Bebop

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Parrot Bebop


Introduction

By default the Bebop from Parrot is a Wifi controlled flying quadrotor, designed to be controlled with an Android or iOS device.

No more restrictions as from now; with a few simple clicks you can run Paparazzi on the Bebop and have full autonomous flight and much more!

Getting started

What you need

  1. A Bebop or Bebop 2 updated to at least firmware v3.3.0
  2. A joystick, for example this one
  3. A laptop with Ubuntu installed

Steps to follow:

  1. Install Paparazzi via the one liner to be found here. Just Cut 'n Paste (CTRL+C from webbrowser then CTRL+SHIFT+V in your Linux terminal) and press ENTER
  2. Start Paparazzi Center with the default configuration
  3. Power up your Bebop
  4. Press the on/off button four times short fast half a second clicks after the bebop is fully powerd up, notice the solid green light on Bebop and solid Red on Bebop 2
  5. Make a Wifi connection with your PC and the Bebop
  6. In the Paparazzi center choose "Bebop" Or "Bebop2" in the airframe dropdown menu
  7. Press the "Upload" button in the Paparazzi Center, wait...
  8. Select Flight UDP/Wifi in the session menu
  9. Press execute

Voila, you will get telemetry from your Bebop. Now it is up to you how and where to fly.

Instruction Video

TIP: Good video series to watch. Although it is made for the ARDrone 2, the steps are very similar for the Bebop drone.

Extras

This site has several documents on how to program something for your drone Although these documents assume you have an indoor flight area, you can also fly outside with the internal GPS of the Bebop. For this you have to change your GPS device in you airframe

If you need help with any of the steps, you can post a question on the mailing list or have a Gitter chat.

Features

Connectivity

  • Wi-Fi antennas: MIMO dual-band with 2 double-set of dipole antennas for 2.4 and 5 GHz
  • Sending power: Up to 26 dBm
  • Signal range: N/A

Structure

  • 4 Brushless Outrunner motors
  • Glass fiber reinforced (15%) ABS structure
  • High-resistance EPP outdoor hull: Clip and unclip easily to adapt to indoor and outdoor flight, protects the propellers against potential bumps, can be removed to reduce wind factor
  • Three-blade auto-block propellers in Polycarbonate with fast disassembly system
  • Anti-vibration bumpers

Full Motor details

Handy in case for a simulator motor model

Bebop

  • Magnets: 12
  • Stators: 9
  • Layers of stator metal: 15
  • Copper windings: 34
  • Copper diameter: 0.29mm
  • Copper resistance: over 50 cm wire ~0.3 ohm

Dimentions:

  • Flange height 7.67mm
  • Flange dia22.7mm
  • Axis length 19.4mm
  • Axis dia 1.9 mm
  • Statorheight 5.55mm
  • Stator diam 18.33mm

Weight:

  • Flange weight 3.05g
  • Flange and magnets 5.15g (Magnet ~ 1.5mm thick on a Flange dia22.7mm)
  • Magnet only (and the glue) 2.1g

Bebop 2

  • No dat (yet) It ould be nice if you could demolish on of your Bebop 2 motors or a spare one and add your data here.

Camera

  • Camera with "Fisheye" lens 180° 1/2,3": 6 optical elements and 14 Mega pixels sensor
  • Video stabilization: Digital on 3-axes
  • Video definition: 1920x1080p (30fps)
  • Photo definition: 3800x3188 pixels
  • Video encoding: H264
  • Photo file format: RAW, DNG
  • Internal memory: Flash 8 GB
  • Extended memory: Micro USB

Battery

  • Lithium Polymer 1200 mAh
  • Flight time: Around 12 minutes

Processor

  • Motherboard:
    • Parrot P7 dual-core CPU Cortex A9
    • Quad core GPU
    • 8Gb flash memory
  • All fixed on a magnesium shelf that acts as electromagnetic shielding and in the same run as a heat sink for heat dissipation and cooling of the all the onboard processors

Sensors

  • 3-axes magnetometer (AKM 8963)
  • 3-axes gyroscope (MPU 6050)
  • 3-axes accelerometer (MPU 6050)
  • Optical-flow sensor (Fig.8): Vertical stabilization camera (Every 16 milliseconds, an image of the ground is taken and compared to the previous one to determine the speed of the Bebop Drone)
  • Ultrasound sensor (Analyzes the flight altitude up to 8 meters)
  • Pressure sensor (MS 5607)

Geo-location

  • Bebop 1: GNSS (GPS + GLONASS + Galileo, Furuno GN-87F)
  • Bebop 2: GNSS (GPS + GLONASS + Galileo, Baidu, [1])

Dimensions

  • 28x32x3.6cm without the hull
  • 33x38x3.6cm with the hull

Weight

  • 380g without the hull
  • 400g with the hull

OS/Software

  • Operating system: Linux (kernel 3.4.11 #3 SMP PREEMPT)
  • glibc: (Sourcery CodeBench Lite 2012.03-57) 2.15
  • libstdc++: GLIBCXX_3.4 - GLIBCXX_3.4.16

Pinout

GPIO

  • 6 Fans Enable
  • 9 WiFi Reset
  • 73 P7MU IRQ
  • 81 GPS Power Enable
  • 85 Fan Enable
  • 89 VCAM FSYNC gyro
  • 90 HCAM FSYNC gyro
  • 91 DRDY MPU6050
  • 124 Magneto interrupt
  • 128 (video) Slew rate??
  • 129 VCAM enable
  • 130 (video) Slew rate??
  • 132 HCAM enable
  • 199 BLDC micro-controller reset (forces it into bootloader) ON/OFF
  • 200 US Pulse level
  • 201 On/Off button (default monitor to files running: /bin/onoffbutton)
  • 202 USB Host mode pin 3V3 (HOST_MODE_3V3)
  • 203 USB Host mode on
  • 204 USB0 OC

