After the disastrous Blade MQX, the Syma X1 was incredible. It has an accelerometer, giving it rock solid, level flight. It's the only thing to be reasonably flyable in the apartment, by a human. The transmitter is still a steaming pile of dog turd, but it's much more functional than the Blade. It has a convenient LCD, showing the control status.

It's hard to believe Horizon put out something as non functional as the Blade MQX unless they planned on releasing a later version with accelerometer to milk every last drop out of the customers. It's like they didn't really want to produce a quad, but put out a teaser to test the market.


The Syma was so stable, it was an immediate contender for the indoor drone prize. An initial test would ignore yaw & just see if machine vision could hover it. The weight limit would require it to be flown with the existing board & the transmitter hacked into.

After some heroic soldering, the stick voltages were once again logarithmic, like every other el cheapo remote control. Also, using PWM to synthesize the voltages was too noisy. The digital protocol was a well obfuscated SPI protocol. These issues would take some doing to resolve & a 2nd IMU would still be required to determine heading, making a custom flight computer more practical than hacking the transmitter.

jack, what reason to think it has accelerometer? that does not seem appropriate for the cost of the fc and i can assure you there is no mcu with integrated accel.

Did you know this X1 binds to the 9x radio? The range is now not a problem, more info over here.
http://www.rcgroups.com/forums/showthread.php?t=1797545

no ACC on this X1