Stephen Dade
  • Male
  • Canberra, ACT
  • Australia
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Latest Activity

Stephen Dade replied to Kenn Zhang's discussion Can Pixhawk act as I2C Slave device?
"The Pixhawk uses the I2C bus for reading the compass (both internal and external) and pressure sensors (MS5611). These are on the #2 I2C bus You could perhaps use the #1 I2C bus, but I'm not sure if the Pixhawk supports being a slave on that…"
Jan 20
Stephen Dade replied to TJ Slim's discussion APM mini v3.1 Help with Terminal in Mission Planner
Jan 14
Stephen Dade replied to Joshua Lay's discussion Interfacing Pixhawk with Arduino
"UART = serial port, in this circumstance. No, this code isn't used to read values off the serial (UART) port. Quite the opposite - it reads analogue values and prints them to the serial port. It might be worth spending some time with some…"
Oct 24, 2015
Stephen Dade replied to sara abdelhamid's discussion quadqopter simulation programms in the group ArduCopter User Group
"The APM uses SITL (Software in the Loop) for simulation - http://dev.ardupilot.com/wiki/sitl-simulator-software-in-the-loop/"
Oct 24, 2015
Stephen Dade replied to Joshua Lay's discussion Interfacing Pixhawk with Arduino
"UART and I2C are different protocols. Both are used by Pixhawk - UART for GPS and telemetry, I2C for magnetometer and airspeed. If you're new to this, UART would be easier to understand as it is just sending simple text messages between…"
Oct 24, 2015
Stephen Dade replied to Joshua Lay's discussion Interfacing Pixhawk with Arduino
"You could use an Arduino to read in the 5 analogue readings and send them the the Pixhawk via UART (serial 4/5) or I2C."
Oct 24, 2015
Anthony F Hoy commented on Stephen Dade's blog post Quadcopter Workshop
"Do you mind telling me when you might have the opportunity to run another workshop please Stephen? I would very much appreciate being included. Thanks & regards   "
Oct 10, 2015
Stephen Dade replied to Patrick Nolan's discussion Custom HIL Program with ROS/Gazebo and Ardupilot
"Nice diagram! 1) I see you're building your custom middleware in C++. I would suggest looking at the source code to Mission Planner (C# is close to C++ anyway) to see how it sets parameters and adapting that for your application. Take a look at…"
Oct 1, 2015
Stephen Dade replied to Ethan's discussion How to set up a custom Mavlink message?
"Sending of mavlink messages is limited to a maximum of 10Hz in APM. Since you've got an on-board Rasberry Pi, it should be easier to just connect the lidar directly to it and let Dronekit read the data from there."
Sep 24, 2015
Stephen Dade replied to Ethan's discussion How to set up a custom Mavlink message?
"Is there a reason you need to use a custom message? there's already a mavlink message for lidar sensors - DISTANCE_SENSOR. Take a look at the .\libraries\AP_RangeFinder folder of the APM source code. There's plenty of examples of lidar…"
Sep 22, 2015
Stephen Dade replied to Patrick Nolan's discussion Setting HIL Mode Programmatically and getting motor/servo commands
"Ahh, my mistake! SERVO_OUTPUT_RAW is indeed what you need for reading the PWM outputs. I'm not too sure I understand you in regard to HIL mode. Are you using the PX4 Flight software or APM flight software on the Pixhawk?…"
Sep 18, 2015
Stephen Dade replied to Patrick Nolan's discussion Setting HIL Mode Programmatically and getting motor/servo commands
"Ahh, I see what you mean. I should have been more specific! RC_CHANNELS_SCALED is a "read-only" message showing what PWM values the APM is outputting. You are correct in that it's what values are sent to the servos or ESC's. If…"
Sep 18, 2015
Stephen Dade replied to Patrick Nolan's discussion Setting HIL Mode Programmatically and getting motor/servo commands
"Using the APM software on the Pixhawk: 1) Setting the HIL_MODE parameter to 1 will enable HIL mode on the next reboot. You will need GCS software to make this initial change. The APM will stay in HIL mode thereafter (unless HIL_MODE is set back to 0…"
Sep 18, 2015
Stephen Dade commented on Ben Dellar's blog post Comms Network for Multiple UAVs! West Coast UAV in the 2016 Outback Challenge
"Awesome! That's something we've been looking at too, but we've not go to the stage of practical tests yet (soon I hope). With the 900 MHz link from the GCS <-> Support UAV, were both telemetry streams using this link? Or were…"
Sep 18, 2015

300km
moglos commented on Stephen Dade's blog post Pixhawk (and APM) Power Consumption
"How do you disable the bright LED. Is there a parameter, or does it require some custom programming?"
Sep 13, 2015
Stephen Dade replied to Alex Elkman's discussion Major Crash with AltHold (failsafes did not work) [Flightlog provided]
"BarAlt = altitude according to barometer Alt = Filtered altitude (after combining with other altitude sensors and putting through a software filter) There may well have been a power issue with the Rx. Given that it came back on again, I'd lean…"
Sep 12, 2015

Profile Information

About Me:
Communications Engineer by day, creating UAV's by night.

I also do MAVProxy development in my space time.
Please tell us a bit about your UAV interest
I'm part of the CanberraUAV team, who came first place in the 2012 Outback Challenge.
Hometown:
Canberra

Stephen Dade's Blog

Pixhawk (and APM) Power Consumption

Posted on September 10, 2015 at 5:10am 10 Comments

For most people running electric vehicles, it has always been assumed that the motor(s) will always use far more power than the flight controller and associated control systems.

However, for those people running internal combustion engines (or gliders, balloons, etc) for long duration flights the…

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CanberraUAV's Future Plans

Posted on November 1, 2014 at 10:30pm 16 Comments

After our win at the 2014 UAV Outback Challenge and the many subsequent team discussions, CanberraUAV has developed a …

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CanberraUAV UAV Outback Challenge Review

Posted on October 8, 2014 at 6:16am 5 Comments

Now that we’ve returned to Canberra and taken a well-earned break, we have spent some time reviewing our performance at the OBC. The following article is a review of what we did and didn’t do well as a group at the OBC.…

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Outback Challenge 2014

Posted on September 9, 2014 at 6:00am 11 Comments

It's that time again!

With only 2 weeks until the UAV Outback Challenge (OBC) 2014, there is a record 20 teams from around the world ready to win the Challenge.

The OBC is a civilian UAV competition…

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