Post by thread:[PIC]:EFI Controller

does that mean PICs are unsuitable for this purpose? -----Original Message----- From: pic microcontroller discussion list [spam_OUTPICLISTTakeThisOuTMITVMA.MIT.EDU]On Behalf Of Andrew Warren Sent: Tuesday, May 25, 2004 11:44 AM To: .....PICLISTKILLspam@spam@MITVMA.MIT.EDU Subject: Re: [PIC]: Nikhil Praveen <PICLISTKILLspammitvma.mit.edu> wrote: > Hi everyone, has anyone tried building an EFI controller (to control > fuel and/or ignition) for any car using any PIC chip? Fuel is difficult, although some of the newer PICs might be up to the task. Most people use higher-powered microprocessors for fuel-injection management. Ignition is easier; PICs are in the ignition controllers from Crane Cams, Jacobs Electronics, and probably others. -Andy === Andrew Warren -- .....aiwKILLspam.....cypress.com === Principal Design Engineer === Cypress Semiconductor Corporation === === Opinions expressed above do not === necessarily represent those of === Cypress Semiconductor Corporation -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email EraseMElistservspam_OUTTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body ___________________________________ Telecom disclaimer can be found at: Http://http://www.telecomfiji.com.fj/disclaimer.htm ------------------------------------------------------------------------- This e-mail message has been scanned and cleared by Trend Micro InterScan ------------------------------------------------------------------------- -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listservspam_OUTmitvma.mit.edu with SET PICList DIGEST in the body

>-----Original Message----- >From: Dave King [KILLspamKingDWSKILLspamSHAW.CA] >Sent: 25 May 2004 03:20 >To: RemoveMEPICLISTTakeThisOuTMITVMA.MIT.EDU >Subject: Re: [PIC]:EFI Controller > > >I've been puttering on converting the megasquirt efi over to >pic. I was using the 877A to replace the Motorola. I need a >controller that handles aircooled engines much better than the >stock MS does and use barometric sensing and egt probes. > >Dave > > I had simmilar thoughts, although I think an 18F would be a more suitable candidate. Probably more worthwhile getting fammilar with the Motorola code and modifying the original code though. At least existing owners could benefit from that changes. Regards Mike ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. ======================================================================= Any questions about Bookham's E-Mail service should be directed to spamBeGonepostmasterspamBeGonebookham.com. -- http://www.piclist.com hint: To leave the PICList TakeThisOuTpiclist-unsubscribe-requestEraseMEspam_OUTmitvma.mit.edu

> I had simmilar thoughts, although I think an 18F would be a > more suitable > candidate. Probably more worthwhile getting fammilar with > the Motorola code > and modifying the original code though. At least existing > owners could > benefit from that changes. > > Regards > > Mike I have a MS2.0 sitting on the desk but it won't do what I need it to do without a lot of changes to the board. It's just not that optimal for an air-cooled engine. Bruce and Al have done a great job on it regardless. The only compiler I had for Motorola was Code Warrior and I just can't wrap my had around using that thing. So I'd rather start fresh with a pic and use Hi-tech. Dave -- http://www.piclist.com hint: To leave the PICList RemoveMEpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu

Nikhil Praveen <PICLISTEraseME.....mitvma.mit.edu> wrote: > does that mean PICs are unsuitable for this purpose? Probably, yeah. Ideally, you'd want a fast microprocessor with powerful timers, a large memory space accessible through an external address/data bus, analog inputs, maybe an analog output or two, etc. Motorola and Intel, among others, have micros that were specifically designed for automotive engine-management applications; you may have better luck with one of those than with a PIC. -Andy === Andrew Warren -- EraseMEaiwcypress.com === Principal Design Engineer === Cypress Semiconductor Corporation === === Opinions expressed above do not === necessarily represent those of === Cypress Semiconductor Corporation -- http://www.piclist.com hint: To leave the PICList RemoveMEpiclist-unsubscribe-requestEraseMEEraseMEmitvma.mit.edu

