MicroSquirt Module

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MicroSquirt Module V2.2M
V2.1 Version Shown Here
January, 2009 BG Soflex, LLC www.microsquirt.info
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MicroSquirt Module

• MicroSquirt encapsulates pretty much everything
  that MegaSquirt has to offer, in a board the size
  of a business card. It would be nice to have this
  package for a true DIY setup
• For real engine experimenters, the MicroSquirt
  PCB is offered in a module format
• The exact same circuit of MicroSquirt is used
  (except ignition drivers, its logic-level output
  only on the module).
• Ampseal is replaced with a 0.1 header, two rows
  of 25 pins (J2). All I/O are present on this
  header. Easy-to-source solution.
• Additional processor I/O brought out on 2x5
  header (J1).
• Module size is 2.4 inches X 3.5 inches
  credit-card sized!
• Complete, tested module loaded with embedded
  Engine Control Firmware.

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The MicroSquirt Module
2x25 0.1 J2 Header
2x5 0.1 J1 Header
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J2 Header (0.150, 2.945)
(2.2, 3.31)
(1.8, 3.31)
All Finished Hole Diameters Are 0.125
All Dimensions In Inches
J1 Header (1.0, 0.205)
(0.2, 0.205)
(2.2, 0.205)
Mounting Locations for Module
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Pin 1,2 - 12V Battery Pin 3 MAP Pin 4 - Serial
Rxout Pin 5 Coolant Pin 6 Serial Txout Pin 7
AccelLED/GPIO Pin 8 Bootload Pin 9 MAT Pin
10 CANH Pin 11 WarmLED/GPIO Pin 12 CANL Pin
13 TPS Pin 14 VR in2() Pin 15 - Vref
Pin 16 SpareADC2/MAF Pin 17 SpareADC1 Pin 18
FLEX Pin 19 Opto in() Pin 20 Fidle Pin 21
Opto In(-) Pin 22 Fpump Pin 23 VR
In1() Pin 24,26,28,30,32 Inj1 Pin 25 VR
In(-) Pin 27 O2 Pin 29 Tachout Pin 31
SensorGND Pin 33,35,37,39,41,43,49 PowerGND
Pin 34,36,38,40,42 INJ2 Pin 44,46 IGN2 Pin
48,50 IGN1
Module J2 Pinout
See MicroSquirt documentation for signal
descriptions http//www.microsquirt.info
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Pin 1 PA0 Pin 2 PE1 Pin 3,5 - Gnd Pin 4 -
Alt-INJ1 Pin 6 Alt-INJ2 Pin 7 PT7 Pin 8
Alt-CAM Pin 9 PT6 Pin 10 IACEnbl
Module J1 Pinout
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MicroSquirt Module

• I/O Header is standard .100 (2.54mm) size, 2
  rows of 25 pins (50 total circuits). Unpopulated.
• Example receptacle header Tyco/Amp 7-534206-5
• Matching pin header Tyco/Amp 9-146254-0-25

• Standoffs are 7/16, 1/4 Hex with 4-40 screws
  (Fascomp FC2103-440-A).

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MicroSquirt Module

• MicroSquirtModule is designed to be plugged into
  a Motherboard arrangement. This allows you to
  design your own custom PC board with any
  connector and accessory options you would like
  here are some ideas
• USB connectivity
• Bluetooth or Zigbee Wireless
• On-board MAP and Baro sensors
• On-board signal stimulator
• Use of WBO2 modules
• Connector for direct plug in (EEC-IV, L-Jet, GM,
  etc.)
• Multiple modules for redundant setups, auxiliary
  fuel injectors, dual-fuel setup (gasolineCNG),
  extended GPIO, etc.

.its up to you!
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MicroSquirt Module Eval Board

• The MicroSquirt Module Experimenters board
• Mounts MicroSquirt module, breaks out all signals
  to screw terminals. For test and evaluation of
  the MicroSquirtModule.
• Provision for MAP sensor, Serial DB9, and
  selection DIP switches.
• Large user prototype area and user circuit for
  PIC18F processor, CAN, LEDs, serial transceiver,
  5V power supply.