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Thread: Controlling this hvac with FB?

  1. #1
    Join Date
    Feb 2012

    Controlling this hvac with FB?

    Looking to control my hvac unit out of a 2003 Pontiac Bonneville with the Fusion Brain but I'm scratching my head as to how to trigger the buttons and such. I know its probably a simple solution, but it just ain't coming to me. Any help will be greatly appreciated.

    Here's what the contacts for the control buttons look like

    And there's one of these for each blower speed and temperature

  2. #2
    Join Date
    Feb 2012
    Well after a few days of working on it on and off, I got this design made up in Cadsoft Eagle. This schematic pretty much represents how the switch part of the board operates. Left out the LED circuit as I'm not going to be doing a thing with them. Looks like all I have to do is measure what voltage the board requires and then I can just solder wires to the pins on the end of the ribbon to trip each feature. I'll pick about 5-7 of the fan speed and temperature resistances to use (not going to wire for all 21 of them each lol)

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