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Reverse engineering Control panel to control with a pi

craigst

I have a led bar with a control panel, has 8 buttons and a led light mimic of what the leds are doing on a panel i wana control it creating a python gui on a touchscreen

 

im need to data reverse engineering so far i have a 12+ a negative and 1 signal wire

 

What do i need and what best way to make a clone and put gui over the top ?

 

thanks for any advice

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  • in reply to craigst

    Hi Craig,

     

    You're doing it right, examining the signal. Unfortunately it could be any encoding scheme, so all that can be practically done (based on the information so far) is just to try to look for patterns and try to decipher it. It could be tedious work and may take a long time : (

    Or, you could ask the manufacturer, they may be kind enough to provide some information. Not all manufacturers will though : (

    The device likely has custom code in a microcontroller, so there is no way to predict what the encoding scheme is from the photos. A cheap logic analyzer could be helpful, but the problem is that if you're seeing 10V then most logic analyzers will not be compatible, so you'd need to divide down the voltage with a couple of resistors before hooking it up to a logic analyzer.

  • in reply to shabaz

    Gotta agree With Shabaz, you can slowly debug the control panel from scope of signal analyser traces or much better try contacting the manufacturer or distributor  of the panel or maybe even the kit as a whole remember you are going to require level shifting to use an analyser and also when you test the opposite for the RPI. Either way this is likely to be a very time consuming task!

  • in reply to Problemchild

    Well all have to start somewhere and I know it will take time but this is a small part of a large projects although this will be hardest part to tie into the controller