any pectel monitor experts
17-11-2005, 09:31 PM
#42
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well yeah that would work. 
if i remember correctly back to my schooldays, the monitor should effectively have an internal voltage and an internal resistance, so if say the internal voltage is 10v and resistance is 150ohms then when a load of say 150 ohms is applied the voltage at the sender terminal will drop to 5V
also the sender pressure/resistance 'curve' should be a straight line but with the correct data sheets it would be a piece of piss
rudimentary stuff but my brain still hurts
Jon what do your oil and fuel pressures read with no senders connected?
5 and a bit bar? or 15 and a bit bar?
if i remember correctly back to my schooldays, the monitor should effectively have an internal voltage and an internal resistance, so if say the internal voltage is 10v and resistance is 150ohms then when a load of say 150 ohms is applied the voltage at the sender terminal will drop to 5V
also the sender pressure/resistance 'curve' should be a straight line but with the correct data sheets it would be a piece of piss
rudimentary stuff but my brain still hurts
Jon what do your oil and fuel pressures read with no senders connected?
5 and a bit bar? or 15 and a bit bar?
17-11-2005, 09:35 PM
#43
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Nick,
I reverse engineered the monitor software and the title is definitely
in the ROM as ascii code. (on the 4 monitors that I looked at anyway)
As for external sensor scaling, there are numerous versions of the software
and just looked at my old notes and they do not have facilities for this.
Other versions may have !
I reverse engineered the monitor software and the title is definitely
in the ROM as ascii code. (on the 4 monitors that I looked at anyway)
As for external sensor scaling, there are numerous versions of the software
and just looked at my old notes and they do not have facilities for this.
Other versions may have !
17-11-2005, 09:43 PM
#44
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Originally Posted by SECS
Nick,
I reverse engineered the monitor software and the title is definitely
in the ROM as ascii code. (on the 4 monitors that I looked at anyway)
As for external sensor scaling, there are numerous versions of the software
and just looked at my old notes and they do not have facilities for this.
Other versions may have !
I reverse engineered the monitor software and the title is definitely
in the ROM as ascii code. (on the 4 monitors that I looked at anyway)
As for external sensor scaling, there are numerous versions of the software
and just looked at my old notes and they do not have facilities for this.
Other versions may have !
i triple checked the ascii but couldn't see the 'FORD MOTORSPORT BOREHAM' anywhere, will try again.
that answers several questions though...
i will have to decide which monitor to fit in my car before i can buy senders
(but who is nick? ForeigneRS?)
regards
Stu
17-11-2005, 09:44 PM
#45
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p.s. Simon are you still gonna release a new style secs monitor?
does my s8 output pectel style comms on the diagnostic pins of the ecu??
does my s8 output pectel style comms on the diagnostic pins of the ecu??
17-11-2005, 09:48 PM
#46
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Stu, I always get you two mixed up 
Doug Stirling is having the FIRST one fitted to his car very soon for
a trial test period, if his works ok and I can find a suitable distributor,
then I think during February next year looks good for release.
Lots of ifs, but I have learned I need help to do these things
properly from past experience because there is more to getting a
product to market than making it work
Doug Stirling is having the FIRST one fitted to his car very soon for
a trial test period, if his works ok and I can find a suitable distributor,
then I think during February next year looks good for release.
Lots of ifs, but I have learned I need help to do these things
properly from past experience because there is more to getting a
product to market than making it work
17-11-2005, 11:43 PM
#49
Stu - my engine's in bits at the moment so I can't tell you my sensorless readings. I agree that hopefully the pressure/resistance is a straight line, but I'm not going to hold my breath.
PS I don't see that the monitor voltage output to the sensor is relevant ?
Simon - is there any way you can get an S8 to communicate with a Pectel monitor ?
PS I don't see that the monitor voltage output to the sensor is relevant ?
Simon - is there any way you can get an S8 to communicate with a Pectel monitor ?
