Trigger system

[rokieeee]

Hello everyone,

I have a question about how to trigger arduino.
I have arduino mega on my Project. I am controlling 50 led with this arduino.
It Works only when i give 9V.
İ planing to make a program on computer and connect arduino to the computer.( RF sensors or cable no matter)
When i say start from computer arduino should start.

just to button on software.

start and stop.

waiting for your answers.
Thank you everyone.

[guix]

Hello and welcome,

The common way to communicate with the arduino from PC is to use a virtual Serial port. See the SerialPort class. If you need, there are many examples on this forum