2006 Vulcan Nomad Custom Speedometer Instrument Bezel

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My trusty 2006 Kawasaki Vulcan Nomad's instrument cluster has started to malfunction due to sun damage, making it impossible for me to see the display clearly. I've decided to replace it with an all-digital unit, and this is my project. There are some incompatibilities between the Vulcan and the new display unit, such as the speed sensor and gas gauge sensor, so I'm installing a CPU to perform the necessary compensations. Adafruit's CPU will convert signals between the Vulcan and instrument cluster. https://www.youtube.com/watch?v=XnBeBRjZbtk Note: The tiny m0 processor was initially used for testing until the M4 arrived. I purchased the M4 from Amazon, which has the processing power to handle up to 10K rpm and numerous pulses. https://www.amazon.com/gp/product/B07T3DBR8V/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 The m0 processor cannot handle these requirements. Debug of app: https://www.youtube.com/watch?v=jCGiD1r49s8 Testing signals to device for mph: https://www.youtube.com/watch?v=gKRbxlfor3M Test RPM: https://www.youtube.com/watch?v=Y-TD5PEV38s Test Fuel: https://www.youtube.com/watch?v=XwbjftRY-qc Frequency divider for speedometer: I need to reduce pulses from the Vulcan to this new display. https://youtu.be/pp9RYTo79FE On August 5, 2020, I received custom circuit boards from Hong Kong. I used this company and was very pleased with their cost and results. They charged me $2 for five of these boards, which was the minimum order requirement. I added pictures of the board, which is double-sided. All that's left to do now is solder in the parts. https://jlcpcb.com/ This project is a work in progress, and many things are subject to change. I posted this to show my progress and the overall idea behind this project. Once it's complete, I'll update the circuit boards, designs, etc. August 7, 2020 - I'm testing the assembled circuit on my workbench. I had to remove the input caps on the speedometer op-amps because they were filtering out the signal too much. August 15, 2020 - I uploaded the latest Python script for the processor and still need to test it. On the CCT board, I removed the input caps to the op-amps for the speedometer, tach, and also the diode on the tac input. The components that were removed are C3, C4, C9, C10, and D1.