[Dr_C2]

This project has reached the point where the backplanes have been assembled for an 11-digits-in-a-row numerical read-out.

The revised sequence is:

2 white digits then
2 green digits then
5 red digits then
a final 2 green digits

The 2 white digits will always show the IDs of cars traversing the speed trap.

The 5 green digits will either show speed trap transit time, transit speed or latest lap time.

At present I am identifying the correct series resistors for the white, green and red segments when driven by a 12V supply. Also, since the decimal points have different LED configurations these also require correct identification of the series resistance which will provide a matching of intensity.

The three colours of LED digits are shown below:

   

Note, the red digit looks red to the human eye but captures more orange-like with my iphone camera. In ‘reality’ it is red… honest.

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