Gear positioning output

[Camal]

Hey guys how can I output gear position to a 6 wire digital gauge using the link g4+ extreme each wire is labeled per gear

 

[Adamw]

You would need 6 aux outputs to do that, do you have 6 spare?

[Camal]

On 3/11/2021 at 5:54 PM, Adamw said:

You would need 6 aux outputs to do that, do you have 6 spare?

Yes I do have 6 spares

[Adamw]

Something like below.  I've only done 3 as an example but it should be clear enough if you look at these.

[Ian C]

Hi,

 

I stumbled across this thread while searching the forum for a way in which I could create a display showing the current gear selected - I have recently upgraded my Cobra replica kit car from the original RV8 and Cosworth T5 to a Toyota 1UZ and BMW GS6-53DZ 6 speed gearbox and am finding it hard to keep track of which gear I am in on track days, with embarrassing consequences.

 

Unfortunately I don't have 6 unused Aux Outputs on my Link Storm but I do have 3.  My days studying Boolean algebra finally proved of use when I realised that by assigning the three available Aux Outputs to represent binary digits I could then use the three conditions to select the outputs to show the numbers 0 - 7 in binary.

 

This is hard to explain but hopefully will be clear from the tables below -

 

Aux #	Function	Label	Switch Logic	Sw Cond 1	Gear =	Sw Cond 2	Gear =	Sw Cond 3	Gear =
6	GP Output	Bit One	Cond 1 OR 2 OR 3	Gear =	1	Gear =	3	Gear =	5
7	GP Output	Bit Two	Cond 1 OR 2 OR 3	Gear =	2	Gear =	3	Gear =	6
8	GP Output	Bit Four	Cond 1 OR 2 OR 3	Gear =	4	Gear =	5	Gear =	6

 

My logic says that the outputs of Aux 6, 7 & 8 for the various gears will (should?) be as below -

 

Gear #	Aux 8 Bit Four	Aux 7 Bit Two	Aux 6 Bit One
1	0	0	1
2	0	1	0
3	0	1	1
4	1	0	0
5	1	0	1
6	1	1	0

 

All that would be required (?) would be a 7 Segment display with a binary input!

 

My question is has anyone done this or can anyone say why it would not work?

 

Regards,

Ian

[Adamw]

It should work as you expect.  You can get 7 segment BCD drivers such as 4511 that would handle the display side.  

Another option is our CAN gauge, then you can display anything you want as well as alarms etc.