following the trials and tribulations (incorrect cables) I am unsure if getting the lazer working is feasable, this lazer is a discontinued product with a datasheet that contains no setup instructions and all parts listed I am unable to even find reference to outside of the datasheet. After attempting to work around these issuses I emailed the company who makes this device (Polytec) for help but, given this product is discontinued I find it hard to belive they will respond. The next best option would be scraping the datalines and finding out what is happening while reverse engineering the protocol they used which would likly take longer than 3 weeks to get a working prototype of. I still want to one day get this working but likly that idea will have to wait as I need something working for the final.
After realising fixing the issues with the lazer vibrometer is beyond the scope of what I can fix within 3 weeks I am spending more time on the origional final project idea, this plan is basically reverse engineering an already exsisting product while making it more flexable, open source and with more functions. because I am using microcontrollers I am able to reprogram this project whenver I want to add new features an expand upon it. The features I am already planning to add not included in the origonal are: FFT in real time analsis of input and output audio signal using the PIOs on the RP2040 zero, bluetooth audio, overdriving the audio signal to crazy levels, potential to add a webserver in the future. These additons are no small ask and the issue of phantom power is ever looming, currently if phantom power is sent to this device it will likely have several compents explode which is a major issue. The current plan for phantom power is to use a comparator with an input of < 5v to change between phantom power and normal voltage then seperating our logic, this might prove unfeasable or too much voltage lost but that is an issue for future jinx