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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: April 25, 2012, 03:47:46 pm »

Yes old Nissan seems to want AC sine

Even though I don't get a smooth sine waveform from Dirk's setup it works. So I guess as long as the signal varies between + and - voltage everything works.
In fact, I requested from Dirk to draw a schematic that will end up at around +-2.5 VAC (the FSM mentioned +- 3VAC to be normal under the troubleshooting/testing section)

I'm sure it would work on +- 1VAC and +-5VAC as well, but 2.5 felt like a good compromise to be sure it would work AND not be harmful for the speedometer
It's just a matter of how much signal is sent to ground so easy to customize.

He had a Nissan 100nx cluster and it used the same signal as the Nissan S13.

I'm so happy this finally works. But I haven't yet tried it with the revmeter running at the same time... that may be another story lol

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: April 23, 2012, 11:20:16 am »

Solution, it was Dirk who took some time to help me. All credits to him!
http://www.youtube.com/user/elektronikjack
http://www.x-simulator.de/wiki/Tacho_Controller_by_Elektronikjack

Here's his schematic:


And here's a sketch I did in Photoshop. This is how I hooked it up:


And finally, though not quite the same resistor values. Here's a simulation I ran in LTSpice that shows what it does:
http://www.youtube.com/watch?v=7MQDsqF-2O0

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: April 18, 2012, 07:20:22 pm »

http://www.youtube.com/watch?v=MpSLtbnGVYM

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: April 03, 2012, 12:54:06 am »

Devs, is it possible to do a speedo sine wave firmware or is the rev burner IC's only capable of square waves?

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: March 27, 2012, 02:40:08 pm »

Just been in contact with Dakota.
They said there product could convert square to sine. I then asked if they are S13 fans themselves and know how its speedo works and I just got this mail:

"Surprisingly, we do have a bit of information on the ’86-92 240SX speedometer: Speedo responded only to AC sine wave input. J"

So, I'll order this unit right away and let you know my findings  

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: March 27, 2012, 09:47:44 am »

Anyone think this unit could solve ALL speedometers problems? As long as the speedo is a electric type speedo.

http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=126/category_id=287/home_id=59/mode=prod/prd126.htm

Consider to get one and try...
questerymj, if you still have max speed issue I guess it would help you too.

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General Discussions / Re: Supported tachometers

« on: March 23, 2012, 03:53:59 pm »

http://dl.dropbox.com/u/23115992/symprojects/bild.JPG

does a connection like that generate the same kind of signal that the revburner does? i've seen that type of schematic more often than "hook to ECU" ones, or is "The Distributor" an ECU lol?
I think I've also seen tachometer install instructions saying hook to coil OR ECU. Just like to pin down if there's any type of criteria I should take into account when buying rev meters or if all of them works as long as they are 4,6 or 8 cylinder and not diesel ones. well, and that they don't rev higher than 17k, 12k or 8k respectively

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General Discussions / Supported tachometers

« on: March 23, 2012, 12:50:02 am »

What does it mean if the tachometer specs says "WILL WORK ON 4, 6, or 8 CYLINDER ENGINES MUST HAVE A DISTRIBUTOR TO USE THESE TACHOMETERS
CAN BE USED WITH HEI, MSD, etc. DISTRIBUTOR IGNITIONS"?

If anyone have got a working tachometer, can you please send a link. I just bought a tachometer and it is either faulty or not supported by revburner

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: March 22, 2012, 09:41:29 pm »

I got an answer on youtube about nissan cluster that I asked about a few days ago:

His answer:
"Hi, i connect the 5V output of the controller chip with a cap and a resistor to gnd. the you get +2.5V to -2.5V AC signal ! look on my wiki, there ist the wiring picture. bye dirk"
However he is not using the revburner, he's a DIY guy:


Any symprojects experts here that could tell if it would be possible to use the revburner S1 signal and somehow get me the AC signal I need? I'd gladly donate if you know a way.. would be sweet to not have to fiddle with fitting the nissan needle and background to a type-r tachometer too

"The type of signal generated by the Rev Burner is a square wave at 12V, whose frequency increases with the speed."

UPDATE:
I did my best on google and as far as I understand a pulse signal... I guess the square wave 12V that the revburner outputs is a 0VDC to 12VDC square wave signal, it has a idle and "on", idle on 0V and "on" at 12V, hence the pulse name I guess?

