Hi everyone,
I’m a new member and I want to program an Arduino Pro 3.3V/8MHz.
It’s a second-hand card so I don’t know how it works.
When I connected my card for the first time, a yellow led was on. Maybe the led pin 13. But, now, I don’t why, but it doesn’t want to light. Maybe the card is broken. I send a 5V power on the card, so maybe it is…
I will probably buy another one card in a few times and I would like to know how to connect the card (power) and the analog input and the digital output. In the program in C, how insert the analog variable in my program. What is the good syntax? (For example, how to use the first analog input?)
Thanks in advance, any answer can be interesting for me 
Bye