DIY - Trip computer
Jan 6, 2010, 04:40 AM
#1
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DIY - Trip computer
As we all know we need free OBD socket for tuning purposes, therefore I have been
looking around for some standalone trip computer that would just plug and play.
I have come across trip-computer from Serg Electronics (Russian).
They have been able to provide one for me with English interface, maybe they can do it also with mpg instead of l/100km, which is frequently used unit in Europe.
What I like about this approach is that you just replace your clock and wire few wires. I have been using it for almost a year now without problems.
Anyway accidentally I have found a schematics that does the same thing but has to be programmed so I have thought it is worth sharing.
MODS, please rearrange if it shall be placed in some other sub-forum, I post mainly here so I thought it will not hurt.
looking around for some standalone trip computer that would just plug and play.
I have come across trip-computer from Serg Electronics (Russian).
They have been able to provide one for me with English interface, maybe they can do it also with mpg instead of l/100km, which is frequently used unit in Europe.
What I like about this approach is that you just replace your clock and wire few wires. I have been using it for almost a year now without problems.
Anyway accidentally I have found a schematics that does the same thing but has to be programmed so I have thought it is worth sharing.
MODS, please rearrange if it shall be placed in some other sub-forum, I post mainly here so I thought it will not hurt.
Last edited by acamus; Jan 6, 2010 at 11:50 AM.
Jan 6, 2010, 07:18 AM
#2
Neat little unit.
USD Price equivalent is ~$87: http://www.google.com/search?hl=en&r...&aq=f&oq=&aqi=
Just for reference, here is the translation of the features list:
(via http://translate.google.com/ )
Looks like it adds an audible shift warning, which is pretty sweet.
USD Price equivalent is ~$87: http://www.google.com/search?hl=en&r...&aq=f&oq=&aqi=
Just for reference, here is the translation of the features list:
(via http://translate.google.com/ )
In stock: 1000
Usually ships in:
Quantity:
Parameters of Category:
On-board trip computer version 4.2h SPORTS - TRIP COMPUTER v. 4.2x SPORT
- Measurement of the instantaneous fuel consumption relative to the current engine speed - l / h
- Measurement of the total fuel consumption - l
- Measurement of fuel per 100 km - l/100 km
- Measurement of the average fuel consumption per trip (3 algorithms) - l/100 km
- Precision tachometer - RPM
- Adjustable precision Speedometer - km / h
- Measurement of the average speed for the trip - km / h
- Adjustable high-precision odometer - km
- The estimated value of fuel in the tank - L
- The forecast path of the current balance of fuel - km
- Calculating the cost of fuel consumed per trip (rubles / hryvnia / Euro or U.S. $)
- Calculation of the average value of 100 km ((rubles / hryvnia / Euro or $) per 100 km)
- Measurement of temperature in the cabin and (or) overboard - 0C
- Voltmeter board voltage - In
- Current date and time (HH: MM: SS, DD: month: HS);
- Calendar
- Audio signal exceeding a preset speed (2 door) - for safe driving!
- Audio signal exceeding a preset speed of the engine - for maintaining a gentle mode of the engine
- Contrast and brightness of the indicator (day / night) gives the user (dimmer)
• collects detailed statistics (diary) for 80 trips, including: date and time of commencement of travel, length of visit, time in traffic, fuel consumption per trip, the mileage per trip, average fuel consumption per 100 km per trip, average and maximum speed for the trip, as well as the cost of fuel consumed per trip, all travel is conveniently grouped by date and sequence in a given date, and you can see a summary of the day;
• has a mode of high-precision measurements of acceleration time to the specified speed or a preset distance (mode - SPORT) - to determine the current state of the vehicle;
• has different correction modes: free-path, traffic, fuel consumption, on a float tank sensor, a clock, calendar - to set up BC for a specific vehicle.
Photos of the model number of our devices is available on our
Web site www.tripcomputer.ru
REAL Crisis ACTION!
While others offer to buy - we offer to save!
Board computer version 4.2h SPORTS helps reduce fuel costs by 30% and calculate the actual fuel consumption of your car!
The cost of the acquisition device (gadget) recovered already after 1 month of active service - you just save more!
Just the math!
Crisis - Time management investment finance.
Take advantage of our offer and start saving their money now!
Usually ships in:
Quantity:
Parameters of Category:
On-board trip computer version 4.2h SPORTS - TRIP COMPUTER v. 4.2x SPORT
- Measurement of the instantaneous fuel consumption relative to the current engine speed - l / h
- Measurement of the total fuel consumption - l
- Measurement of fuel per 100 km - l/100 km
- Measurement of the average fuel consumption per trip (3 algorithms) - l/100 km
- Precision tachometer - RPM
- Adjustable precision Speedometer - km / h
- Measurement of the average speed for the trip - km / h
- Adjustable high-precision odometer - km
- The estimated value of fuel in the tank - L
- The forecast path of the current balance of fuel - km
- Calculating the cost of fuel consumed per trip (rubles / hryvnia / Euro or U.S. $)
- Calculation of the average value of 100 km ((rubles / hryvnia / Euro or $) per 100 km)
- Measurement of temperature in the cabin and (or) overboard - 0C
- Voltmeter board voltage - In
- Current date and time (HH: MM: SS, DD: month: HS);
- Calendar
- Audio signal exceeding a preset speed (2 door) - for safe driving!
