing circuitry, but I'm definitely not brave enough to mess with the pins controlling my cruise control, so this works nicely for me I detailed the steps I took here on my site: https://swiftstate.com/2020/09/24/di...st-controller/ |
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12-01-2020, 06:30 PM | #71 | |
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I have been wanting to do this for my MPE. It uses a stupid double click which would be nice to bypass. I would like to have the indicator light as well but it would be hard to do the brightness correctly so it would be visible in daylight and not blind me at night. I'm working on sourcing out a spare remote so I can start hacking it. |
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12-03-2020, 02:16 AM | #72 | ||
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Definitely interested to see what comes of the MPE remote! |
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12-03-2020, 11:37 PM | #73 | |
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