Uglie Carnie - slalom

By: Uglie Carnie  06-Dec-2011

Dreamed, designed, prototyped, built and tested….

This is the final prototype of a wireless timing system. It works using a set of tweeked walkie talkies so your start line can be as far as 1-1.5 km from the finish!

Duel lane: The smaller box has a big red button for starting the race and sounding a LOUD buzzer and the timer box is at the finish with both track switches plugged in to it.
Single Lane: I like to run the timer box at the start line with one track switch plugged in and the big red button box at the finish with the other track switch plugged in. This method means that one rider can reset their time, lay down a run, HEAR they have crossed the finish as the buzzer sounds and but have to return to the start to get their time.

This is a pcb that did not make it past quality control before being set to the etching tanks, printing fine traces is tricky and making sure every trace is good before removing all that copper is even harder!

Here is what it looks like with less copper and more components! There is definatly going to be a small error in all displayed times due to transmission time but both lanes are always within 0.05 of a second to each other so lane to lane it is very fair.

Any questions or comments?

Other products and services from Uglie Carnie


Uglie Carnie - skate

Decided to lock it in place with some epoxy just to make sure it will last the distance as well as providing some high build so I can sand in a flat surface for the bushing. I was careful to make sure the hole was just tight enough that I would be able to press fit the bearing into the hanger. Decided to reshape the pivot as the original casting has a casting split line around this area that creates an oval pin.


Uglie Carnie - custom

By not leaving it to much past the tack point you make sure the resin that is boning the board, fabric and fill coat will be chemically bonded and save any sanding bits getting trapped in a pocket and ending up in your finish. Mid way in and most of the taller highs and you can make note of the areas that you should be careful around so I will blast it for a while with a wide disk soft backed power sander to with a med grit.