Eagle_Phoenix

or...........

Eagle_Phoenix

The fuel reading is a resistance variation from v-ref to input ... when it pass a resistance of 111 ohms, then it will keep all the bar-leds off, once the resistance decrease to 11ohms, then it will keep all the turned on bars ... now the variation is 11 ohms to full and 111 ohms to empty 11~111.

Eagle_Phoenix

Now the issue is to create a converter for this stuff as the fuel level sending unit from eclipse is to ground! and honda is a passive resistor from v-ref to input...

Eagle_Phoenix

We could use a digital potentiometer in this 11~111 range ...

Eagle_Phoenix

Using a FET as a variable resistor?

Eagle_Phoenix

I GOT IT! IT IS WORKING PERFECTLY ... GREAT!!!! WITH THIS CIRCUIT YOU CAN CONVERT THE FUEL GAUGE TO WORK WITH MITSUBISHI ECLIPSE 1995 TURBO OR EAGLE TALON FUEL LEVEL SENDING UNIT TO WORK PERFECT ON CLUSTER FOR FUEL LEVEL MEASUREMENT ...

kingteg

iTrader: (1)

Now this thread right here is what Im talking about. Solid state construction, advance electrical, controlled area networkings. Very nice my friend. I have an extensive electrical background, however I am not an engineer nor do I have a direct degree in the field. Despite this, I am a technician for Honda and specialize in this, even tho it isnt as used as theory for diaganosis as much as other things, but I take this on the side. I understand everything written here and like this whole outfit you have. I have my own set of solid state and can bus projects I fool with. As a fellow enthusiast, I commend you. gl

Eagle_Phoenix

Thanks kingteg ....

I am working hard into the mitshubishi inputs in order to finish this soon! today I am going to put back the cluster into place and link the wires for the first test!

Eagle_Phoenix

Ahhhhh Gosh! this could be easier, greedy Japanese Honda .... even the tachometer will need a converter to work on 2G DSM 1995 Eclipse turbo .... this is like a pain on sssssssss, I am tired to create "this converters".

Eagle_Phoenix

Now lets study the "S2000 AP2 2007 TACHOMETER SIGNAL" and create a converter for it as we did for fuel level sending unit of Mitsubishi Eclipse 2G Turbo 1995.

Eagle_Phoenix

There we are ..........

Lets start with the input.

Eagle_Phoenix

It seems that it is not 12volts as I thought, this circuit diagram that is for honda s2000 ap2 from 2006-2008 clear state it is a 5v on collector of a transistor that generate the captured frequency of ignition coil, it has 4 coil for every cylinder, does somebody knows the sequence for firing order of this stuff?

kingteg

iTrader: (1)

99percent of any reference or signal reference from these ecu's is about 5v. As far as the signal pulse, I've never gone too deep on the s2k like that. I have one too but I don't have much time. Perhaps during the week I can bring the Fluke home and see the pulse width signal @ the pcm side terminals up to the cluster if you haven't already got it (if you talking about the tach. Did you mean in your question that you want the firing order of the motor?

Eagle_Phoenix

I am a bit confused as on drawing it shows 4 pnp transistors for the "Dwell" control on coils, so my confusion is that, is the tach based on wasted spark, I mean for example 1-4 and 2-3 .... or is it 1-2-3-4 separated frequency? if that is the case then it will receive 4 pulses ... I mean 1 pulse for every spark, if that is the case, I will need to program another pic16f88 with adjustments to count the dwell pulses and multiply it or divide it into numbers until it shows the proper tachometer signal.... adjusting it with division or multiplication in order to show me the real rpm on cluster in relation to engine.

The speedometer also will need the "speedometer counter, divider or multiplying to correct it", I used a sound card based signal generator and in this video, I found that it is 2.830 hz square wave with amplitude of 5volts that will show on speedometer 100kmp\h on division per 10kmp\h we find out it is 28 pulses per 10kmp\h then my idea will be to find out the data of original 2g dsm mitsubishi eclipse 1995 and adjust the dip switch with the proper conversion.

Here bellow is a video I've done to show the speedometer signal, also the maximum the cluster can show is 300kmp\h.

God bless ya!

Eagle_Phoenix

Keep on mind my cluster is a 2007, the pinouts are different from the 2003 to 2004 or 2005, also it is a different sort of colors codes the second plug "B" has 2 separate V-refs ... one for fuel gauge that is already explained before and another vref for the external temperature sensor!

My other doubt is ... what is the range of front bumper resistance "thermistor", I need to know some reference ... for resistance, then I can use many pots or variable resistors in order to adjust the temp with resistance, then .... sorting out the ambient outside temperature function on cluster.


