I need some help. I'm building a Large LED race start timing system either using a LED TV or 7 segmented LED panel.
What I need to externally control is a bank or a single LED light 12V or less. I need this light to turn on when the countdown commences and turn off when zero is reached.
I have a USB to Serial adapter installed.
Any help with a supplier of good quality LED Panel’s would be greatly appreciated. My minimum number sizes are 12”w x 18"h or larger per number. I’m also only need three digits. (5.00)