18-11-2005, 08:06 AM
#52
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if anyone with an eprom burner is running lower than 6.60e software , i have the hex file for 6.60 i can e-mail over,
but my other one which is version 6.52 has no eprom!
sure pectel won't care too much as it's old stuff and they no longer make them
or does anyone with a later version of software have the instruction manual, as that may tell us what the dipswitches do on the later software
i think it's the earlier software in which switch 1 can hold peak readings, we will know if Andreas tells us which version software he has as it's his instructions that claim switch 1 is for peaks.
cheers
but my other one which is version 6.52 has no eprom!
sure pectel won't care too much as it's old stuff and they no longer make them
or does anyone with a later version of software have the instruction manual, as that may tell us what the dipswitches do on the later software
i think it's the earlier software in which switch 1 can hold peak readings, we will know if Andreas tells us which version software he has as it's his instructions that claim switch 1 is for peaks.
cheers
18-11-2005, 08:48 AM
#54
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My picture memory says its a version starting with 3.... but im not 100% on that. Or is it the version of the Ahmed chip that flashes by on startup? 
Can't check my software version in a month as car is locked up at another location.
Can't check my software version in a month as car is locked up at another location.
18-11-2005, 08:49 AM
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Hello mate
what i would like to see is what software version its for (i.e. version number on screen when you power up) together with the page of the instruction manual that says which dipswich does what...
cheers
what i would like to see is what software version its for (i.e. version number on screen when you power up) together with the page of the instruction manual that says which dipswich does what...
cheers
18-11-2005, 09:21 AM
#57
Jano,
That would be great, as it could mean that because we were going from Andreas' manual, we have connected to the wrong dip switch for the peak recall. We connected a toggle switch to dip-switch one, which is supposed to be on for peak reading only off for continuous readings. It has no effect what-so-ever - whereas the one we did for Billabong works perfectly (typical) .
I'll have to check what version mine is, as I can't remember.
That would be great, as it could mean that because we were going from Andreas' manual, we have connected to the wrong dip switch for the peak recall
. We connected a toggle switch to dip-switch one, which is supposed to be on for peak reading only off for continuous readings. It has no effect what-so-ever - whereas the one we did for Billabong works perfectly (typical) .I'll have to check what version mine is, as I can't remember.
18-11-2005, 10:53 AM
#58
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SECS
i guessed that you would have reversed engineered the pectel monitor.
don't suppose that you fancy sharing the monitor to pc rs232 communication protocol?
i guessed that you would have reversed engineered the pectel monitor.
don't suppose that you fancy sharing the monitor to pc rs232 communication protocol?
18-11-2005, 02:09 PM
#59
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also Simon, are the alarm limits changeable in software?, eg from the ascii i see there is a 'WATER TEMP TOO HIGH' and 'EXHAUST TEMP TOO HIGH' etc
that's one way in which your secs monitor is better, the other is the peak storage on screen at the same time as actual readings
that's one way in which your secs monitor is better, the other is the peak storage on screen at the same time as actual readings
19-11-2005, 01:21 PM
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Originally Posted by jon@work
I think an email to VDO may be needed to get the resistance/pressure curves for the different senders.
The only info I have found so far is that the resistance ranges up to about 180 ohms at higher pressure. If you know what your fuel/oil pressure is, say, at idle, it could then be worth having a play with various different resistors to replicate the sender (connect a resistor between the appropriate monitor wire and earth) until the monitor gives close-on to the reading you'd expect ie if at idle your fuel pressure is 60psi, and a resistor of 150 ohms gives a reading of 60 psi on the monitor, it's just a case then of comparing this resistance value to the different sender curves to select the closest one.
If anyone knows the correct sender, or can think of a better/easier way than this, spill the beans.
The only info I have found so far is that the resistance ranges up to about 180 ohms at higher pressure. If you know what your fuel/oil pressure is, say, at idle, it could then be worth having a play with various different resistors to replicate the sender (connect a resistor between the appropriate monitor wire and earth) until the monitor gives close-on to the reading you'd expect ie if at idle your fuel pressure is 60psi, and a resistor of 150 ohms gives a reading of 60 psi on the monitor, it's just a case then of comparing this resistance value to the different sender curves to select the closest one.
If anyone knows the correct sender, or can think of a better/easier way than this, spill the beans.
1 bar @ 20 ohms
3 bar @ 57 ohms
5 bar @ 110ohms
10 bar@ 387ohms
can't find any datasheets on the net
will have a look in the work catalogues next week
19-11-2005, 04:05 PM
#61
Originally Posted by the original
yeah i get
1 bar @ 20 ohms
3 bar @ 57 ohms
5 bar @ 110ohms
10 bar@ 387ohms
can't find any datasheets on the net
will have a look in the work catalogues next week
how exactly did you get/measure the resistance values at those pressures ?
is this the same for both fuel and oil pressure ?
