Connect a Raspberry Pi to a Pixhawk running Ardupilot/PX4

We setup a Raspberry Pi 3 to be working as a companion PC for your autopilot, running Ardupilot/PX4.

My personal advise is not to use APM 2.x board. You need a 32 bit autopilot to get the best off Ardupilot. Find a few links below.

Find the Python Script: https://github.com/tizianofiorenzani/how_do_drones_work/blob/master/scripts/01_test_connect.py

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UPDATES AND ERRORS
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- When setting the serial port, in the file /boot/config.txt add the following line: dtoverlay=pi3-disable-bt

- DISABLE the Bluetooth to get ttyAMA0 (otherwise use ttyS0): edit /etc/modprobe.d/raspi-blacklist.conf

#- Bt
blacklist btbcm
blacklist hci_uart

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*** DISCLAIMER ***
I apologize for the audio quality. I learned my lessons from my mistakes
****

Raspberry Pi is a good starting point, due to the low cost and the great support from the community.

Download Raspbian Lite from here: https://www.raspberrypi.org/downloads/raspbian/

Otherwise you can chose Ubuntu from here: https://ubuntu-mate.org/raspberry-pi/

Connect the board to the Internet with an ethernet cable and plug a monitor and a keyboard. Once ready, login with pi/raspberry and open the raspi-config. Here just activate SSH and then reboot.

From here on we can complete the setup on a computer through SSH.

Connect the Raspberry Pi to the autopilot following the details here: http://ardupilot.org/dev/docs/raspberry-pi-via-mavlink.html

You need to download dronekit and compile it on the Raspberry Pi, in order to avoid annoying warning message in case you connect with both the companion pc and the ground station.

• Find the code on my GitHub: https://github.com/tizianofiorenzani/how_do_drones_work

***** How to get started *******

***Companion PC***
• Get a new Raspberry Pi 3 Model B+ : https://amzn.to/2WKYeW6
• Get a Raspberry Pi 3 Model B: https://amzn.to/2vBmAFQ

• Get 32Gb SD Card: https://amzn.to/2BoCTJ9
• Get a complete Diy kit for your Raspberry Pi projects: https://amzn.to/2KLhn38
***Autopilot***
• Get a professional Pixhawk 2.1: https://amzn.to/2OuwfoD

• Or a complete and affordable starter kit: https://amzn.to/2B2FMBA
A couple of pre-baked rpi images for ArduPilot are https://fnoop.github.io/maverick/#/ and http://ardupilot.org/dev/docs/apsync-intro.html

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