Simple Dash on Arduino+LCD with GameDash

paulopsx2 · Jun 12, 2017

TOPMO3 said: ↑

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added 10.05.2016

just realized all pic's links are broken, corrected.
changed wiring scheme to use A5 and 13 pins
changed sketch to 02a version

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Added 08.08.2015

Hi All!

I think Im done for a while with the project, so I wanted to describe functionality and made a small how-to guide

Dash has 2 screens for output information (switch by “Screen” button):
screen 1: RPM, Speed, Fuel left %, Gear, Lap, Fuel Burning Rate
screen 2: Water Temp, Oil Temp, Fuel left in Liters and %
RPM Lights and Engine warnings displayed in every screen.

You can tune parameters (“Settings” button):
RPM Min threshold - at which RPM leds begin to light
RPM Max threshold - at which RPM stripe is full and after that leds will blink
RPMAutotune - 0 or 1, details below
Water Temp warning - at this temp the water dash will showed in RED. The dash will showed in YELLOW at 80% of this
Oil Temp warning - same as water but for oil temp.
Fuel % and Litres warning - same as water but for % and Litres of fuel accordingly.

A few words about RPM shift algorithm:
- simplest and default mode is when dash "learn" max rpm for current session and simply blinks at 98% of it. This controlled parameter RPMAutotune=1.
- manual mode is when you can define min threshold (at which LEDs start to light) and max threshold (at which lights begin to blink). This should be useful for more fine-tuning RPM lights for different cars (RPMAutotune=0)
- and mode based on telemetry (like iRacings` ShiftPercentPct). Currently it works only in iRacing I guess, because I don’t think any other game use this method for rpm lights (output in %%, lights should blink on 60%). I hope I will add support for other games in the future.

Engine warnings in the form in which it exists also are iRacing only. For them, iRacing provided bit mask, which decomposes in the sketch as:
R - Rev limiter
W - Water Temp Warning
F - Fuel Pressure Warning
O - Oil Pressure Warning
E - Engine Stalled
P - Pit Speed Limiter

I make a vid for more clarity

I mount the dash in holes of my G27, this way:

30505

Ok, now to technical aspects.

I’m using Arduino Leonardo, but UNO R3 should works nice too.

TFT LCD is this which has ILI9341 lcd driver, so I can use standard AdaFruit libraries - Adafruit GFX graphics core and Adafruit_TFTLCD. After download you need to rename them to Adafruit_GFX and Adafruit_TFTLCD respectively (read readme.txt!) and place this libraries to your documents/arduino/libraries directory.

NeoPixel strip is this, which works with Adafruit_NeoPixel, also need to rename folder to 'Adafruit_NeoPixel' and install in Arduino Libraries folder.

I bought buttons in local store for less then $0.5 each. So total cost for the project for me is Ard ($10.25) + TFT LCD ($9.89) + NeoPixel Strip ($6.26) + 6 buttons (6*$0.5) = $29.4

Wiring is pretty simple, the diagram is below:
30506

I.e.:
PIN A5 - “Screen” button
PIN 11 - “Settings” button
PIN 13 - “Increase” button
PIN 12 - “Decrease” button
PIN “Reset” - “Reset” button
PIN 10 - NeoPixel strip DIN

GameDash settings:

30507

30508

Arduino sketch is attached.

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Original post 22.05.2015
Hi all!

decided to make small project using LCD and NeoPixel strip.
Arduino sketch based on excellent work by soraz (thanks for it!)

still wip, tested only in LFS so far. I'm in desperate need of a iRacing plugin, begin to write the plugin by myself but not a big progress yet.
in TODO list - second screen with more info and buttons
Arduino sketch attached, if someone interested
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Click to expand...

interesting... runs at any game or specific?

TOPMO3 · Jun 12, 2017

Any game if its plugin supports dash data

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Simple Dash on Arduino+LCD with GameDash

paulopsx2 Active Member

TOPMO3 Active Member