msev:
Would you also share the code? Is your code also frequency hopping? Do you have failsafe implemented? Do you have rssi implemented (would it be possible to have an audible alarm, if I connected a buzzer to the board), can rssi be taken from the board (on the plane or heli) to an osd? Is it possible to configure the power output of the module - for example to use a booster.
Ok lots of questions...
I yeah I will share the code, there are some problems with it. The arduino servo library creates weird glitches, so I had to use software servo. I would also like to test it some more before I give to other ppl. I don't have FH right now, but the RF22 library supports it, so will not be too difficult if you want to add it yourself. RSSI yes, you will have to use analogWrite and low pass filter it if you want to output a voltage though. I actually have a header to add a switch to change the power from 1db to 20db for range testing.
msev:
Are you familiar with multiwii (Google Code Archive - Long-term storage for Google Code Project Hosting. , http://www.multiwii.com/ )? Probably it would be possible to incorporate multiwii in your design, because the relevant pins (SDA and SCL) for interfacing with sensors are free right?
I would like to have my plane stabilized and autolevel,...Since your board is 5V unlike Melihs, I can use a original wii-motion+ as a gyro,...and as a accellerometer I will use a adxl345 which has already an LLC and voltage reg. on board.Instead of using a SMA connector like on your photo, could I just solder the coax directly to the pins? (central conductor+shielding)
Are those two leds on the board useful for diagnostic if the boards are working, for example uploading blink sketch?
Ok a bit of bad news. I planned to use the arduIMU for stabilization, so I did not really want to use I2C. So although you can use SDA and SCL, they are also used for the LEDs! So if you want to use I2C, you can't use the on-board LEDs.
Yeah you can definitely just solder coax directly to the board, that's what I did on my prototype.
msev:
How far away did you go with your heli :D?
Not very far, maybe 25m. It's a small HK450, I can only see it that far...