Golf mk2 realdash and dashbox

General Custom Hardware / Electronics
1

HI all!
i am running link ecu on my car and now i will fit a tablet with realdash.

My idea is to use dashbox lite from sp leinonen, connecting link ecu to dashbox by can, and dashbox to tablet by bluetooth.

To Dasbox i will connect high and low beams, turn signals, oil pressure switch, battery light, outside temperature, fuel level and if possible mfa (oem dashboard computer switch) .

My question is if it is possible to have a good fuel level signal connecting tank level sender directly to dashbox or if i will need to make an electonic circuit for it.

I have read that if i connect them directly, readings will be random when car is moving so it is needed a circuit for filtering signal.

if it is needed how could be made that circuit?

2

Helo,
To compensate the hard fluctuation fuel level sender I’m using the ramp circuit as:
https://www.edn.com/linear-ramp-generator-uses-one-op-amp/

I think it helps me and you can try
Regards

3

Current RealDash version allows for non-linear mapping of the inputs and has some special smoothing for the Fuel Level input, so the fuel level fluctuation while driving should not be an issue anymore.

4

To which ID should the fuel level data be sent to be smoothed? ID = 170? ID = 201?
And as far as I understand, nonlinear scaling is available only for the “VALUE NAME” specific data?
Is it possible somehow to do non-linear scaling for ID = 170, 201?

5

Thanks a lot guys! next week i think will start with dashbox wiring, ON the other hand i need an ouput for exiciting alternator, the easy way will be using a led between the 12v and alternator, but will be cool could use realdash and dashbox

6

What is 201? ( RealDash | Manuals | Target Identifiers )

7

The special smoothing is always applied to Body Electronics->Fuel Level (170), so when you use input mapping to map your custom value to that, it is always properly smoothed.