Dashboard PCB Replacement (CJH Design)

[TwinTurbo]

Length and width don't matter. the board can be shrunk a bit and some of the screw terminals replaced with smaller connectors. the likes of the voltage regulation could be moved to the edge card too.  

The only dimensions needed are the placement of the LED centers from one of the mounting holes. 

It would be good to make a PCB for the gauge cluster itsellf rather than lots of indivdualy sprawling wire. but I don't have the dimensions of the guage pin layout.

Cheers 

Rob

[icosahedron]

Main board: 65 x 123 mm
Connector: 65 x 24 mm

[The Hairy Camper]

Length and width don't matter. the board can be shrunk a bit and some of the screw terminals replaced with smaller connectors. the likes of the voltage regulation could be moved to the edge card too.  

The only dimensions needed are the placement of the LED centers from one of the mounting holes. 

It would be good to make a PCB for the gauge cluster itsellf rather than lots of indivdualy sprawling wire. but I don't have the dimensions of the guage pin layout.

Cheers 

Rob

I understand what you mean, Rob. LED position and mounting holes are the most important. Within reason though I suppose, I don't think their is much room to expand when you look at CJH's PCB mounted on the dash.

I think if you wanted more PCB boards for Clock, tachometer etc, you would probably need to go back a ribbon based PCB. Space behind the dash is limited, if wires can do the job well enough I'd probably stick with them. You won't see them once they're installed.

[icosahedron]

Here is measurements for the LED positions in inches:

[The Hairy Camper]

Nice work icosahedron. That looks really useful

[TwinTurbo]

thanks , that is mega useful. 

Rob

[TwinTurbo]

Ok converted to offset from lower hole "Datum, lower 3.5mm pad 0.0"

column1 .3" =.762*10 = 7.62
column2 2.1 = 5.334*10 53.34 /2 = 26.67
column3 1.8 = 4.572*10 45.72
column4 2.1 = 5.334*10 53.34 

Row1 .25 = 0.635*10 6.35
Row2 .8125 = 2.06375*10 10.6375
Row3 .1375 = 3.4925*10 34.925
Row4 1.6 = 4.064*10 40.64
Row5 1.8 = 4.572*x10 45.72

Basic schematic 



Frontside of board 




Backside of board.



And the general size for guidance. ( Flipped over )

https://www.twistedpear.org.uk/wp-conte ... 826417.jpg
 

[TwinTurbo]

This is a rough V0.0.1 which will be sent to be printed to confirm mechanical fitment whilst futher development of the circuit continues. 

I have used molex 254's connectors for the illumination.

The pin headers for the 14 pin ( to the edge connector ) and 6 pin to the guages. Are just to get something on the board , may well be replaced.