Flight control Set and Kit

Transcription

1 Flight control Set and Kit Quick Start Guide For MultiWii Version 1.2

2 Thanks for choosing AirStudio flight control electronics. We have created it based on best-in-class software, hardware and our team experience in Multi-rotors. AirStudio Control board (set) feature list: Stabilized flight modes for different multicopter frames (Tricopter, X4, plus4, Y6, Hexacopter, Octocopter, X8); GPS for position hold and return to home position; Magnetometer (Compass) for heading determination; Very precise barometer for altitude hold; Mounted camera stabilization and shutter capability; Wireless telemetry for long distance communication; Specialized Power board for power distribution and current measuring; User configurable LED output with possibility to inform about low battery; Capability to use any R/C receiver; External signal module (Status board) for visual summary of aircraft condition; Integrated On Screen Display (OSD) for First Person View (FPV); You can find latest version of this manual from 2

3 Specification Input voltage: 6-18V Current consumption at 12V: Board only: 40mA Board with GPS, IMU, sonar: 80mA Switching voltage regulator for reduced heat dissipation. Operational temperature: 0 C C Dimensions: 50mm x 70mm Mounting holes: 3mm diameter, 45mm x 45mm Receiver channel count: 5 to 8 Motor count: up to 8 Camera gimbal outputs: pitch, roll, shutter Output for high current load (LED strips): 8A Firmware Multiwii compatible multicopter hardware. DIY OSD compatible OSD hardware with LM1881 video sync separator

4 Description Air Studio Control board Control board is Multiwii compatible hardware with ATmega2560 and some additional features: Dedicated output pin for high current load up to 8A (LED strips, and etc.) Third output (besides Pitch and Roll) for camera gimbal that can be used for camera Shutter control Integrated OSD controller with LM1881 sync detector that is compatible with DIY OSD and other open source OSD software that can use ATmega328P. OSD has serial connection to main controller for receiving sensor readings Integrated voltage divider for battery voltage measuring up to 4S LiPo, input for current and RC receiver RSSI measuring Air Studio Sense board Sense board contains ITG-3200 gyroscope, BMA180 accelerometer, HMC5883L magnetometer, MS5611 barometer and logic level converter. Sense board can be used with 5v host MCU and has integrated pullup resistors on both logic level lines. Air Studio GPS board This is low cost high performance GPS module with MediaTek MT3339 GPS chipset. It has built-in super capacitor for memory retention when power is disconnected. If GPS module is left without power for time less than 9 hours after power up it will get almost instant fix. Connector pin out of this GPS module is identical to many other modules. Pin No. Function 1 Not connected 2 GND 3 Transmit data 4 Receive data 5 +5V 6 GND 4

5 Prerequisites 1. Download and install CP210x serial port drivers from Vista_7.exe 2. Download and install Arduino from 3. Download AirStudio customized copter control firmware and configuration software from 4. Download and extract MultiWii WinGUI multicopter controller software from 5

6 Elements of the Set and Kit Flight Control Set includes following components: Control board Sense board GPS board Status board Power board Schema: 6

7 Flight Control Kit includes following components: Control board Sense board GPS board Schema: 7

8 Control board No Description 1 Receiver signal level input (RSSI) 2 Receiver inputs CH1 - CH8 (PPM input configurable on CH1) 3 Jumper for powering board from motor 1 ESC 4 Motor outputs M1 - M8 5 Camera gimbal outputs Pitch, Roll, Shutter 6 Sonar connector 7 Video connector 8 GPS connector 9 Telemetry connector (XBee, APC220, APC230 ) 10 IMU connector 11 LED connector 12 Power connector 13 Status indicator connector 14 Firmware upload target selection jumpers 15 Mini USB connector for firmware upload 16 Command line jumper (CLI) 17 Analog alternative inputs A1-A5 18 Sonar alternative connections 19 GPS alternative connections 20 ISP programming connections (for service use) 21 +5V power LED 22 Status LEDs A, B, C 23 OSD status LED Sense board (IMU) 8

