Pizstonenumb:
Oh by the way I have just completed my first serious project. It even worked to my amazement.
Knocked up a box that tests trailer lights for a friend. It simply plugs into the truck trailer and runs a short program to switch the lights on in a sequence so he can do a visual check as he walks round the unit. He is a mechanic and works for a supermarket/superstore chain.
Used one of the circuit boards with 8 relays on it. Very pleased with the outcome.
Good project to start with, power supply, basic I/O and output interfacing.
The next step would be some current sensing as each light is lit.
So without even looking at the lights you can tell if any light circuit is open circuit, ie blown, or open lamp/LED.
Even calculate wattage of each circuit, to see if correct lamp/LED being used.
Tom.. 