Search found 200 matches

by dontz125
Thu Mar 21, 2019 9:37 pm
Forum: JimStim
Topic: testing the 2wire PWM idle valve.
Replies: 3
Views: 1054

Re: testing the 2wire PWM idle valve.

A short from 12v to 5v on the JimStim could have 'unintended consequences' to the MS processor!
by dontz125
Fri Aug 10, 2018 12:48 pm
Forum: I/O Extender
Topic: Push button start and shutdown
Replies: 81
Views: 51085

Re: Push button start and shutdown

Ah! Understood. Agreed, that would (hopefully) have little to no effect on the running of the engine. The hard part then becomes selecting which message to send ... (It isn't *hard*, just select the 'load message from' location depending on the pin status. Just takes some coding. By someone who know...
by dontz125
Fri Aug 10, 2018 2:34 am
Forum: I/O Extender
Topic: Push button start and shutdown
Replies: 81
Views: 51085

Re: Push button start and shutdown

I don't think there would be an issue on the MS side if it received the shutdown and reset message on a continuous basis. If it *always* received the 'cut' and 'reset' messages in the same order every CAN cycle, it might not cause problems. If the reset preceded the cut, either contiuously or inter...
by dontz125
Fri Aug 10, 2018 2:09 am
Forum: I/O Extender
Topic: Push button start and shutdown
Replies: 81
Views: 51085

Re: Push button start and shutdown

Checked the serial protocol again, and - oh, look. Offset and size are both 2-byte fields. *sigh* Thank you ... :roll: Rummaging through m2extra.h, I came across the following: typedef struct { /* Adj variables. Table = 7, offset = 0, 2, 4, 6. type = S16 */ int FuelAdj, SpkAdj, IdleAdj, SprAdj; // a...
by dontz125
Fri Aug 10, 2018 1:10 am
Forum: I/O Extender
Topic: Push button start and shutdown
Replies: 81
Views: 51085

Re: Push button start and shutdown

Thanks for the info. So, if the MS3 has it set that 11-bit CAN Message ID 666 will shut it down, sending 11-bit CAN Message 666 will shut down the engine, AND leave it off until it's either power-cycled or it recieves the reset command - correct? The MS2 ini has nothing resembling "shutdown". The MS...
by dontz125
Thu Aug 09, 2018 8:58 pm
Forum: I/O Extender
Topic: Push button start and shutdown
Replies: 81
Views: 51085

Re: TinyIOx and CAN-EGT

I've talked with James and CAN shut down (through fuel cut) will be there in the next release of MS2/Extra and MS3. Now I just need to implement a stop button (or some other input) feature... Jean I'm either blind or blond (pick one) but I have never been able to find this function in either codese...
by dontz125
Mon Jul 23, 2018 5:34 pm
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

CAN Broadcast parameters - Set-up Procedure

To summarize the previous several many posts: 11-bit and 29-bit CAN Broadcast ID number: The 11-bit and 29-bit CAN ID is purely an identifying number. Unlike the 29-bit MS-CAN protocol, there is no inherent meaning or data value to the number. So long as all devices on the CAN-Bus understand and agr...
by dontz125
Sat Jul 21, 2018 3:37 pm
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

Re: CAN Broadcast parameters

:D
by dontz125
Sat Jul 21, 2018 8:44 am
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

Re: CAN Broadcast parameters

And the 11-bit message is not located in bytes 2 and 3 but bytes 0 and 1 Yeah, I had that figured out; I got confused when 'Byte 1' refused to accept / allow a $00 value. :? Ok - the new ini is allowing anything and everything put up by the spreadsheet. Thanks! Heh - once I wrapped my brain around ...
by dontz125
Fri Jul 20, 2018 9:03 pm
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

Re: CAN Broadcast parameters

There's something odd with the spreadsheet vs the TS for the IOx. Byte 1 and byte 0 seem to reversed between the two; 1520 => 0 = $BE, 1 = $00 in the spreadsheet, but byte 1 in TS has a minimum value of $18, meaning that byte 0 has to be the $00. More confusion ensues when I use the calculator, and ...
by dontz125
Fri Jul 20, 2018 7:07 pm
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