The days of firing the spark plug once in a while and changing the mixture while monitoring engine temperature is gone. We have just released a C compiler for a peripheral processor that is part of a multiprocessor controller used in automotive engine controllers. The processor tools that we did was for the part that talks directly to spark, injectors, intake and exhaust valving. Increasing attention to fuel efficiency means that the engine controllers are adjusting mixture in some cases every 3 microseconds during intake with separate profiles per cylinder. The peripheral processor has two identical execution engines (One application program, interesting software) a mac, 24 bit word, 4 timers per pin (32 I/O pins) and a hardware real time executive. The hardware is essentially a thread machine architecture. Each of these processors can run multiple PID loops. To complete the engine control there is a host processor on the same die that feeds setpoints and gets performance information to the peripheral processors. The combination has the computing power of a good laptop. w.. Andrew Warren wrote: {Quote hidden}> > Nikhil Praveen <RemoveMEPICLISTspam_OUTKILLspammitvma.mit.edu> wrote: > > > does that mean PICs are unsuitable for this purpose? > > Probably, yeah. Ideally, you'd want a fast microprocessor with > powerful timers, a large memory space accessible through an > external address/data bus, analog inputs, maybe an analog output > or two, etc. > > Motorola and Intel, among others, have micros that were > specifically designed for automotive engine-management > applications; you may have better luck with one of those than > with a PIC. > > -Andy -- http://www.piclist.com hint: To leave the PICList RemoveMEpiclist-unsubscribe-requestTakeThisOuTspammitvma.mit.edu

I have a friend that just bought a 2004 GMC 2500 diesel pickup. The engine controller uses a 32-bit microprocessor, and they use that as a selling point. When I first heard that I thought man, throwing a spark and a squirt of fuel in a cylinder is getting more complex nowadays. I'm sure that the new 2005 emissions regulations in the US have something to do with that. Regards, Bob > powerful timers, a large memory space accessible through an > external address/data bus, analog inputs, maybe an analog output > or two, etc. -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestspamspamBeGonemitvma.mit.edu

And diesel engines does not even need sparks. ----- Original Message ----- From: "Bob Japundza" <RemoveMEpiclistKILLspamMAIL.CSCAPE.NET> To: <PICLISTSTOPspamspam_OUTMITVMA.MIT.EDU> Sent: Tuesday, May 25, 2004 5:21 PM Subject: Re: [PIC]:EFI Controller > I have a friend that just bought a 2004 GMC 2500 diesel pickup. The engine controller uses a 32-bit microprocessor, and they use that as a selling point. When I first heard that I thought man, throwing a spark and a squirt of fuel in a cylinder is getting more complex nowadays. I'm sure that the new 2005 emissions regulations in the US have something to do with that. > > Regards, > Bob > -- http://www.piclist.com hint: To leave the PICList spamBeGonepiclist-unsubscribe-requestSTOPspamEraseMEmitvma.mit.edu

----- From: "Bob Japundza" <piclist@ > I have a friend that just bought a 2004 GMC 2500 diesel pickup. The engine controller uses a 32-bit microprocessor, and they use that as a selling point. When I first heard that I thought man, throwing a spark and a squirt of fuel in a cylinder is getting more complex nowadays. I'm sure that the new 2005 emissions regulations in the US have something to do with that. > > Regards, > Bob Actually, you seem to be overlooking the fact that a DIESEL engine does not even require a spark. To the best of my knowledge even the "squirt of fuel" is a mechanical function carried out by the diesel injection pump, the timing of which must be at an exact point in the pistons compression stroke. So basically the on-board computer has little to do with running the engine on a diesel. $.02KF4HAZ - Lonnie -- http://www.piclist.com hint: To leave the PICList KILLspampiclist-unsubscribe-requestspamBeGonemitvma.mit.edu

