ALDL LCD Display

[BennVenn]

Please don't order one of these if you don't know what it is, what it does, or how to install it. Paypal and Shopify don't refund their 'fees' in a cancellation so when you change your mind, it comes out of my pocket.

[BennVenn]

This display is intended for High speed comms from an '808 ecu running OSE$12P. In this mode, you can configure the display to show what you want, any size, color, font you want. See below:

8192Baud_Configurable.PNG (946.66 KiB) Viewed 2728 times

This display also supports 'stock' '808 ECU's which support 160Baud ALDL communications. These include Stock VN/VP/VR(manual) ECUs, astra, pulsar, camira etc... There are 3 modes available for 160Baud. Mode1 (SJ1 jumper soldered): This will only show you Battery voltage and Coolant temp. This can be changed if you modify the source and update your firmware. If you can't code in C, modifying and updating firmware is not for you.

Mode2: (SJ1 and SJ2 soldered). This will show the hex values of the data stream from the ECU. If you know what this means, it might be useful for you. Otherwise, it has no purpose.

Mode3: (SJ1, SJ2 and SJ3 soldered). This will show most of the useful stats from the ECU in somewhat human readable numbers. This is for debugging or testing sensors etc. Not ideal as a regular display due to the extrememly slow data rate that 160baud offers.

Other vechicles: As Antus says a few comments earlier, other High speed comms compatible ECU's will likely work with minimal changes to the CONFIG.TXT file. If you're not confident with text files or the instruction manual, this likely isn't for you.

Wiring: In 8192Baud mode, the LCD will need 5v, gnd, TX and RX from the ECU. If TX & RX are combined in a single wire, and it is a 5v signal, you can connect them both together.
In 160Baud mode, the LCD expects 12v, gnd, and you will need 3 resistors. One 10k resistor on the diag port to instruct the ECU to stream out its ALDL data, and 2 resistors to form a voltage divider to reduce the 12v logic signal to somewhere between 3 and 5volts. A 5k and a 10k resistor will be fine for this. Email/PM me if you need further instructions on this.

I hope that clears up any unknowns. The source is avaialble upon request and if you have a basic understanding of C I am happy to help YOU modify the code. Likewise for the CONFIG.TXT file, if you understand the basics and have had a crack at it but can't figure it out, happy to help.

[vlad01]

Aren't literally all Holden Delco based PCMs single wire? None of the cars I have ever worked on had two wires on the ALDL.

[vp304]

Have one of these for over 1 year running on my Vr with 11p no worries. Runs great
Now BennVenn just has to make one for the ls1 ecu

[pman92]

Aren't literally all Holden Delco based PCMs single wire?

Yes they are all single wire, 5v, 8192 baud.
The 160 baud 12v version used the check engine light wire (hence why it was 12v) to transmit data (used only in VN VP).

If you wanted to use this display with VT onwards you could use the chatter data from the PCM without having to send anything to request it.
You would only have to connect the RX wire to the display, since you wouldnt need to transmit anything.

There isn't as much data available, but the basics are there (RPM, coolant temp, air temp, vehicle speed, flags for warnings, a bit more).

[BennVenn]

Aren't literally all Holden Delco based PCMs single wire? None of the cars I have ever worked on had two wires on the ALDL.

All Delco PCM's have a Serial TX and Serial RX pin on the PCB. Installing serial comms uses both of these pins, these are what I use in my cars too not just for the serial comms, but for my LCD. 'high speed' PCM's have an IC which combine both signals into a single wire which leaves the ECU via the connector. You can use this too

[Chr0m3]

Aren't literally all Holden Delco based PCMs single wire?

Yes they are all single wire, 5v, 8192 baud.
The 160 baud 12v version used the check engine light wire (hence why it was 12v) to transmit data (used only in VN VP).

If you wanted to use this display with VT onwards you could use the chatter data from the PCM without having to send anything to request it.
You would only have to connect the RX wire to the display, since you wouldnt need to transmit anything.

There isn't as much data available, but the basics are there (RPM, coolant temp, air temp, vehicle speed, flags for warnings, a bit more).

This would work, it'd still be fairly slow and rpm is in this instance is only 25/1 so resolution isn't great either (could patch that), would work okay for digital but not analog dashes.

Interesting thing you can do as well (I've done it before), patch ecu code to send rpm in place of real time fuel usage and the 3 screen clusters show rpm then, looks pretty average due to layout on cluster though.

But yeah I did play with this a while back and didn't seem great.

[Holden202T]

just got mine the other day thanks!

i plan to try and test it on a $11P vehicle shortly!

[BennVenn]

Let us know how you go!

The 3 LCD order will be shipped tomorrow, sorry for the late shipment whoever you are!

[seabreeze]

These are showing sold out. Did i miss the current release?! Will there be another batch?