Old time we used wave the checkered flag to competitor and give the start signal.But now we using wireless control light system.Even we can do any night race events.and no any confusing or any error when using light system for race start.and when using wireless its so easy.
Step 1: Collect all the items you need
One round Light has 92Led's.
RED Led's = 92 x 4
Green Led's = 92 x 4
220Ohm 1/4W resistors = 44 x 4
433Mhz 4 channel wireless remote control module - bought from ebay.
Wires,Soldering iron,and solder wires.
Nut and bolts.
Solder and finish the PCB's
Step 2: Design and make the aluminium frame
Aluminium Frame and back cover panel(aluminium) - using screw nuts fix the back cover to the frame.
Light front panel with curved Light hat cover. - light hat curve shape covers made from 20 Gauge steel strips,curve them and solder with higher wattage soldering iron + solder wire and just put HNO3 acid when soldering on the soldering line.(it will easily solder) ;)
Step 4: Wiring diagram transmitter and relay out puts
and for the transmitter I have disassembled that remote with 4 buttons and soldered wires for 2 buttons and connected with 2 on/off buttons.
and put them all transmitter unit in the plastic box because it need hard and rugged use.