rayhall
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Posts posted by rayhall
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info about AIM 3.2 – RS232 – Serial protocol
The data stream is standard RS232 at 19200,n,8,1. It consists of a number of short packets. Packets are sent on 10 ms ticks. Note that this does not mean that there is a packet sent every 10 ms tick – there is a pattern which repeats once a second to achieve the channel frequencies listed below, and there are some unused ticks where nothing is transmitted. Each packet consists of 5 bytes. The first byte is the channel number, the second is always A3H, the third and fourth are the channel value, high byte first. The fifth is the sum of the preceding four bytes.
I do not know what that protocol is, but will never work with the Vipec. The AIM must request the data stream from the Vipec. It also must decode the Vipec data stream. The adaptor does nothing with the data sent to the dash or from the dash to the Vipec. It just reduces the baud rate from 56700 to 19200, as the AIM will not work with baud rates greater then 38400.
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The baud rate out of the adaptor is 19200. See if there is an option to select the rate. If not ask AIM if they are using 19200.
Ray.
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Another thing to check is to ask AIM if they are communicating at 19200 baud rate.
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Marcel,
You must be using the new adaptor I sent you. The Vipec Software cannot be online at the same time.
Make sure you do not have data stream enabled in the software. The AIM dash requests the data.
If all this is correct, then I do not know what the problem is. You will need to see if the AIM dash is sending the E command when first powered up, then is sending the A command every 20 msec or longer. If this is not happening the Vipec will not send the data.
If the data is being sent and you have the Txd, Rxd and Gnd connected correctly, then they are not decoding the CRC correctly or some other issue.
Ray.
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On the expansion connector you have available,
Volt 2
Temp 3
Plus one digital. I will need to check which one as the manual has a error.
The plugin ECU have 6 x Volt and 6 x Digital inputs. There is no volt 8.
At the moment there is no support for the Nissan AFM, so you can use the wires.
Ray.
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Rather then waiting for Motec to add support for the Vipec data stream, I have made an adaptor like the one for the AIM dash. This takes the Vipec data stream and turns in into the Motec CAN protocol. Motec will make a template so the dash will know which data item is in each channel.
Ray.
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What plugin ECU do you have?
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I will let you all be the judge of that. The power is calulated using,
Number of injectors
Injector size
Injector duty
Air fuel ratio
Engine VE
Ray.
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The VDash software is almost ready. I will try to finish it off in the next few days. Here is a screen shot of what the program looks like. http://www.vi-pec.com/software/VDashScreenShot.png
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Might be a good idea to ammend page 12 of the manual for this board. As it does state the ANVolt inputs can be used for a boost control knob.
Ahaaa..that is a different thing then a boost switch. Yes you can use a volt input to vary the boost. I guess if you setup the boost control table with just two Y axis values the volt input would be like a switch.
Ray.
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The electronic throttle control is undergoing testing at the moment. As soon as I have something concrete, I will post it here.
Ray.
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only have An volt inputs 10 & 11 available , and the CLC uses inputs 1 to 8
Marcel,
Any volt input can be used for wideband or narrow band. For narrow band select "voltage 0-5"
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Thanks Ray , but would I also need a cal table to use this ? I hope not . because I am out of cal tables !!!!
If the fuel sensor signal is linear in relation to the amount of fuel in the tank, then you can use Cal 5, 6 or 7.
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You cannot use Volt inputs to control the boost switching. As JMP said you use a digital.
Here is how you set it up,
1. Select the Digital input as "GP Input".
2. Select Multiple Boost tables under boost control.
3. Select the Table 2 activation as the digital input.
Ray.
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Yes I am agreeing with ashman.
This is the setup...
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Marcell,
By adding a pullup resistor to that wire, the V88 will be able to read a voltage value based on the fuel level.
The fact the other side of the sensor is going to chassis ground will not be a problem, as you will be scaling the sensor in so it reads correct.
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The adaptor was shipped today.
Ray.
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Right now I'm waiting on the cable from Rayhall (We just ordered it today).
No sign of any order on my end...
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The bottom port is RS232. It may be marked CAN Bus, but is a three wire RS232 (TxD, RxD, Gnd).
We have a cable for this port that is different to the USB cable. It uses the shield wire for the shield, and has a yellow (TxD), Grey (RxD) and Brown (Gnd) wires.
As you do not have this cable, it is possible to modify the USB cable you have to make it into serial and use in the bottom port. To do this you follow the above information. As I said it is not the best solution, but will get you communicating using Serial (RS232).
Ray.
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The bottom port that is marked CAN Bus, is a serial port. To connect to this port we have a cable available. It is possible to modify the USB cable that is supplied with the Vipec. This is how it is done. While not the best solution, it will work.
Also here is the pinout of the CAN Bus port.
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Yes I make the AIM dash Interface. I have them in stock. I can ship one on Monday if I get an order from Jay.
Ray.
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I will see what can be done so the diagnostic light output sends limit errors.
Ray.
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The V44 has antilag with all the features like rotational idle.
Mode 2 for Launch control allows you to use speed and external switch for control.
Example of how to setup the launch control:
If you want a 5700 rpm launch, then put 5700 rpm in the 0 kph cell. After that, the clutch would have been released and you have to factor in the amount of tyre slip you want. To do this you first need to find the values for no slip. Put the car in first gear and idle along, then start the logger and accelerate slowly to max rpm. This will give you the non slip values to put in the table. The values for the high rpm should have about 10% wheel slip added. To do this use this formula to work out how much extra engine RPM will give you the 10% at the wheels.
Example at 40 kph you have 5000 RPM
Diff Ratio = 3.5
First Gear Ratio = 3.0
5000 / (3.5 + 3.0) = 769 "wheel rpm"
769 / 10 = 79 "10%"
(769 + 79) * (3.5 + 3.0) = 5512 is the rpm to put in the table at 40 kph for 10% slip.
At low speeds you may need at least 40% so the car launches and does not bog down.
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Some wide band controllers output both wide and narrow band signals. The Innovate LC1 has this feature. I use one on my car and use both signals as I need them, as they go to separate volt inputs.
I do not see a software solution being added at the moment to use the wide band signal.
Ray.
Dash for Vi-PEC
in ViPEC V Series
Posted
There is away to confirm the problem is at AIM's end.
Use the Windows terminal program or some other terminal software.
Set the baud rate to 19200 8 none 1.
Type the letter C. You should get 23 bytes of data back. Then type A and you will get 107 bytes.
Both the C and the A must be with the caps on.
You will need to connect the Txd, Rxd and ground to a 9 pin connector.