I introduced micro drone building using cc3d board at last posting. As you know, it’s peace of cake to assemble the drone hardware for hobby enthusiast. Now I introduce how to setup the openpilot software onto cc3d board. Openpilot is very easy and provides intuitive GUI. Every setup process was wizard driven so that there was just clicking efforts. I download R15.02.02 at here. After installation and double click the shortcut, initial screen as below was displayed.
The first thing to do is connect the cc3d board into a computer using mini usb cable.
And click the Vehicle setup wizard of the openpilot software. Configuration progress were these steps: firmware update –> select RC input type –> select vehicle type –> select ESC type –> accelometer calibration –> ESC calibration –> motor ouput calibration –> transmitter configuration –> Flight mode setup. When update the newest firmware, there was one thing should consider that don’t connect usb cable into the labtop before click the ‘Upgrade’ icon.
All the steps are wizard driven, so I think anybody can do this just following the instruction as described onto setup wizard. For flight mode setting, I could select 3 types which are attitude, rattitude and rate mode. Attitude mode is that both Gyro and accelerometer are engaged to control the copter stabilization so that make more easy control. Rate mode is that only Gyro is engaged. Most racing drone enthusiast using this mode. Rattitude mode is mixture of attitude and rate mode.
The last thing for setting is PID_tuning. This is the hardest job for beginner. But the steps are not complicate. There is so great guide for this at diydrone forum. I switched the flight mode to rate and gained pitch rate on Inner Loop. And then, switched the flight mode to attitude and gained pitch rate on Outer Loop. Here is the result I tuned.
Here is the testing flight. She flew 7 mins with 1000mah 3s lipo.
My overall rate of cc3d FC and openpilot is 5 starts. There was no autonomous features like APM, but setup was so easy and default PID setting was so stable so that don’t need to edit or tuning the PID value.