9 Power board (Set only) Status board (Set only) A (Green) B (Yellow) C (Red) Solid = Armed, motors are live; Blink = Disarmed, motors will not spin with throttle up Active when Level mode is ON Solid = Lock, Blink = Waiting for Lock, OFF = No GPS connected or Serial received GPS board Features: MediaTek MT channel GPS chipset Dimensions: 38mm x 17mm x 8mm High sensitivity: Up to -165dBm tracking Position accuracy: < 3m Maximum update rate: up to 10Hz Time to fix: Hot Start 1 second typical Warm Start 33 seconds typical Cold Start 35 seconds typical Very low power consumption:25ma acquisition, 20mA tracking 9

10 Power supply: V Built-in supercap for RTC backup power to decrease Time To Fix after power reconnection Built-in patch antenna for reduced size Serial TTL Interface with default baud rate bps NMEA and Binary protocol Includes cable adapter Weight: 10 g 10

11 Uploading Controller firmware 1. Select Arduino target with jumpers to CTR 2. Copy folder MultiWii_2_1_air from ZIP file to Arduino sketchbook folder. 3. Run Arduino Open "MultiWii_2_1_air" 5. If needed configure parameters in "config.h" a. Frame type tri, quad, hexa, octa b. PPM Sum SERIAL_SUM_PPM c. 6. Select correct serial port and board "Arduino Mega 2560" 7. Upload Uploading OSD firmware 1. Select Arduino target with jumpers to OSD 2. Connect USB (Picture above) 3. Copy folder DIY_OSD_v0_18_1 from ZIP file to Arduino sketchbook folder. 4. Run Arduino Open "DIY_OSD_v0_18_1" 6. If needed configure parameters in "config.h" 7. Select correct serial port and board "Arduino Nano w/ ATmega328" 8. Upload 11

12 Configure board 9. Take off all propellers 10. Connect Sense board to IMU connector (10) 11. Decide how to power your board: From battery (3S; 4S LiPo) From Motor 1 ESC (connect jumper ESC POW ) WARNING!!! Do not use both power sources! Disconnect ESC POW jumper if powered from battery. 12. Connect at least one ESC to M1 connector to power receiver 13. Connect RC receiver Chanel mapping R1/PPM Throttle R2 Roll R3 Pitch R4 Yaw R5 Mode R6 Cam Pitch R7 CH7 R8 CH8 14. Connect Sense board (IMU) 15. Run MultiWiiWinGUI, choose serial port and speed

13 16. Click Connect 17. Configure modes on your control channel: Level should be your default mode unless you are experienced and know what you are doing. You can also set failsafe on your radio to match Return To Home. 18. Connect cables from ESC s to motor pin headers on board Motor layout and propeller rotation directions: 19. Balance your propellers! Unbalanced propellers induce vibrations that reduce copters ability to correctly detect attitude and the copter may lose stability in the air. 20. Calibrate your ESC s 13

14 21. To reduce 5v power consumption used from Control board voltage regulator that is designed for 300mA current and for increased electric noise stability some external components are powered from motor ESCs: a. Motor 1 ESC powers Receiver, Telemetry transceiver. If ESC POW jumper is shorted Motor 1 ESC also powers Control board b. Motor 2 ESC powers camera gimbal Pitch servo and Status board c. Motor 3 ESC powers camera gimbal Roll servo and Shutter servo 14

15 Before flight 22. Connect battery 23. Put your copter on level surface 24. Configure level for sensors by holding RC transmitter throttle stick down-left for approximately 15 seconds (status LEDs flash) (must be done once, repeat if needed) 25. Hold throttle stick down right (approx. 3s) to arm motors and then take-off 26. After flight hold throttle stick down-left (approx. 3s) to disarm motors 27. PIDs should be tuned for each type of multicopter frame to have best stability. OSD Control board has integrated OSD that receives data about sensor values from main controller and overlays them on video. PID tuning No Description 1 Coordinates (decimal degrees with N/S, E/W letters) 2 GPS satellite count used 3 Speed (km/h) 4 Distance and direction home (m) 5 Altitude (m) 6 Armed/Disarmed status 7 Low Battery warning 8 GPS fix warning 9 Controller flight mode 10 Flight timer 11 Orientation heading 12 Receiver signal level (RSSI %) 13 Current consumed from battery 14 Battery voltage 15 Battery mah consumed Default PID settings are suitable for the most multicopters, but still some PIDs might require some fine tuning (like altitude hold or position hold). PID settings depend on many factors and should be tuned for every multicopter configuration individually. Please see those online resources for information about PID tuning: 15

16 Connecting OSD Connecting LEDs 16