PWM

  • 6 Heating resistor for warming IMU sensors (125000ns period, 0ns duty)
  • 8 MPU6050 clock (31510ns period, 15258ns duty) Desired frequency is 32768kHz with 50% duty cycle (period=30517us). Period was set empirically to 31517 to get a 5ms data ready period. Desired frequency is slightly modified to synchronize camera and IMU
  • 9 Vertical camera clock (23ns period = 43MHz)
  • 11 Horizontal camera lock (77ns period = 13MHz)

I2C

  • I2C-0
    • FPGA
    • P7MU
    • EEPROM Unknown EEPROM for Front camera calibration (addr 0x55)
    • MT9f002 CMOS Digital Image Sensor (1/2.3 inch 14Mp, front camera) MT9f002 (addr 0x10)
    • MT9v117 CMOS Digital Image Sensor (1/6 inch VGA, bottom camera) MT9v117 (addr 0x5d)
  • I2C-1
    • Cypress Motor Controller (Parrot BLDC) Bebop/BLDC (addr 0x08)
    • AKM8963 Magnetometer AK8963
    • MS5607 Barometer MS5607
  • I2C-2
    • MPU6050 Gyro + Accel MPU6050 (rotation changed in version 2)

SPI

  • spidev1.0 Sonar (Only data pin connected for generating pulses)

UART

  • ttyPA1 GPS (Furuno GN-87F on v1 and Ublox Neo M8N on v2)

Other

  • /dev/hx280 Hantro (On2) Video encoder. Hantro chip video encoder used for the HCAM.
  • /sys/bus/iio/devices/iio:device0 (p7mu-adc_2) Sonar ADC

Actuators

The Bebop has 4 Brushless motors, which are controlled by the cypress chip on I2C-1. This Cypress chip contains custom made firmware(BLDC) by Parrot, which can be automatically updated using a bootloader in the ESC part of the mainboard. The firmware from Parrot contains a nice closed loop RPM control, which is automatically tuned inside the factory. Since version 2 Parrot changed the order and rotation direction of the motors.

For more information about how to communicate with the BLDC look at Bebop/BLDC. Or take a look at the "bebop" actuator inside the airborne/boards/bebop/ folder.

Onboard applications

The original programs on the Bebop

  • /usr/bin/dragon-prog Main program that controls the drone
  • /bin/watchdog.sh Checks if Dragon is still running and reboots dragon-prog if it somehow would not be running anymore
  • BLDC_Test_Bench Controls the Brushless Motor Controllers for testing and playing sounds etc.
  • bcmwl Everything with wifi
  • diagnostic Outputs sensor diagnostic
  • mk3_camera_eeprom Reads the front camera EEPROM
  • config_mt9v117 Configure the bottom camera

Cross compiler

For the Bebop you need to use a recent version GNU gcc-arm-linux-gnueabi (Ubuntu/Linaro 4.7.4-2ubuntu1) 4.7.4 provided with Ubuntu since 14.04 LTS.

the past you could also crosscompile with Sourcery CodeBench Lite 2012.03-57 for ARM GNU/Linux from Greedy Mentor Graphics, previously called codesourcery. However the open'ness there is nowhere to be found anymore, so we'll say "No thanks" to Codesourcery ,now Greedy Mentor" but if you insist , feel free restricted.

Tips & Tricks

Video

Make sure the video_rtp_stream.xml module enabled in the airframe. Receive a video stream with e.g. avplay, vlc or a python app:

$ avplay -loglevel quiet -max_delay 50 -fflags nobuffer rtp://192.168.42.1:5000
$ vlc ~/paparazzi/var/sdp_tmp/192.168.42.1/stream.sdp
$ ~/paparazzi/sw/tools/rtp_viewer/rtp_viewer.py

Factory Reset

You can reset the Parrot Bebop Drone to factory settings. You will loose all your photos and movies recorded on your Bebop. To do this you need to press and hold the power button for 10 seconds. The LED will blink green and orange for a while, then green and the drone will shutdown.

Firmware

Theoretically is is not important which firmware you use for Paparazzi to fly. But with the latest firware we get better Video imagery. So if you can.. use the latest firmware.

The Paparazzi volunteers test flew the Bebop with Firmware v1.98.11 and v2.0.57, v3.0, v3.2, v3.3, v3.9, v4.0.3

Note that under v4.0.3 the Front cam doesn't work (yet..) so if you need video imagery and have a Bebop 2 do not update to v4.x just yet. Or better fix the camera not working issue...

The v3.3.0 is the latest firmware version know as of 20170309 for Bebop 1. For bebop 2 Latest know is v4.0.3 If even newer firmware is available please report any (if any) issues found related to the firmware on e.g. the mailinglist.

Damper

The original Bebop2 damper are very soft and can cause oscillations around roll. You can print harder dampers from Thingiverse yourself that will degrade the video quality but remove these oscillations. Use the _nodamp airframe files in that case.

Using the MicroUSB for serial data

The Bebop has this tiny USB connector just above the power button. This USB connector can also be used with help of a USB to Serial FTDI conversion board. To use the driver in current firmware OTG serving should be off. More information, photos, connection examples, sourcode and real life example of how to use this port.