19-11-2005, 04:13 PM
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Yes same for both.
to do it, i connected a 2k2 variable resistor and turned the knob to get the pressure i wanted, then disconnected the resistor from the monitor and measured it with an ohmmeter........
to do it, i connected a 2k2 variable resistor and turned the knob to get the pressure i wanted, then disconnected the resistor from the monitor and measured it with an ohmmeter........
19-11-2005, 04:17 PM
#63
Originally Posted by the original
Yes same for both.
to do it, i connected a 2k2 variable resistor and turned the knob to get the pressure i wanted, then disconnected the resistor from the monitor and measured it with an ohmmeter........
to do it, i connected a 2k2 variable resistor and turned the knob to get the pressure i wanted, then disconnected the resistor from the monitor and measured it with an ohmmeter........
Can you do the same measurements for the other monitor you've got (the one that reads up to 5 bar) and put those values up as well please - I don't know what mine (and other peoples) goes up to, so I/we may need different sensors to you.
19-11-2005, 04:54 PM
#66
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it's fackin freezing out there!
5 BAR VERSION
0 BAR @ SHORT CIRCUIT
1 BAR @ 92 OHMS
2 BAR @ 154 OHMS
3 BAR @ 251 OHMS
4 BAR @ 413 OHMS
5 BAR @ 750 OHMS
6.88 BAR open circuit
5 BAR VERSION
0 BAR @ SHORT CIRCUIT
1 BAR @ 92 OHMS
2 BAR @ 154 OHMS
3 BAR @ 251 OHMS
4 BAR @ 413 OHMS
5 BAR @ 750 OHMS
6.88 BAR open circuit
19-11-2005, 04:59 PM
#67
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by the way i mailed the eprom contents over to FOREIGNERS and he found the startup message within it 
lines 1537 and 1538
so i can change it piece of piss, but i think FORD MOTORSPORT BOREHAM looks ok so i'll leave it for now
lines 1537 and 1538
so i can change it piece of piss, but i think FORD MOTORSPORT BOREHAM looks ok so i'll leave it for now
19-11-2005, 05:21 PM
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p.s a search on pectel reveals this user
https://passionford.com/forum/profil...rofile&u=22158
who claims to live in cambridge and work at pi (formerly pectel) in cottenham nr cambridge
but he hasn't posted since oct 3rd
probably pissed off because, i quote him
"not many friendly people here which is a shame as there is some good info on this site"
if it wasn't a wind-up
https://passionford.com/forum/profil...rofile&u=22158
who claims to live in cambridge and work at pi (formerly pectel) in cottenham nr cambridge
but he hasn't posted since oct 3rd
probably pissed off because, i quote him
"not many friendly people here which is a shame as there is some good info on this site"
if it wasn't a wind-up
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19-11-2005, 05:34 PM
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Originally Posted by DaveEscos
so the EPROM in the monitor.. other that the start up message... what else does it store?
29-11-2005, 07:34 AM
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another question, why does the throttle only go up to 85%??
i have tried two different ECUs and 2 different monitors, so surely it's not me??
does everybodys do it?
thanks
hope to find out about the dipswitches later today
i have tried two different ECUs and 2 different monitors, so surely it's not me??
does everybodys do it?
thanks
hope to find out about the dipswitches later today
30-11-2005, 07:45 PM
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went down to see Jano, although his monitor manual was slightly different to the one from Andreas, it still had 'v2.2 dipswitches- switch 1 on -peak hold' so no further forward
I changed the startup name though
I changed the startup name though
02-03-2006, 10:25 PM
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need to revive this one, i need to know something....
what do you all get on the duty display (usually postion 2) like this
i get 0 with engine off and ALWAYS 95% with engine running
what i would like to know is, if anyone gets anything other than 0 or 95??
especially people with lambda sensor or boost pot fitted
thanks
what do you all get on the duty display (usually postion 2) like this
i get 0 with engine off and ALWAYS 95% with engine running
what i would like to know is, if anyone gets anything other than 0 or 95??
especially people with lambda sensor or boost pot fitted
thanks