CoolEFI JAGuar DIY ECU

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CoolEFI "JAGuar" version 0.7-alpha ECU PCB, our signature FOSS engine management PCB.

The FOSS project along with all the documentation is located at GitHub.

You will need a BDM module such as the CoolEFI USBDM to program the Serial Monitor program onto the microcontroller on the two options with bare PCBs.

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$15.00

  • Bare PCB
  • Bare PCB w/Parts Kit
  • SMD Soldered PCB w/Parts Kit
  • Fully Assembled PCB

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CoolEFI "JAGuar" version 0.7-alpha ECU PCB, our signature FOSS engine management PCB.

FOSS project along with all the documentation is located at GitHub.

You will need a BDM module such as the CoolEFI USBDM to program the Serial Monitor program onto the microcontroller on the two options with bare PCBs.

Firmware Recommendations:

This PCB was designed for use with the FreeEMS firmware to run an Internal Combustion Engine.

This PCB can also be used with the LibreEMS firmware to run an Internal Combustion Engine.

Introduction:

The name "JAGuar" comes from my initials and the great cat, keeping in the FreeEMS tradition of using cat names for hardware...  The aim of the JAGuar project is to create a hardware solution for FreeEMS that caters to the needs of the General Motors 4/6/8 cylinder engines running either an electronic advance distributor or wasted spark DIS system.  The JAGuar board can also be used for other 4/6/8 cylinder engines using a Ford EDIS ignition system.  The TC442xA Ignitor Drivers specified in the Bill of Materials can be used as logic level outputs to the logic level inputs on EDIS/DIS modules or to directly drive 12v ignitors (not coils).

Please see forum.diyefi.org for the most up to date information and links for this project and all of the other aspects of the FreeEMS project.

* You will need a BDM module such as the CoolEFI USBDM to program the microcontroller on this PCB.

Core IO Specifications:

  • 1 FTDI USB (bus powered) communications (USB-B-micro connector).
  • 2 RPM/Position VR or Hall/Opto/Digital inputs (ie: GM DIS Crankshaft 2x/3x/4x and 1x camshaft position sensor, CAM indicates cylinder #1).
  • 9 Standard 'CORE' analog inputs (IAT,MAT,CHT,TPS,O2,BRV,MAF,AAP,MAP).
  • 8 Available Port P PWM ports (PP0-7).
  • 8 Available Port B ports (PB0-7).
  • 2 Available Port K ports (PK4-5).
  • 4 ignitor 5v or 12v output channels, which can be used for:
    • Ignition advance output to GM DIS/GM HEI/Ford EDIS module.
    • DIS Bypass signal output to GM DIS/HEI module.
    • COP or CNP sequential ignition for 4 cylinder engines.
    • Wasted Spark ignition for 4, 6 or 8 cylinder engines.
  • 8 injector drivers (HI-Z ONLY 6A MAX per injector).
    • Can be setup to run 2 injectors from one CPU output using Port T4,5,6,7 (FreeEMS)
    • or 1 injector per CPU output using Port B0-7 (LibreEMS)
  • 6 Ground connections (CPU, Injectors, Ignition, TPS, O2 Sensor and Analog Sensors).
  • 2 "12V" connections (Both are to be +12V SWITCHED, please use relay(s) to supply power to these pins).
  • 1 High side driver (GM/Mazda fuel pump relay compatible).
  • 3 Low side drivers (can be used for Cooling Fan relay/Boost/Idle/TCC Lockup).
  • 1 Low side driver for fuel pump relay relay.
  • 1 switched +5V output for TPS.

PCB Information:

The PCB is 3" x 5" (76mm x 127mm).  It is a mixture of SMD and through hole components so that it can be completed by a hobbyist with access to a DIY reflow soldering oven for the SMD work and a good soldering station for the through hole components.  The SMD components are all on the same side of the PCB, the through hole components are on the opposite side of the PCB.  With patience and a steady hand, all the SMD components can be hand soldered.

Enclosure Recommendation:

Case suggested is made by Context Engineering and is made from extruded aluminum.  The part number for the case is 3008F-5N (flanged ends) and it is made for the Jaguar 3" x 5" PCB and is 1.85" tall overall. 
We do not normally stock this enclosure, but we can obtain it for you and add it to your order without incurring additional shipping costs from us to you, contact us for more information BEFORE you place your order.

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Additional Resources

Additional Resources for the CoolEFI JAGuar:

  • Windows FTDI VCP (Virtual Communications Port) driver from FTDI
  • Windows FTDI VCP (Virtual Communications Port) driver hosted at CoolEFI
  • Linux FTDI VCP (Virtual Communications Port) driver from FTDI
  • Linux FTDI VCP (Virtual Communications Port) driver hosted at CoolEFI

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CoolEFI JAGuar DIY ECU

CoolEFI JAGuar DIY ECU

CoolEFI "JAGuar" version 0.7-alpha ECU PCB, our signature FOSS engine management PCB.

The FOSS project along with all the documentation is located at GitHub.

You will need a BDM module such as the CoolEFI USBDM to program the Serial Monitor program onto the microcontroller on the two options with bare PCBs.

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