Everyone knows my obsession with building an ECU for my motorcycle. I think I'm far enough along with it, so here's where I'm at. It's based on the 40 pin BP headers and I believe should be compatible with the F5529 and TM4C123 LP's and maybe more. I still have to code for it but that will come when I'm satisfied with the hardware. The BP will sit on top of this board with its USB plug facing away from the 25 pin plug, and has the I2C and SPI ports left unused which would provide for a display, data logging or other devices to interface with it. Eagle files attached as well.
![LaunchEFI_rev1.png]()
4 low-impedance / peak-and-hold injector drivers based on LM1949 driver chips, 4 logic level outputs suitable for triggering GM/Delphi LS-type coils (LS1, LS2, D514A, et cetera) or external circuitry, samples manifold pressure, throttle position, and intake air and coolant temperature sensors as well as battery voltage for injector duration compensation and the 5v sensor rail and two additional 'extra' analog inputs. There may be some layout revisions which might possibly lead to more outputs for user-defined externals.
![Attached File]()
MSPEFI.brd 207.11KB
0 downloads![Attached File]()
MSPEFI_B3.sch 623.99KB
0 downloads
4 low-impedance / peak-and-hold injector drivers based on LM1949 driver chips, 4 logic level outputs suitable for triggering GM/Delphi LS-type coils (LS1, LS2, D514A, et cetera) or external circuitry, samples manifold pressure, throttle position, and intake air and coolant temperature sensors as well as battery voltage for injector duration compensation and the 5v sensor rail and two additional 'extra' analog inputs. There may be some layout revisions which might possibly lead to more outputs for user-defined externals.
MSPEFI.brd 207.11KB
0 downloads
MSPEFI_B3.sch 623.99KB
0 downloads