[Dr_C2]

These PCBs are in production so I can now turn some project attention to what the finalised display should look like.

I have these 4inch seven segment displays in three colours: white, red and green.

So the plan is to assemble 9 of the display modules in a row:

From left to right, 2 white, then 5 red and then 2 green.

The white digits will display car ID.

The red digits will display speed in m/s as the cars cross the sensor zone and will use the format ‘ZZ.ZZZ’ m/s. (I added one extra digit since the earlier post).

The green digits will display laps total, laps to go and/or maybe the car’s finish position.

This display should be great as a track-side speed trap, a basic multi-car lap counter or perhaps a drag-strip timer?

The 4inch display modules should be readable at quite a distance. Hopefully they will be useful at public events?

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