any website where we could view this... -----Original Message----- From: pic microcontroller discussion list [EraseMEPICLISTEraseMEMITVMA.MIT.EDU]On Behalf Of Walter Banks Sent: Wednesday, May 26, 2004 7:35 AM To: @spam@PICLIST@spam@spam_OUTMITVMA.MIT.EDU Subject: Re: [PIC]:EFI Controller The days of firing the spark plug once in a while and changing the mixture while monitoring engine temperature is gone. We have just released a C compiler for a peripheral processor that is part of a multiprocessor controller used in automotive engine controllers. The processor tools that we did was for the part that talks directly to spark, injectors, intake and exhaust valving. Increasing attention to fuel efficiency means that the engine controllers are adjusting mixture in some cases every 3 microseconds during intake with separate profiles per cylinder. The peripheral processor has two identical execution engines (One application program, interesting software) a mac, 24 bit word, 4 timers per pin (32 I/O pins) and a hardware real time executive. The hardware is essentially a thread machine architecture. Each of these processors can run multiple PID loops. To complete the engine control there is a host processor on the same die that feeds setpoints and gets performance information to the peripheral processors. The combination has the computing power of a good laptop. w.. Andrew Warren wrote: {Quote hidden}> > Nikhil Praveen <spamBeGonePICLISTKILLspammitvma.mit.edu> wrote: > > > does that mean PICs are unsuitable for this purpose? > > Probably, yeah. Ideally, you'd want a fast microprocessor with > powerful timers, a large memory space accessible through an > external address/data bus, analog inputs, maybe an analog output > or two, etc. > > Motorola and Intel, among others, have micros that were > specifically designed for automotive engine-management > applications; you may have better luck with one of those than > with a PIC. > > -Andy -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestspam_OUTmitvma.mit.edu ___________________________________ Telecom disclaimer can be found at: Http://http://www.telecomfiji.com.fj/disclaimer.htm ------------------------------------------------------------------------- This e-mail message has been scanned and cleared by Trend Micro InterScan ------------------------------------------------------------------------- -- http://www.piclist.com hint: To leave the PICList TakeThisOuTpiclist-unsubscribe-request.....TakeThisOuTmitvma.mit.edu

On 25 May 2004 at 15:32, Falcon Wireless Tech Support wrote: > ----- From: "Bob Japundza" <piclist@ > > > I have a friend that just bought a 2004 GMC 2500 diesel pickup. The > engine controller uses a 32-bit microprocessor, and they use that as a > selling point. When I first heard that I thought man, throwing a > spark and a squirt of fuel in a cylinder is getting more complex > nowadays. I'm sure that the new 2005 emissions regulations in the US > have something to do with that. > > Regards, > Bob > > Actually, you seem to be overlooking the fact that a DIESEL engine > does not even require a spark. To the best of my knowledge even the > "squirt of fuel" is a mechanical function carried out by the diesel > injection pump, the timing of which must be at an exact point in the > pistons compression stroke. So basically the on-board computer has > little to do with running the engine on a diesel. > > $.02KF4HAZ - Lonnie > I understand some new diesels are "direct inject", which means they use electro-mechanical injectors to squirt the diesel directly into the cylinder. The timing then becomes just as critical as it is with a spark ignited petrol engine. The fuel metering is obviously just as important too, so the ECU would have pretty much the same amount of work to do as in a petrol engine. $0.02 (times 0.62 for current exchange rate ;-)) Brent -- Brent Brown, Electronic Design Solutions 16 English Street, Hamilton, New Zealand Ph/fax: +64 7 849 0069 Mobile/txt: 025 334 069 eMail: TakeThisOuTbrent.brownKILLspamspamclear.net.nz -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestRemoveMEmitvma.mit.edu

