Expansion board - Revised layout posted

Turbo4V · Post by **Turbo4V** » Sun Jan 22, 2006 11:33 am

I'd be interested... Is there any chance of running 2 MC9S12's???

Justin

WolfGTI wrote:I am willing to foot a max of 1/3 of the $300 startup cost - anyone else want to step up?

DIESEL62 · Post by **DIESEL62** » Sat Mar 04, 2006 8:22 pm

has anyone got any further with this ? seems to have faded away.Has anyone got one up and running ?

WolfGTI · Post by **WolfGTI** » Wed Mar 08, 2006 5:07 pm

We have the 300 now - I will contact the board creator and begin this moving forward.

Post by **jsmcortina** » Wed Mar 08, 2006 5:38 pm

I don't want to throw water onto the creativity, but do consider the software, driver hardware and user support.

Without these a great idea can fall on its face.
Look at Tomtek for example, Tom Dolsky created his own 8 channel COP controller as an add-on to Megasquirt-1 on the v2.2 board, but few if any ever adopted it because there was no documentation and they didn't know where to start. In many areas it was technically more advanced than MS1/Extra or MS2.

James

T3Bunny · Post by **T3Bunny** » Wed Mar 08, 2006 5:48 pm

James, its riunning standard ecu code from what I have gathered. Now the new board will also have serial connection. So its kinda like multiple can setups but without the CAN bus.

ca434sbc4 · Post by **ca434sbc4** » Thu Mar 09, 2006 8:19 pm

Yes the board will run any of the '908 s/w. I'm going to make one additional change to the board and that is to allow the end user to select which GPIO '908 pin is tied to a given input or output circuit. This way you have complete freedom to wire it up how you want it.

WolfGTI · Post by **WolfGTI** » Tue Mar 21, 2006 12:57 pm

All the money has been received - many thanks to those who pledged their support towards making this happen. - updates on board dispersement will follow as soon as I have a schedule.

ca434sbc4 · Post by **ca434sbc4** » Mon Mar 27, 2006 9:59 pm

All,

Attached is the revised schematic for the MS-EXP board. Key changes are:

- RS232 comms added
- Almost all GPIO and PWM channels brought out to headers
- All external inputs both isolated (4) and non-isolated (3) are connected to a header
- All inputs to the output buffer transistors (7) are connected to a header.

This will allow the end user to determine which input/output is connected to a given '908 pin - full freedom to do what you want.

The RS-232 connection is brought off board with the same connector Lance is using on the GPIO board as I think the distributors will be stocking this cable.

The design is open for comment until April 3/06 at which time I will freeze the schematic and go into layout with no changes, once commited to layout.

Marc

ca434sbc4 · Post by **ca434sbc4** » Mon Apr 03, 2006 8:36 pm

We didn't get any comments on the schematic so I guess everone is happy with it, starting tommorrow I'll begin the layout process and will post srceen captures once complete.

ca434sbc4 · Post by **ca434sbc4** » Thu Apr 06, 2006 9:01 pm

All,

I hope by early next week I can send the PCB files to the board shop and get a quote. Will keep you posted.

Any one care to volunteer to do the design check?

Marc

ca434sbc4 · Post by **ca434sbc4** » Mon Apr 10, 2006 9:58 pm

Attached is the final schematic for the Rev. 2 exp board.

I have completed the layout and sent the PCB file to the board house to get a quote which I expect in the next few day. When I have the quote I will post the amount and then discuss with Wolf for funding the buy.

Once the bare boards come in I'll inspect them and then ship the required qty. out to Wolf who will forward them onto the kind folks who antied up for the new revision. So by Mid May we should be all done. There has not been a significant change to the PL except adding the RS232 port.

I'll work on adding the new parts to the PL and ask Lance to post it.

ca434sbc4 · Post by **ca434sbc4** » Mon Apr 10, 2006 9:59 pm

Attached is the final schematic for the Rev. 2 exp board.

I have completed the layout and sent the PCB file to the board house to get a quote which I expect in the next few day. When I have the quote I will post the amount and then discuss with Wolf for funding the buy.

Once the bare boards come in I'll inspect them and then ship the required qty. out to Wolf who will forward them onto the kind folks who antied up for the new revision. So by Mid May we should be all done. There has not been a significant change to the PL except adding the RS232 port.

