The R2Duino is a fully assembled USB STICK sized Arduino clone based on the ATmega328. It has the same functionality as the Arduino Nano 3.0, but comes in a different package. It lacks only a DC power jack, but has a standard size USB connector which fits right into the USB connector of your PC. The name R2Duino comes from the fact that this microcontroller board has 2 RELAYS, connected to pins D8 and D9. The R2Duino was designed and is being produced by Certeza.
Specifications:
Microcontroller: Atmel ATmega328
Operating Voltage (logic level): 5 V
Digital I/O Pins: 14 (of which 6 provide PWM output)
Analog Input Pins: 8
DC Current per I/O Pin: 40 mA
Flash Memory: 32 KB (of which 2 KB used by bootloader)
SRAM: 2 KB
EEPROM: 1 KB
Clock Speed: 16 MHz
Dimensions: 70 x 30 x 20mm
EXTRA: 2 relays (60V AC/DC 400mA) on pins D8 and D9, enabled/disabled by jumpers
EXTRA: Standard size USB connector
Included in the package:
4 rows of pin headers. You can solder them on the board if you need them.
I have produced a small run of 20 boards. If there is enough interest I will produce more.
I built a mail checker with it. A simple perl script om my PC sends a code to the R2Duino which activates a relay that switches on an little toy duck that makes a lot of noise when there is new mail.
I have added it to my arduino board list file and it will be uploaded soon. Just having a bit of a code revamp of all the pages now so it may be a day or two.
If this could be "ruggedized" some, with perhaps a few right-angle headers and some acrylic for the top and bottom (or a molded case of some sort), it would make for a nice on-the-go Arduino for a netbook.
@Eight, the relays are able to handle 60V, AC or DC, and 400mA.
@mowcius, @crOsh, 4 rows of stackable headers are included in the package. And I am negotiating with a chinese manufacturer of molded cases for USB sticks. But the point is, you still want to be able to access the pin headers. I haven't figured out yet what the molded case should look like. Any suggestions?
I'm thinking that maybe the relay pins want to be screw terminals.
Make them screw terminals, add some right angle headers and an acrylic case and I'd be buying one for a laptop. The headers want to come out sideways I think. Then have the pin names labelled on the top.
An arduino is always so much better than an emulator.
This toy duck, connected to one of the relays
on the R2Duino stick, quacks 1, 2 or 3 times (1 message,
medium load, heavy load) when there is new mail.
Very annoying, forces you to check your mail regularly;-)
Just received the R2 and might as well share a few thoughts.
I certainly can't complain about the order process; and pretty quick shipping too.
It is a nice little thing. I ordered one because the project I am moving towards requires two relays and it's ideal having them on-board.
Out of the packet, into the USB port. Comes loaded with a blinkie example that works immediately. Nice.
Then, remembering to grab the com port drivers from Silicon Labs, I started up the Arduino IDE and loaded my own Blink sketch.
No problems there at all. Works great... could just be my imagination but I think the upload/reset process might even be a bit faster than a Duemilanove???
I'm impressed so far and looking forward to playing with it a lot more over the weekend.
This is very cool. I LOVE the on board relays. If I didn't have a couple stickduinos sitting on the bench right now I would snap up a couple of these. Thanks for making these available!