My other job will be to sort out the coolant temp sensor that works on canbus, I've done already a converter using the same tranceiver from cluster, using a mc33290 tranceiver .... and a mcu (processor) and found the pinouts responsible for canbus communication,

11A=ISO-KLINE CANBUS INPUT

17A= MCU COMPUTER AND K-LINE GROUND (-) BLACK


But still havent finished the canbus code and how the messages are related ... because it is a separate module from the cluster that does the a\d ... and the s2000 cluster on ap2 year 2007 has two coolant sensors to read the temperature on car.

So originally the cluster reads 2 coolant ct sensors to the engine separate module from the cluster A\D and then the Engine ECU convert the read temperature into can messages that only the cluster can receive .... on A11 Iso-Kline entrance on cluster to communicate .... turning on the led bars for the coolant....

Also I am suspecting the "check engine warning light also is controlled by can messages, when there is a problem on engine, the engine ecu decides to send a message to cluster to turn on the warning light.

Today maybe I will post something again in regarding the tachometer, I am trying to make that converter to signal and see waht we can find, as I've tested straight away the signal from the original cluster of my eagle talon for original cluster and it does not even shows nothing happen! completely dead!

Eagle_Phoenix

I found that the 11A=ISO-KLINE CANBUS INPUT testing the Mc33290 pinout for Iso K-Line on pinouts of cluster as none documents on manuals I've ordered mentioned properly what was the canbus input for this cluster model 2007.

Eagle_Phoenix

Testing straight away what is the input for this cluster using a multi-meter, straight from pinout "4" of mc33290 I found the input on "A11" socket pin going to mc33290 that further flows to txcan and rxcan goes to the cluster mcu on another illustration .... here posted!

This is the precise hardware info ... later on, I will put the converter I used an external mcu to make the A\D sense to coolant and to send messages processed in this A\D, sending through a hardware I've made with Mc33290 that is linked to input "A11" - Mc33290- pin 4" processing to cluster Mcu on canbus ports Hrxd1 and Htxd1, thus enabling the bar-led-on on cluster for coolant temperature measured ......................

GOSHHHHHHHHHHH IT IS COMPLICATED! HERE BELLOW IS THE CLUSTER MCU FOR THIS HONDA S2000 AP2 YEAR MODEL 2007 WITH EXTERNAL AMBIENT TEMPERATURE MEASUREMENTS ..... 6432639-M CLUSTER MCU, I GOT THE DOCUMENTATION ALSO FOR THAT MCU IN ORDER FOR WE TO FINISH WHAT MUST BE MESSAGES LAYOUT WAY ...

Eagle_Phoenix

Eagle Phoenix From Ashes!

Eagle_Phoenix

After years thinking how it must be the circuit that will receive the messages from the another mcu to control the coolant, I developed this circuit, based on what was used on cluster diodes and resistors on the own cluster and studying it and comparing with the datasheets of Mc33290 mcu around the internet downloaded documents.

This is the precise hardware that will link the mcu that will read the temperature A\D process it into can messages and sensing it to mc33290 into input "pin 4" of this tranceiver as illustrated ..........

Eagle_Phoenix

But now lets move into the "Tachometer Converter stuff" in order to see how near it will show the read converter voltage straight from Eagle Talon 1995 turbo to this cluster simply converting the voltage level with a diode to protect the interference, some resistors and a transistor BC337 to switch the voltage level... First I will try only using this, later ... I will make a precise converter board using "lm2937et" to step down the voltage of 12vdc to 5vdc and a protect zener diode of 5.1v to protect the tachometer input on cluster to not burn the chip as it is developed to work with 5volts frequency input and this resistor to voltage decreasing is not very thrusting.

Eagle_Phoenix

We are going to use a bc337 in order to make the switching and lets see what will happen, I am going to make a video and post it here!

Eagle_Phoenix

There we are, there is nothing else good than see what you thought working perfect ... I managed to make successfully a rpm\tach converter from Eagle Talon Turbo 1995 to Honda S2000 Ap2 2007 cluster perfect adjustable, functional and working 100% great!

I worked based on bc337, used one 1n4004 diode for avoiding reverse interference, two pots and some resistors to make the circuit stable.

All you need to do is to put the negative point of multimeter on ground and the positive on "s2000 tachometer output" and adjust the pots to make it 5.2 to 5.4v .... the led is to make sure there is voltage flowing, you may see it blinking when the tach input on transistor base switch the voltage to ground on relation to pulse received from DSM input into a resistor of 1k to bc337 base.

The result could not be different, I've made now a video recording the perfect functioning of this tachometer rpm converter and the video is here bellow.

Eagle_Phoenix

Eagle_Phoenix

YEAHHHHHHHHHH IT IS WORKING

Eagle_Phoenix

GREAT!

Now lets move into the bulbs, constant 12vdc+, ignition switched on ... and the ground converter for some bulbs that need ground and other that need a positive signal from 12vdc+ battery to turn on the bulb or turn off as warning .... maybe today I will put the pinouts for that and the circuitry using again resistors and transistors to switch the ground "npn" and to switch the positive "pnp".