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MicroSquirt Module – V2.2M

January, 2009

BG Soflex, LLC

www.microsquirt.info

V2.1 Version Shown Here

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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

Module2x25 – 0.1” J2 Header

2x5 – 0.1” J1 Header

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J2 Header(0.150, 2.945)

(0.2, 0.205) (2.2, 0.205)

(2.2, 3.31)

(1.8, 3.31)

All DimensionsIn Inches

Mounting Locations for Module

All Finished Hole Diameters

Are 0.125”

J1 Header(1.0, 0.205)

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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 documentationfor 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 (gasoline+CNG), extended GPIO, etc.

….its up to you!

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MicroSquirt Module – Eval Board The MicroSquirt Module Experimenter’s 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.