 I tried LTSpice IV which I haven't used in years
Hooked up the same components like used in schematic above, but I also needed an extra resistor to be able to measure it, I guess it just act as a load?
My electronics skills are VERY noob like. But here's what I got:
http://www.youtube.com/watch?v=7MQDsqF-2O0

However, when pulse frequency change, the sine wave loose it's shape, not that there really was a sine wave in the video below, but most important question. Will it work to get my speedo going? At least it's close to a AC signal with zero DC offset

Since I'm novice when it comes down to this, I appreciate any input. Down want to start a fire...

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: March 22, 2012, 07:16:55 pm »

I can't f**king believe it! I got my tachometer today, one of these:
http://www.realcar.se/presta/product.php?id_product=17513

And guess what? I doesn't work. Light works though, but not the needle.
I'm gonna return it and get a type-r, anyone know a type-r confirmed to work? Plug & Play

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: March 19, 2012, 09:17:39 pm »

To put an end to all this research I'm going to wrap this thread up and say that I'll get me some cheap tachometer and try to fit it in place of the speedometer (a project worth it's own thread lol)...

I think I finally found what an answer that I didn't want to read, yet, I had started to think that's how the S13 speedo works:
"I just looked at the s13 FSM and it shows the speed sensor going directly to the gauge cluster."

Also read that the 2 pulse signal that comes from ECU into the speedo is just a speed limiter, whatever that means. There's also some kind of switch that triggers at above 20km/h... man I'm dizzy researching.

If that is true and you have a look at the pinout notes I've written above.. That means the S13 speedo most probably wants a AC sine wave, FSM mentions pretty low voltage in the up to 1V range. VSS has 2 cables, one for ground and one for signal, but it's AC so I guess it doesn't matter if they're swapped. The VSS sensor is just some kind of HAL (or whatever it is called, those magnetic sensors) rotating and putting out a passive signal to the speedo.

Thanks for all the help and sorry to say I give up. As long as I the speedo going in my cluster I don't care if it's a type-r tach motor instead of the genuine nissan one
I'll go get me a tachometer and post pictures of the disassembly and speedo background fitting, as well as fitting it into the cluster. Bye for now.

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General Discussions / Re: Rev burner can't get top speed in speedo meter

« on: March 19, 2012, 08:57:36 pm »

Do you have a link to the discussion of the guy who make the frequency converter?

Yes, actually just noticed it was for S15 but anyway... the build is here, hope you find it interesting:
http://www.freshalloy.com/forums/showthread.php?t=179595

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: March 19, 2012, 04:43:30 pm »

Maybe these notes I made when looking in the service manual helps. I'll upload more service manual pics in a little while...

S13 CLUSTER SPEEDOMETER
Connects to cluster with 5 bolts:

6 : VSS (Vehicle Speed Sensor)
This is the other cable that hooks to the wheel sensor, I guess it is the + side of the VSS sensor, pretty sure it's a sine AC signal?

7 : 2P (2 pulse signal from ECU?)

12 : GND Common ground for cluster except blinkers indicators.
The VSS (Vehicle Speed Sensor) is grounded here, read about pin 6 too

24 : IGN (+12V)

13 : 10K (Goes to differential oil cooler relay 1)

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General Discussions / Suggested feature for revburner to improve compability with speedometers

« on: March 19, 2012, 10:52:50 am »

Hi!

I guess my Nissan S13 cluster thread has not gone unnoticed
Late yesterday night I got an idea.

Why not do a speedo firmware that DRIVES a TACHOMETER?
That way everyone that experience problems with their speedometers on their clusters can just get a cheap Type-R tachometer, disassemble it and install to their cluster using the speedometer gauge background.

Like this:


Or how does it work? Does the speedometer and tachometer want the same signal already? Then I believe I could just get me a tacometer right away and plug it in to the speedometer firmware board.
Appreciate if any devs could give a comment. Personally I think it's an awesome idea 

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General Discussions / Re: Nissan 200sx s13 ECU controlled cluster, will it work?

« on: March 19, 2012, 10:42:44 am »

Why did I have to get me a S13 cluster...

It's true what you say, every forum I've visited it's always "S13 is a little tricky".
I suggested an improvement to symprojects, or I haven't yet. But I'll post a thread about it in a second so check it out.