Re: CAN Broadcast parameters

Perfect - thank you!
by dontz125
Fri Jul 20, 2018 5:34 pm
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

Re: CAN Broadcast parameters

Excellent - understood so far! The identifier and offset settings in IOx Broadcasting and MS3 CAN Receiving are now quite clear - thank you. Just one or two more q's ... - I don't see an option to set Baud rate. Is this fixed at 500k? - The "Base Settings" [outmsg] option has always confused me. Doe...
by dontz125
Thu Jul 19, 2018 10:12 am
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

Re: CAN Broadcast parameters

"the ID is just a number" - and THERE's the source of the confusion! :lol: Alrighty, then. Looking at TS for MS3 1.5.1 under 'CAN Receiving', it would appear that the ID number is ... almost randomly selectable; so long as the broadcaster and receiver use the same ID for the same things, it seems to...
by dontz125
Wed Jul 18, 2018 11:04 am
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

Re: CAN Broadcast parameters

Looking again at the MS CAN protocol and the standard 29-bit chart, I don't see why it was changed. I don't see that anything is gained. All the info in the MS CAN header is in the standard header; 4 bytes are sent. ??? Can the MS2 and MS3 receive standard 29-bit (SRR, IDE, RTR) format frames? Can t...
by dontz125
Wed Jul 18, 2018 10:53 am
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

Re: CAN Broadcast parameters

OK - let's see if I followed that correctly ... In an 11-bit message, byte 0 is [ From ID ][ To ID ]; byte 1 is [ Table bits 0-3 ] [ Table bit 4 ] [ Spare ] [ RTR = 0 ]. Bytes 2 & 3 = 0. If you only have the table ID, how do you specify the offset? I may have been confused by a comment in the MS3 TS...
by dontz125
Tue Jul 17, 2018 6:57 am
Forum: I/O Extender
Topic: CAN Broadcast parameters
Replies: 16
Views: 5100

CAN Broadcast parameters

Hi, Jean. I've looked at the MS-CAN protocol manual; I've looked at the sheets for standard 11- and 29-bit CAN frames. I've looked at your intro post to the 0.1.1 firmware . What I have yet to determine is the slightest correlation between the 4 bytes on the CAN broadcast page with their default val...
by dontz125
Fri Mar 23, 2018 3:26 pm
Forum: I/O Extender
Topic: 5 Vref
Replies: 16
Views: 8419

Re: 5 Vref

This is the basis of what I (once did and shall again) market as a QuadraMAP, with a more robust power supply and filtering. Adding more sensors really is just a matter of ... adding more sensors, each with its diode.
index.jpg
index.jpg (5.32 KiB) Viewed 8184 times
by dontz125
Tue Feb 13, 2018 4:53 pm
Forum: I/O Extender
Topic: 5 Vref
Replies: 16
Views: 8419

Re: 5 Vref

The WBO2 sensors are going to be hogs, but aren't they and their controllers 12v? If these are 14point7 SLCs, they're either self-powered, or you've got so many they should be in a box with their own power supply! Same with the IOx; it should have its own on-board regulator. The hall sensors will pr...
by dontz125
Tue Feb 13, 2018 4:04 pm
Forum: I/O Extender
Topic: 5 Vref
Replies: 16
Views: 8419

Re: 5 Vref

The V3.57 uses the same through-hole style voltage regulator as the V3.0; it's the left-most TO220 on the heat sink bar, beside the DB9. L2 is just above the boot header, and comes away easily with a soldering iron, some fresh solder and lots of flux. The IOx processor is the big eater in your list,...
by dontz125
Tue Feb 13, 2018 1:43 pm
Forum: I/O Extender
Topic: 5 Vref
Replies: 16
Views: 8419

Re: 5 Vref

Do you mean the MegaSquirt or the MicroSquirt? The big MS has a voltage regulator rated to 500mA and some pretty serious heat sinking. The uS has a regulator rated for a full amp, but has almost nothing in the way of a heat sink; B&G have recommended that no more than 25mA be used for VRef. If you n...