- Audio signal exceeding a preset speed of the engine - for maintaining a gentle mode of the engine
- Contrast and brightness of the indicator (day / night) gives the user (dimmer)
• collects detailed statistics (diary) for 80 trips, including: date and time of commencement of travel, length of visit, time in traffic, fuel consumption per trip, the mileage per trip, average fuel consumption per 100 km per trip, average and maximum speed for the trip, as well as the cost of fuel consumed per trip, all travel is conveniently grouped by date and sequence in a given date, and you can see a summary of the day;
• has a mode of high-precision measurements of acceleration time to the specified speed or a preset distance (mode - SPORT) - to determine the current state of the vehicle;
• has different correction modes: free-path, traffic, fuel consumption, on a float tank sensor, a clock, calendar - to set up BC for a specific vehicle.
Photos of the model number of our devices is available on our
Web site www.tripcomputer.ru
REAL Crisis ACTION!
While others offer to buy - we offer to save!
Board computer version 4.2h SPORTS helps reduce fuel costs by 30% and calculate the actual fuel consumption of your car!
The cost of the acquisition device (gadget) recovered already after 1 month of active service - you just save more!
Just the math!
Crisis - Time management investment finance.
Take advantage of our offer and start saving their money now!
Last edited by fostytou; Jan 6, 2010 at 07:23 AM.
Jan 6, 2010, 08:47 AM
#3
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That is pretty neat. Wonder if the company would offer a group buy if several of us were to make the purchase.
Acamus....if we can get our hands on them would you provide the ECU pin outs for us to make install easy ??
Acamus....if we can get our hands on them would you provide the ECU pin outs for us to make install easy ??
Jan 6, 2010, 09:20 AM
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Jan 6, 2010, 10:22 AM
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So battery, ground, dimm and illumination are out of question.
There are three additional wires IIRC to be crimped on the original harness
1. injector signal (any of the four) EVO7 ECU PIN 1/2/4/5
2. vehicle speed signal EVO7 ECU PIN 86
3. fuel level signal - wire running from fuel gauge unit PIN1 to combination meter PIN 51
Last edited by acamus; Jan 6, 2010 at 11:00 AM.
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Jan 6, 2010, 11:18 AM
#8
I'm all about the "REAL Crisis Action!" FYI, Google Chrome with the Google Translate extension is possibly the coolest thing ever for someone who barely remembers his year of Ukrainian lessons in high school, let alone any other languages.
But everyone should just get used to liters and meters, dammit.
(I'll compromise, and won't demand that everyone spell it "litres".) Actually, it looks like the unit handles U.S. currency in it's trip cost calculations, so I'm surprised to not see imperial measurements listed.
More info on their forum as well, it looks like.
That's a very cool little unit; even more-so, given that it simply replaces the clock (and still provides timekeeping). I ran the documentation through Google Translate, which is pretty readable; I was wondering whether the configuration for the fuel level sender was hard-coded for your unit or adjustable, and it looks like it's adjustable. Cool beans.
FYI, Google Chrome with the Google Translate extension is possibly the coolest thing ever for someone who barely remembers his year of Ukrainian lessons in high school, let alone any other languages.But everyone should just get used to liters and meters, dammit.
(I'll compromise, and won't demand that everyone spell it "litres".) Actually, it looks like the unit handles U.S. currency in it's trip cost calculations, so I'm surprised to not see imperial measurements listed.More info on their forum as well, it looks like.
That's a very cool little unit; even more-so, given that it simply replaces the clock (and still provides timekeeping). I ran the documentation through Google Translate, which is pretty readable; I was wondering whether the configuration for the fuel level sender was hard-coded for your unit or adjustable, and it looks like it's adjustable. Cool beans.
Jan 6, 2010, 11:39 AM
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I believe schematics above says it all except for pulse signals scaling. Should not be that hard to figure out with oscilloscope. It was either AVR or PIC based (cant remember now) so reflash should not be that hard.
I am really sorry that I cannot help you more, but I could not find firmware for the schematics above
Maybe some of russian members (e.g. AIK) can arrange imperial units English UI group buy for you.
Last edited by acamus; Jan 6, 2010 at 03:04 PM.
Jan 6, 2010, 12:19 PM
#12
Heh! No, I meant something along the lines of a field reflash by...er..."normal people", not you or me. 
Looking at your schematic and their docs, it looks like the answer is no, but it also looks like they haven't done a firmware update since 2007 anyway, so it probably doesn't matter.
Again, that's a great find. I've sent them an email about an English/imperial (U.S.) version, we'll see if Google translate can do the job.
Looking at your schematic and their docs, it looks like the answer is no, but it also looks like they haven't done a firmware update since 2007 anyway, so it probably doesn't matter.
Again, that's a great find. I've sent them an email about an English/imperial (U.S.) version, we'll see if Google translate can do the job.
Jan 6, 2010, 01:28 PM
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Natasha at their customer service speaks pretty good English
So translation was not necesssary
So translation was not necesssary