I'll work on adding the new parts to the PL and ask Lance to post it.

esv · Post by **esv** » Tue Apr 11, 2006 11:59 am

Very interesting!

As I understand, with this board one will have the advantages from both MS-2 and MSnS-E.

Will its tuning-procedure with MegaTune be the same?

If one is to use a MS-2-board with CAN, will it still be able to conect to the forthcoming router board as well?

You see, I am after a MS able to run a 5 cyl engine with fuel injection, coil on plug ignition and turbo-boost control!

Thanks in advance

ESV

ca434sbc4 · Post by **ca434sbc4** » Tue Apr 11, 2006 4:05 pm

Yes if you are running MS2 you can still use all the features that the MS2 offers including the CAN bus. The expansion processor can run ANY of the code that is written for the '908 processor, with the addition of the serial port tuning is IDENTICAL to MS1 or MSnS-E. The EXP board DOES NOT need any special s/w to run.

The only input signals the EXP board shares with the main MS processor (MS1 or MS2) are:

MAP
CLT
TACH
O2
MAT
TPS
BATT

The output signals from the EXP board are designed to drive an external power device. Upto 80ma from each output can be source or sunk depending on how you configure the output drive transistors. The 7 output transistors can be mapped to ANY of the GPIO pins including the PWM pins on the '908 processor, of course the processor pins must be set up as outputs in the s/w.

There are 3 types of inputs signals:

qty. 3 un-buffered inputs
qty. 4 opto-isolated inputs
qty. 2 analog inputs (permanently connected to the '908 processor)

7 inputs can be mapped to ANY of the GPIO pins on the '908 processor, of course the processor pins must be set up as inputs in the s/w.

So you have complete freedom to wire the EXP I/O to any of the available GPIO pins on the EXP '908 processor.

esv wrote:Very interesting!

As I understand, with this board one will have the advantages from both MS-2 and MSnS-E.

Will its tuning-procedure with MegaTune be the same?

If one is to use a MS-2-board with CAN, will it still be able to conect to the forthcoming router board as well?

You see, I am after a MS able to run a 5 cyl engine with fuel injection, coil on plug ignition and turbo-boost control!

Thanks in advance

ESV

esv · Post by **esv** » Wed Apr 12, 2006 4:21 am

Thanks a lot for answering!

One last thing, when mapping/tuning an engine with a finished MS-combo as I described above (5 cyl, fuel injection, coil on plug, boost control) with MegaTune:

When everything is set up properly firmware-wise, do one map/tune the functions on the MS-2 board and the functions on the EXP '908 board seperatly, or is it just connect the PC to the one of the two rs232 ports and map/tune all functions at once with MegaTune as with an ordinary MS-2?

What I mean is, during tuning/mapping a finished MS-2/EXP connected to an engine, do one have to unconnect the DB9 cable from the MS2-rs232 after mapping the MS-2 specific functions, and then connect the DB9 cable to the other EXP-rs232 to map/tune those functions specific the the EXP board?

It is the tuning/mapping procedure for an engine with of the finished MS I am cureous about.

You see I have mapping experience with MS-2 using MegaTune but never done anything with the codes/firmware.

ESV

ca434sbc4 · Post by **ca434sbc4** » Wed Apr 12, 2006 11:45 am

Correct you must connect the RS232 cable from the laptop to each processor one at a time in order to adjust any parameters.

What I mean is, during tuning/mapping a finished MS-2/EXP connected to an engine, do one have to unconnect the DB9 cable from the MS2-rs232 after mapping the MS-2 specific functions, and then connect the DB9 cable to the other EXP-rs232 to map/tune those functions specific the the EXP board?

ca434sbc4 · Post by **ca434sbc4** » Tue Apr 25, 2006 4:28 pm

I'm waiting for funds to arrive from WolfGT to place the order.

T3Bunny · Post by **T3Bunny** » Wed May 03, 2006 11:50 am

Are these going to be avalible to otheres that didn't get in on Wolf GTI's order? I am interested in one of these as I want to play with a MS-2 sitting here, but I can't afford to loose my MsnSe features.

ca434sbc4 · Post by **ca434sbc4** » Thu May 04, 2006 4:59 pm

I'm planning on making the bare pcb availible through the distributors with minimum buy - I just don't have time to deal with one's and two's.

T3Bunny · Post by **T3Bunny** » Thu May 04, 2006 7:46 pm

Rough idea of timeframe and cost?

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