The MegaSquirt Project has experienced explosive growth other the years, with hundreds of new MS installations occurring every week - a phenomenal success! MegaSquirt has been successfully used in all aspects of Internal Combustion engine applications including R&D, Industry, Race, and Research. The MS project has transformed itself from a simple R&D project into a full-featured mature engine control system. To reflect this the support structure has also changed to meet the needs of MegaSquirt Users.
Moving forward, the R&D forums for MegaSquirt project are in a read-only mode - no new forum posts are accepted.
However the forums will remain available for view, they still contain a wealth of information on how MegaSquirt works, how it is installed and used. Feel free to search the forums for information, facts, and overview.While the R&D forum traffic has slowed in recent years, this is not at all a reflection of Megasquirt users, which continue to grow year after year. What has changed is that the method of MegaSquirt support today has rapidly moved to Facebook, this is where the vast majority of interaction is happening now. For those not on Facebook the msextra forums is another place for product support. Finally, for product selection assistance, all of the MegaSquirt vendors are there to help you select a system, along with all of the required pieces to make it complete.
A forum for discussing applications and implementations of the MegaShift transmission controller code for the GPIO from B&G. This can control up to 8-speeds and 6 shift solenoids (plus a 16x9 table for controlling a PWM line pressure valve). It has manual and fully automatic modes (16x9 load x speed table), with under and over rev-limit protection, and full data logging of all inputs and outputs (among many other abilities). A TransStim to test your completed board is also available.
Is it possible to get a copy of the Version 5 C code at all? I'm interested in seeing how the timing for the off going and oncoming solenoids works. I'll shortly be starting testing on a Ford 6R80 transmission and the timing of solenoids on the modern clutch to clutch transmissions is critical and if timed incorrectly can bind the transmission which doesn't sound like a good thing
What is it that you are concerned about? We can generally implement any scheme that makes sense and has sufficient users to make the effort worthwhile. The current code waits for the pressure adjustment delay to elapse, then it switches the solenoids one at a time, but all within a millisecond or so (with the standard setup). Achieving a higher level of accuracy is difficult because of the various interrupts that are activated (like the CANbus, serial comms, VSS, ISS, etc.). The current 'new serial' (aka. 'envelope') communication routines prioritize speedy comms over output accuracy, unfortunately.
There are no plans to release the 5.xxx code in the immediate future as it is still undergoing development, and is likely to for a while yet.
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it." - George Bernard Shaw
