I thought I would post a quick update to this project. The boards have been complete for a while and I had to assemble and debug. All of the issues have been software related. Thankfully, no current board revisions are planned.
The boards are dual sided. The topside is basic functionality for the MS system. This includes a micro controller, SD card slot and power supply. There is also display output and a trim-pot for the LCD contrast. The dual sided board was made with a full ground plane. Hopefully, this will cut down on cross talk and noise from the car environment. Boards are Sn plated Cu.
The backside of the board is for additional functionality. I have installed a 3-axis accelerometer and 10Hz GPS. This provides full vehicle dynamics capability whereby I can log all the parameters of the engine along with position, velocity (yes, speed and heading direction) and acceleration data.
Everything mounts nice and neat in a standard plastic project box. There are two switches to enable different datalogging functions. These are the .frd format for using in Tunerstudio and the vehicle dynamics logger which is a parameter datastack in .csv format. The comma separated value (csv) table will allow insertion into popular track video overlay programs.
There is a realtime output in the form of a multi-line character display. I have 2x20 and 4x20 display capability. The functionality is present to interface with a mobile LCD such that you would find in a cell phone. I have not coded this in yet but would consider depending on demand.
It has been a fun project to work on. I wish I had more time to devote to speed up the process. I am willing to sell boards plus a parts list if you want to assemble your own. I am working up final pricing now.
I will also provide the source .bin file to operate the device. Software is easily loaded using a USB connection. The device shows up as a flash drive and you just add the file to the device and reboot.