I thought ALL diesels were "direct inject"!!!!!! If you didn't direct inject, how on earth would you control the timing of "ignition" (flashpoint of the fuel)!! FYI! ;-) Dennis Brent Brown wrote: {Quote hidden}>On 25 May 2004 at 15:32, Falcon Wireless Tech Support wrote: > > > >>----- From: "Bob Japundza" <piclist@ >> >> >> >>>I have a friend that just bought a 2004 GMC 2500 diesel pickup. The >>> >>> >>engine controller uses a 32-bit microprocessor, and they use that as a >>selling point. When I first heard that I thought man, throwing a >>spark and a squirt of fuel in a cylinder is getting more complex >>nowadays. I'm sure that the new 2005 emissions regulations in the US >>have something to do with that. > > Regards, > Bob >> >>Actually, you seem to be overlooking the fact that a DIESEL engine >>does not even require a spark. To the best of my knowledge even the >>"squirt of fuel" is a mechanical function carried out by the diesel >>injection pump, the timing of which must be at an exact point in the >>pistons compression stroke. So basically the on-board computer has >>little to do with running the engine on a diesel. >> >>$.02KF4HAZ - Lonnie >> >> >> > >I understand some new diesels are "direct inject", which means they use >electro-mechanical injectors to squirt the diesel directly into the cylinder. The >timing then becomes just as critical as it is with a spark ignited petrol engine. >The fuel metering is obviously just as important too, so the ECU would have >pretty much the same amount of work to do as in a petrol engine. > >$0.02 (times 0.62 for current exchange rate ;-)) > >Brent > >-- >Brent Brown, Electronic Design Solutions >16 English Street, Hamilton, New Zealand >Ph/fax: +64 7 849 0069 >Mobile/txt: 025 334 069 >eMail: RemoveMEbrent.brownspamBeGoneclear.net.nz > >-- >http://www.piclist.com hint: To leave the PICList >spamBeGonepiclist-unsubscribe-request@spam@spam_OUTmitvma.mit.edu > > > -- http://www.piclist.com hint: To leave the PICList TakeThisOuTpiclist-unsubscribe-requestspammitvma.mit.edu

On 25 May 2004 at 17:38, DJMurray wrote: > I thought ALL diesels were "direct inject"!!!!!! If you didn't direct > inject, how on earth would you control the timing of "ignition" > (flashpoint of the fuel)!! > > FYI! ;-) > Dennis Oops, of course :-) I may have been getting my wires crossed with direct inject petrol. The point remains the same though, electronically injected diesels reqiure just as much CPU control of timing even though they don't spark plugs. -- Brent Brown, Electronic Design Solutions 16 English Street, Hamilton, New Zealand Ph/fax: +64 7 849 0069 Mobile/txt: 025 334 069 eMail: brent.brownEraseMEclear.net.nz -- http://www.piclist.com hint: To leave the PICList RemoveMEpiclist-unsubscribe-requestEraseMEspam_OUTmitvma.mit.edu

In the diesel parlance: "indirect injection" means injecting into a small pre-chamber which is vented into the remainder of the combustion chamber. Old technology, but very well tested and durable. A "direct injection" diesel has no pre-chamber. Direct injected diesels are typically more efficient but much louder. The newer "common-rail direct injected" diesels use extremely high pressures and fine nozzles to ignite the fuel more slowly thus reducing the knock. Usually the fuel is injected in several spurts. A very small leading pilot squirt quietly gets the charge hot enough to efficiently burn the following spray as it comes out. This further reduces the tendency for the fuel to explode all at once. ...Alan {Original Message removed}

> Actually, you seem to be overlooking the fact that a DIESEL > engine does not > even require a spark. > To the best of my knowledge even the "squirt of fuel" is a mechanical > function carried out by the diesel injection pump, the timing of > which must > be at an exact point in the pistons compression stroke. > So basically the on-board computer has little to do with running > the engine > on a diesel. > > $.02KF4HAZ - Lonnie Good point, and with reference to that vehicle you are absolutely correct. However, the days of mechanical injection with Diesel's is on it's way out. Many smaller diesel engines, specially in Europe, no longer use mechanical injectors, they use electrically activated injectors. Still no spark plug needed though of course... TTYL ---------------------------------- Herbert's PIC Stuff: http://repatch.dyndns.org:8383/pic_stuff/ -- http://www.piclist.com hint: To leave the PICList @spam@piclist-unsubscribe-requestRemoveMEEraseMEmitvma.mit.edu

