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Digital Timer - Display Panel Build

For this project I decided to build a double sided display panel.

Putting the display panel in the middle of the flight line means that it will easily be seen from both ends.

By setting up the panels at around 30 degrees to each other, they will also be clearly visible from all parts of the landing area.

I have enjoyed carrying out this project and seeing the display panel that I built work for the very first time. A great feeling.

Nothing is really difficult. It all just needs to be thought through before you begin so that there aren’t any surprises.

The Display Panel Build story

Get the printable version of this build project (9 pages .pdf). Click to open
It describes everything, step by step.
Hopefully this document will help you with your own project.

If you need the Silicon Labs USB to TTL drivers, click button to download.

Display Panel Stand

Pierre Louis LE MESLE of Aéro-Model-Club de Châteaudun France inspired this build by sending me a photo of his display, with stand. This stand is made of 7m of 32mm diameter pressure PVC pipe with associated fittings. The pressure pipe fittings are all 90 degrees. I found that drainage pipe and fittings were not suitable.

The ropes are needed because the stand, although strong, is not very stable in the wind. The ropes are attached using large cable ties and so is the chain that the display hangs from. There are two short attachments at the bottom of the display to prevent it swinging in the wind.

Approximate dimensions are 1200mm wide x 1700mm high x 600mm deep (width of the base). I split the uprights to keep the overall length down. The stand breaks down into 8 pieces

  • 1 x top rail
  • 1 x bottom rail
  • 2 x uprights lower section
  • 2 x uprights upper section
  • 2 x base pieces

The bottom rail and the two longer (lower) uprights are all the same length so that they are interchangeable.
The two shorter (upper) uprights have a collar at one end.

Below is the detail of the base.
Two T-connectors are used in the centre.


Have a look at this short video to see how it all worked out in the end.

Note that the time in the video 'jumps' ahead about every 5 seconds so that you don't have to sit through
the full timing sequence of around 12 minutes for one round.