GI: "YarGauge" replacement clock module (Digital Tach, etc.)

[goku87]

Originally Posted by CTScott

OK. So far it looks like I'll keep the clock function. The other function that I am thinking of adding is inside and outside temperature.

I will also be experimenting with 1 line vs 2 line LCDs to see what will fit in the slot that the clock peeks through. the slot is actually about 1 5/8" x 5/8", so it may be possible to squeeze a 2 line by 8 character LCD in there, which would allow the clock or temp to be displayed simultaneously with one of the other items.

Also, the RPM measurement will be done directly (via the Tach input wire to the meter), rather than through the CAN comm with the ECM. This will make it more responsive than the devices that get it second hand from the ECM.

was looking at the hole and it doesn't seem super big for the two-line display to be able to have the same size digits as what's already in there. :(

[justjesus]

Originally Posted by CTScott

After successfully fooling the ECM with the 3 circuits, I realized that the speed one could be a fairly simple way of bypassing the speed limiter. Does anyone who races (legally) have an interest in testing that functionality?

I wouldn't mind taking another trip to El Mirage for top speed runs (it's legal).

[CTScott]

Originally Posted by justjesus

I wouldn't mind taking another trip to El Mirage for top speed runs (it's legal).

Cool! When I have a chance I'll build up a test unit. I realized recently that I can do a reverse test initially to make sure it works. By reverse test I mean fooling the ECM to think that the car is doing 130MPH when it is actually only doing 25.

[Vitz RangaaaH]

Ooo can't wait, ill be setting money aside for this.

[justjesus]

Originally Posted by CTScott

Cool! When I have a chance I'll build up a test unit. I realized recently that I can do a reverse test initially to make sure it works. By reverse test I mean fooling the ECM to think that the car is doing 130MPH when it is actually only doing 25.

LMAO - I was thinking you'd be driving in reverse!! Glad you cleared that up.

[CTScott]

Update: Getting close!

I am making good progress on the YarGauge development and am getting close to being ready to cut a production printed circuit board that will allow me to package it to fit where it is intended to go. Right now I have three separate prototype circuit boards, tied together, handling the various functions.

On of the last "data" related pieces I have been working on is the fuel economy (MPG) piece. Last night I did a test run to make sure that my code was functioning properly and captured the data to do some after the fact analysis on. Here's a plot of speed (MPH) vs. fuel economy (MPG) from a 4 mile test run last night. The graph really doesn't have much to do with the YarGauge, but I thought it was interesting enough to post.

I started capturing data about 1/4 mile from my house, going down a long steep hill, as I was specifically interested in catching a DFCO event.

Then I sit at a stop sign for a minute or so, waiting to make a left. Then, I drive about half a mile before making a left, a quick right, and a left (the three low bumps). Then I cruise up a long hill, which has a couple of level off points (seen by the DFCO events). I then make a rolling stop (low bump towards the end), a right turn, and then cruise down a gently sloping hill, before finally stopping.

MPG vs MPH.jpg

[TinyGiant]

thats pretty sweet

will there be functionality to download this data from the unit you will be selling.. scratch that.. that i will be buying!?

[CTScott]

Originally Posted by TinyGiant

thats pretty sweet

will there be functionality to download this data from the unit you will be selling.. scratch that.. that i will be buying!?

Hmmm. After playing with the data last night I was thinking that it would be cool to offer that feature. I'll have to see how that fits as I work on cutting the PCB and figuring out the packaging. The interface would be USB, so I could probably squeeze in a mini usb jack, and then you'd run a USB cable from the back of the cluster to someplace where you could plug it into your laptop.

[TinyGiant]

if that was a $10-15 increase in price option i'd still do it :)

that would be an awesome feature.

[advocate]

That is pretty damn cool CTScott. Gotta start saving for this awesome gadget if it's getting close to being finished.

[TinyGiant]

is there stock i can buy now in CTscott Corp?

lol I want to get in cheap :)

[Lewis]

This will be a great Christmas gift for members to get for themselves from CTScott!

[Kioshi]

CTScott is the Santa Clause for Yaris World :)

I may end up keeping my stock cluster in case i want to swap back and forth between Scott's modded RS cluster and Scott's replacement clock module on stock cluster.

[Lewis]

Jingle Bells........Jingle Bells

..................oh what fun it will be to ride in a Yaris with a Yargauge!

[PatrickJohnson]

i want it now.

[anubisx99]

Originally Posted by PatrickJohnson

i want it now.

+1

[Mistry]

Looks good and you are making real progress!

Have to say that there are some really gifted people on here.

Keep up the amazing work!!!

[justjesus]

Neat info on that graph!
Keep it going, CT.