Digital Coolant Temp on 1990 - ZR-1 Net Registry Forums

-=Jeff=- · 04-17-2023

So I really don't like the Analog gauge. I have wanted the digital gauge for my 1990 for Coolant at minimum. Well I made a solution using my LCD DIC. I also installed a 1991 CCM in my car to improve the LCD Cluster display lighting.

I drove the car yesterday with the roof off and had no issues seeing the LCD speedo with my sunglasses.. that was a win

my original layout for my screen was lacking in display size and colors.. here is a quick video clip of the stuff on the LCD DIC:

https://youtu.be/mldRp7XDwUk

GOLDCYLON · 04-17-2023

Quote:

Originally Posted by -=Jeff=-

So I really don't like the Analog gauge. I have wanted the digital gauge for my 1990 for Coolant at minimum. Well I made a solution using my LCD DIC. I also installed a 1991 CCM in my car to improve the LCD Cluster display lighting.

I drove the car yesterday with the roof off and had no issues seeing the LCD speedo with my sunglasses.. that was a win

my original layout for my screen was lacking in display size and colors.. here is a quick video clip of the stuff on the LCD DIC:

https://youtu.be/mldRp7XDwUk

I can't tell in the video but I assume the splash logo goes to red when the key is on ???? Pretty slick

Mikey · 04-17-2023

Do you have a post explaining the LCD DIC setup? I want to do this in my 1991

Thanks
Mike

Matt B · 04-18-2023

What a damn cool solution! As I never saw or heard about this before - how did you realize this?

And is there an option to show the vehicle speed with a higher "frame rate"?
That lazy C4 speedo sucks...

HAWAIIZR-1 · 04-18-2023

Wow Jeff! You are DA MAN! This is friggin cool brother!!

Sent from my iPhone using ZR-1 Net Registry

Mikey · 04-18-2023

found a few of your other posts on CF and very short videos, but not exactly sufficient detail for one to tackle this project in the same way. Sounds rather involved though, with a CCM swap, cluster swap, lcd display, home-developed software, etc.

inquiring minds would like to know if you have any intent to document a how-to or sell a DIY kit?

-=Jeff=- · 04-19-2023

Quote:

Originally Posted by GOLDCYLON

I can't tell in the video but I assume the splash logo goes to red when the key is on ???? Pretty slick

Yes Key on Red, Key off White or Amber ( depending on the interior lettering color

Quote:

Originally Posted by Matt B

What a damn cool solution! As I never saw or heard about this before - how did you realize this?

And is there an option to show the vehicle speed with a higher "frame rate"?
That lazy C4 speedo sucks...

I did a bunch of work and had some help for some of the info I display. I doubt the refresh rate is faster though

Quote:

Originally Posted by Mikey

Do you have a post explaining the LCD DIC setup? I want to do this in my 1991

Thanks
Mike

Quote:

Originally Posted by Mikey

found a few of your other posts on CF and very short videos, but not exactly sufficient detail for one to tackle this project in the same way. Sounds rather involved though, with a CCM swap, cluster swap, lcd display, home-developed software, etc.

inquiring minds would like to know if you have any intent to document a how-to or sell a DIY kit?

You don't need a CCM swap, you don't need the cluster swap. This will replace the DIC light display with an LCD. I have not posted too much because the screen I am using is not easy to find and it is not very bright/readable in direct sunlight. I have ordered a new display and once I get it and get it setup I may get a good list together of what is needed. I have also printed two different 3D parts for mounting. I will get details soon enough once I prove it out a bit more..

Mikey · 04-19-2023

Quote:

Originally Posted by -=Jeff=-

You don't need a CCM swap, you don't need the cluster swap. This will replace the DIC light display with an LCD. I have not posted too much because the screen I am using is not easy to find and it is not very bright/readable in direct sunlight. I have ordered a new display and once I get it and get it setup I may get a good list together of what is needed. I have also printed two different 3D parts for mounting. I will get details soon enough once I prove it out a bit more..

Well that would be awesome!

-=Jeff=- · 04-23-2023

for those following.. my solution uses 2 Arduinos the screen and a few parts..

I am 220 in parts not including the OEM DIC connector I have yet to source outside of getting from a current Info Center.

That also does not include the 3D parts I made for this..

this assumes the new screen works well

GOLDCYLON · 04-23-2023

Looking forward to this

04-17-2023	#1
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Digital Coolant Temp on 1990 So I really don't like the Analog gauge. I have wanted the digital gauge for my 1990 for Coolant at minimum. Well I made a solution using my LCD DIC. I also installed a 1991 CCM in my car to improve the LCD Cluster display lighting. I drove the car yesterday with the roof off and had no issues seeing the LCD speedo with my sunglasses.. that was a win my original layout for my screen was lacking in display size and colors.. here is a quick video clip of the stuff on the LCD DIC: https://youtu.be/mldRp7XDwUk __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

04-17-2023	#3
Mikey Join Date: Jul 2020 Location: Nashville TN Posts: 323	Re: Digital Coolant Temp on 1990 Do you have a post explaining the LCD DIC setup? I want to do this in my 1991 Thanks Mike

04-18-2023	#4
Matt B Join Date: Jan 2021 Location: Beautiful Bavaria Posts: 523	Re: Digital Coolant Temp on 1990 What a damn cool solution! As I never saw or heard about this before - how did you realize this? And is there an option to show the vehicle speed with a higher "frame rate"? That lazy C4 speedo sucks... __________________ ZR-1 #638/1991

04-18-2023	#5
HAWAIIZR-1 Join Date: May 2010 Location: Japan Posts: 3,582	Re: Digital Coolant Temp on 1990 Wow Jeff! You are DA MAN! This is friggin cool brother!! Sent from my iPhone using ZR-1 Net Registry __________________ Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048

04-18-2023	#6
Mikey Join Date: Jul 2020 Location: Nashville TN Posts: 323	Re: Digital Coolant Temp on 1990 found a few of your other posts on CF and very short videos, but not exactly sufficient detail for one to tackle this project in the same way. Sounds rather involved though, with a CCM swap, cluster swap, lcd display, home-developed software, etc. inquiring minds would like to know if you have any intent to document a how-to or sell a DIY kit?

04-23-2023	#9
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: Digital Coolant Temp on 1990 for those following.. my solution uses 2 Arduinos the screen and a few parts.. I am 220 in parts not including the OEM DIC connector I have yet to source outside of getting from a current Info Center. That also does not include the 3D parts I made for this.. this assumes the new screen works well __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

04-23-2023	#10
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: Digital Coolant Temp on 1990 Looking forward to this __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V