Have a look at http://www.jefferies-au.org/my16m/index.htm It describes an Atmel based replacement for the Weber Marelli 16M ECU as used on fuel injected Moto Guzzi motorcycles, a good informative site with photos and plenty of supporting data. Nigel Duckworth Nikhil Praveen <EraseMEPICLIST@spam@mitvma.mit.edu> wrote: > Hi everyone, has anyone tried building an EFI controller (to control > fuel and/or ignition) for any car using any PIC chip? -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

>-----Original Message----- >From: Nigel Duckworth [@spam@nduckworthspam_OUT.....COMPUSERVE.COM] >Sent: 26 May 2004 08:04 >To: spamBeGonePICLISTEraseMEMITVMA.MIT.EDU >Subject: Re: [PIC]:EFI Controller > > >Have a look at http://www.jefferies-au.org/my16m/index.htm > >It describes an Atmel based replacement for the Weber Marelli >16M ECU as used on fuel injected Moto Guzzi motorcycles, a >good informative site with photos and plenty of supporting data. > >Nigel Duckworth Broken link, it's case sensitive. Thank for posting it though, very interesting. http://www.jefferies-au.org/My16M/index.htm Regards Mike ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. ======================================================================= Any questions about Bookham's E-Mail service should be directed to postmasterspamBeGonebookham.com. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

On Wed, May 26, 2004 at 12:47:29PM -0300, Future wrote: > I can4t believe a 10mips (18f452@40mhz) processor is too slow to do fuel > and spark management. > > Maybe it will not be the best solution, but will always be better than any > carburetor. > Just as a point of reference, GM cars in the late 80's early 90's used a Motorola 68HC11F1 (ish) processor, with interrupts going every 6.25ms for firing injectors, and larger calculations every 16 interrupts. I'm not sure about the speed they were running at though. I think an 18F452 would be enough to run a fuel injected setup with some additional A/D peripherals. This schematic is for the 749 ECM which is a 2bar version of the 730 ECM that was used in almost every GM multiport fuel injected setup from 86-92: http://www.cruzers.com/~ludis/1227749schematic.html -- Alex Harford http://www.alexharford.com .....alex-spam@spam@EraseMEalexharford.com Tel: (604) 738-5674 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

At 12:47 PM 5/26/2004 -0300, Future wrote: >I can4t believe a 10mips (18f452@40mhz) processor is too slow to do fuel >and spark management. > >Maybe it will not be the best solution, but will always be better than any >carburetor. The controller in my car, operates over about a 1 hz loop. It's hunting up and down, never stable. (judging by the O2 sensor voltage) Even at 10,000 RPM, that's 166 Rev/sec, so I don't see what the computational problem would be. Pics aren't wonderful with ints, but still.. That's just not that much activity. Figure four sparks per cycle, 664 sparks, or twice that if you use four coils and "wasted spark". I'd figure two ISRs for ignition timing, and the rest done in non-critical time. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> Just as a point of reference, GM cars in the late 80's early 90's used a > Motorola 68HC11F1 (ish) processor, with interrupts going every > 6.25ms for firing > injectors, and larger calculations every 16 interrupts. > > I'm not sure about the speed they were running at though. > > I think an 18F452 would be enough to run a fuel injected setup with some > additional A/D peripherals. > > This schematic is for the 749 ECM which is a 2bar version of the > 730 ECM that > was used in almost every GM multiport fuel injected setup from 86-92: > > http://www.cruzers.com/~ludis/1227749schematic.html Hello, that link doesn't appear to be working, any chance you have another source for that schematic? Thanks, TTYL ---------------------------------- Herbert's PIC Stuff: http://repatch.dyndns.org:8383/pic_stuff/ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

