Atcold

May I ask you with which Arduino board should I start? I.e., what do you think is the best for my specific project between Arduino Uno, Mega 2560, Duemilanove, Mega ADK, Diecimila, Nano, Fio, Pro etc..? It is a jungle of devices out there, an it's scarring me a bit!

Oh! God bless you! I had lost all hope that someone would answer me and now, someone did it! Even though who requested this project to me disappeared, this topic still interests me. Many thanks indeed!

I would like to have some suggestions about how I could realise a device that is able to make an easy wireless connection (tx and rx) and switch on and off a couple of LEDs. Device description There is a device and a PC. When the device and the PC handshake, the device switches on a green LED. Pressing the (only) button on the device the LED turns red (green OFF, red ON) and a signal has to be sent to the PC. The PC can identify which device has made the transmission. When a button is pressed on the PC's program, the LED on the device turns back green (green ON, red OFF), like to say "I got the device x has taken the task". The transmission will always start from the device. Further characteristics Range: 10s of metres; Obstacles: plasterboards walls (with metallic framework), mobile phones; Hypothetical solutions: WiFi and access-point or any not standard wireless communication; Budget: the cheapest, the easiest; # items: 3 (at the beginning); Software side: no problem on the PC side. I do not have any (really any) idea about where to start. I have never done any wireless communication, so this is a completely new field for me. So, I would be very glad also to receive a suggestion about what to read. Many thanks indeed to anyone who can leave a feedback :)