Dec 31 2016
In 2016, it was done a lot, and in 2017 will be even more!
SECU-3 – Open source engine management system
Created by Alexey A. Shabelnikov (STC) © 2007-2018.
Using of materials from this site without a reference to source is prohibited!
SECU-3 project news
Sep 5 2016
Two wiring diagram examples have been added. These wiring diagrams show only BIP373 and coils, connecting all other sensors and devices please see on other wiring diagrams and installation manual.
Wasted spark, 8 cylinders, SECU-3T unit, BIP373:
Full sequential ignition, 6 cylinders, SECU-3T unit, BIP373:
Jul 11 2016
Author is glad to introduce a new version of the SECU-3 Engine Management system – SECU-3i unit.
SECU-3i unit consists of two boards.
Developed hardware is versatile. All inputs and outputs are fully protected.
Author is developing software for this unit now. After that, full testing of the system will be started.
Watch for news!
Jun 22 2016
Testing of the SECU-3M (Micro) unit has started!
Assembled PCB for SECU-3M:
PCB with installed Bluetooth module:
Jun 22 2016
Apr 13 2016
New software release is available (firmware, boot loader and SECU-3 manager).
File secu3app/binaries.7z contains 42 different firmware files (different configurations). The archive contains file release.txt which has the description of all firmware files.
File secu3man/binaries.7z contains the executable file and the libraries of SECU-3 Manager. SECU-3 Manager in the form of single executable file is here (operates on MS Windows, but doesn’t operate on Wine).
Link for the archive with release (including source code): secu-3_software_release_13042016.zip
Briefly about what has been implemented in this release:
The release branches are in next repositories:
Feb 12 2016
New SECU-3 Lite PCB are available (rev.4). In this version added support of coolant temperature sensor and other small improvements.
For ordering please write to firstname.lastname@example.org
Jan 17 2016
4-channel P&H injector driver unit. Can be used with various types of ECU. Inversion and pull-up/pull-down resistors can be configured for each input (config. provided on PCB).
Test of this unit has started.
Jan 16 2016
4-channel Peak-n-Hold injector driver PCB:
If you want to order it, please write to email@example.com