You'll also notice a new display. That's a neat OLED display - with improved menu system, option setting screens, more information, and status icons while running. However, the most significant improvements come from the RPM sensing circuitry and power management.
The old circuit relied on a directly connected transistor to sample the RPM signal. The new circuit is diode-protected and optically-isolated. This results in reduced noise, improved pickup response, and improved protection. The shift light is now totally isolated from your vehicles electronics and vice-versa. New power protection and a dedicated power regulator for the AMTEL chipset adds superior protection and noise elimination - taking the reliability and accuracy to new levels.
To make all this happen, I had to seriously overhaul major sections of code. It didn't take long before I hit (then exceeded) the program space on the AMTEL chip. The animation algorithms were totally stripped and re-written. A few menu items were removed and libraries were optimized. I had to save basically 20% of program space through redundancy checks and some good 'ol fashioned math.
Quality assurance and testing was carried out extensively. Not only did I scope nearly all inputs and outputs, but I also subjected the development units to different noise scenarios, power overloads, erratic signals, misconnections, and interruptions. The new circuitry performed admirably - detecting and accurately reporting signals down to 10% duty cycle and even AC signals +/- 15VDC.
Thanks again for the amazing community of dedicated enthusiasts from all makes, brands, models, and walks of life. This wouldn't be possible without you!
Jon @ Chippernut