Has anyone seen this? http://www.flutterwireless.com/
Know if it's for sale yet? Can't find any purchase links on their site, and Kickstarter campaign is over....
No but I have seen (for sale on a uk web site) a 433 GHz rig that was claming 2k as the range.
Mark
From what I can tell... the Flutter appears to be nothing more than an Arduino with a few extra components connected to the SPI bus and the i2c bus. Let me clarify... They appear to be using the CC1101 RF chip from Texas Instruments (although there was mention of using the CC1200 series in the future). This RF chip has an SPI interface. There is also hardware encryption done by an i2c chip, the ATMEL ATSHA204. They appear to have a simple radio library that you link into your Arduino code. I'm guessing that the receiving unit just does a SPI read from the RF chip's receiver buffer, then passes the data to the i2c encryption chip for decrypt, then returns the decrypted data to the calling routine. In fact, I noticed that there are no digital I/O pins 11, 12, and 13 in the photos I saw. Guess they don't want anyone to interface with any other SPI devices. Not smart if you ask me. At least allow for the option. What if I wanted to have an SD card? You might have to hack into the board to get at that interface. Anyway, you could probably just write your own interface to the SPI RF chip and skip the data encryption / decryption. Do we really need to encrypt? Guess that depends on your needs. Also Analog pins A4 and A5 appear to be absent, probably because those pins are used for i2c. They must be allowing for i2c somehow, though, because some of their product photos show Adafruit i2c products connected. But those photos show the product upside down the wires hidden. Unfortunately they don't appear to have any detailed pin out listing... I can only go after what I can see in a few photos.