On Wed, May 26, 2004 at 01:36:34PM -0400, Herbert Graf wrote: > > > > http://www.cruzers.com/~ludis/1227749schematic.html > > Hello, that link doesn't appear to be working, any chance you have another > source for that schematic? Thanks, TTYL > Hmmm... works for me, but maybe it's cached. Can you get to the main site: http://www.cruzers.com/~ludis/ and click on the "P4 and later ECM/PCM/VCM Crossreference" link? -- Alex Harford http://www.alexharford.com .....alex-spamRemoveMEalexharford.com Tel: (604) 738-5674 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

>-----Original Message----- >From: Bob Japundza [.....piclistSTOPspam@spam@MAIL.CSCAPE.NET] >Sent: 26 May 2004 16:39 >To: PICLISTEraseME@spam@MITVMA.MIT.EDU >Subject: Re: [PIC]:EFI Controller > > >I know that. :) I was speaking in general terms of how >complex EFI systems have gotten in passenger vehicles. > >The particular diesel I mentioned even has a variable vane >turbocharger. I never heard of that before my friend got his truck. > Just to clarify, the vanes on the turbine itself are fixed, the vanes that move are between the volute housing and the turbine. Regards Mike -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

{Quote hidden}>-----Original Message----- >From: David VanHorn [RemoveMEdvanhornspamBeGoneCEDAR.NET] >Sent: 26 May 2004 17:06 >To: spamBeGonePICLISTKILLspam@spam@MITVMA.MIT.EDU >Subject: Re: [PIC]:EFI Controller > > >At 12:47 PM 5/26/2004 -0300, Future wrote: > >>I can4t believe a 10mips (18f452@40mhz) processor is too slow to do >>fuel and spark management. >> >>Maybe it will not be the best solution, but will always be >better than >>any carburetor. > >The controller in my car, operates over about a 1 hz loop. >It's hunting up and down, never stable. (judging by the O2 >sensor voltage) > All closed loop mixture control schemes that use a narrow band oxygen sensor do this. These sensors do not give a linear output voltage with exhaust oxygen content, but switch between rich and lean conditions quite quickly. The only way to have any control is to hunt either side of the rich and lean states. Wideband sensors don't suffer from this problem, but cost considerably more $$$. Regards Mike >Even at 10,000 RPM, that's 166 Rev/sec, so I don't see what >the computational problem would be. Pics aren't wonderful with >ints, but still.. That's just not that much activity. Figure >four sparks per cycle, 664 sparks, or twice that if you use >four coils and "wasted spark". > >I'd figure two ISRs for ignition timing, and the rest done in >non-critical time. I'm pretty sure an 18F series PIC could handle a basic fuel and igntion system with a modicum of optimisation techniques. Tony Nixon's mapped igntion design used a humble 16F84 running at 8MHz, all operations obviously performed with software counters. Jaycar are still selling the kit so it must have worked pretty well. With the multiple CCP modules in the larger 18F parts, a considerable overhead would be removed in measuring periods for ignition and injection calculations. Regards Mike -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> On Wed, May 26, 2004 at 01:36:34PM -0400, Herbert Graf wrote: > > > > > > www.cruzers.com/~ludis/1227749schematic.html > > > > Hello, that link doesn't appear to be working, any > chance you have another > > source for that schematic? Thanks, TTYL > > > > Hmmm... works for me, but maybe it's cached. > > Can you get to the main site: http://www.cruzers.com/~ludis/ > > and click on the "P4 and later ECM/PCM/VCM Crossreference" link? I guess the site was down last I looked, it is working now. Thanks, TTYL ---------------------------------- Herbert's PIC Stuff: http://repatch.dyndns.org:8383/pic_stuff/ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads