I've been thinking a lot lately about how cool it would be to implement inertial dead reckoning on ArduCopter for a gps-free loiter mode of sorts. I just wanted to get some discussion going from people who have studied this or have tried implementing it, as I know it is difficult.
I have recently performed flight tests on a major change in the way acceleration is accounted for in performing roll-pitch drift compensation from accelerometer measurements. The theory behind the idea was recently published in a…
APM Mission Planner is adding more support for the AttoPilot Voltage Sensor. Thus the Open Hardware Store has introduced a voltage sensor kit that is ready to be used and you just need to plug it in and configure Ardupilot. It comes with XT60-connectors and a 15cm long servo cable to connect to the…
This is a Parallax Propeller chip running a partial implementation of Premerlani and Bizard's work on Direction Cosine Matrix computation for orientation sensing. I'm hoping to use this in a quad-rotor without a GPS or magnetometer - I wanted to see how good the algorithm was at stabilizing pitch and roll. So far it looks very promising.
All the work is done on the Propeller itself. It reads the gyro and accelerometer values on one core, and computes the DCM… Continue
IOIO is a new small board designed fr android system (phone, tablet, ...)
48 total I/O pins - all of which can function as digital inputs and outputs.
Up to 16 analog inputs (10-bit).
Up to 9 PWM outputs.
Up to 4 UART channels.
Up to 3 SPI channels.
Up to 3 TWI (I²C-compatible)… Continue
This video shows the PIXHAWK onboard pattern recognition. Interested in the hardware to run it onboard? Two approaches have been implemented: One is extremely efficient and runs at 30 Hz on a Gumstix Overo (ARM Cortex-A8, Smartphone processor). This approach is based on first detecting quadrangles and then matching the objects enclosed by these. We used this…
I was design IMUNEXT v2 board on this March but i didn't find time for testing and working with it. Now i have a time for this because my Quadrocopter, Camera mount and Plane waiting for stabilisation ;)
IMUNEXT v2 including 8 channel servo IN/OUT , Serial port for XBee modules or GPS, Serial PPM input for external controls.
I'm planning to share opensource codes and circuit…