Mateusz Sadowski
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  • Geneva
  • Switzerland
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Job opportunity at Terabee

Started this discussion. Last reply by Mateusz Sadowski Apr 12, 2018. 1 Reply

About us:Terabee is a multi-award winning startup that designs, develops and produces the world’s smallest, lightest and fastest sensors and sensing solutions for advanced robotics. With a particular…Continue

How to read acceleration from APM using mavlink (c++)?

Started this discussion. Last reply by Fernando Lima Saraiva Filho Apr 25, 2017. 19 Replies

Hello all,Recently I started working with APM and mavlink. I'm trying to get attitude and acceleration data from APM via USB. So far I was able to receive RPY data correctly but I can't seem to be…Continue

Tags: mavlink, APM

 

Mateusz Sadowski's Page

Profile Information

Please tell us a bit about your UAV interest
Drone and Robotics Consultant based in Geneva Area (also available for remote help).
Blog: https://msadowski.github.io/
Website: http://msadowski.ch/
WeeklyRobotics: https://weeklyrobotics.com/
Hometown:
Krakow, Poland

Latest Activity

Mateusz Sadowski commented on Dmitry Skotnikov's blog post Your In-Flight Wireless Charging Solution for Drones
"Interesting! What kind of battery are you using on the quad? Are there any side effects of charging a 22Ah battery at 150A?"
Friday
Mateusz Sadowski commented on Echo G's blog post Thinking about designing multirotors to optimizing flight time
"In my first internship I was testing various propeller - motor combinations to plot the thrust to power ratio. Good times!"
Oct 4
Mateusz Sadowski commented on Patrick Poirier's blog post Autonomous Flying using the RealSense T265 Tracking Camera in GPS Denied Environment
"Also @Patrick: when you copied the lab description by mistake you also copied the number of clicks, making it a bit confusing about "ROS 2" based labs (I got quite excited for a second!)"
Jun 26
Mateusz Sadowski commented on Patrick Poirier's blog post Autonomous Flying using the RealSense T265 Tracking Camera in GPS Denied Environment
"WOW! Great job! I strongly believe that combining ROS and ArduPilot can result in really powerful applications. Are there any plans to host those tutorials outside of ArduPilot forums? I'll be sharing the information about the labs in the next…"
Jun 26
d j commented on Mateusz Sadowski's blog post YDLIDAR X2 - $69 LiDAR review
"@Mateusz Sadowski "YDLIDAR X2 - $69 LiDAR review vs. "Price ~89 USD where did you get your price from ?"
Jun 3
d j commented on Mateusz Sadowski's blog post YDLIDAR X2 - $69 LiDAR review
"@Mateusz Sadowski I would prefer single optical path version of lidar to get better resolution and sensitivity from http://www.eaibot.com/ G4 16m scanning range       - stays for what ? scanning rate…"
May 31
d j commented on Mateusz Sadowski's blog post YDLIDAR X2 - $69 LiDAR review
"Thank you. If I understand correctly, this lidar pulsates at 5-8Hz max. if static or rotating, so is very very slow , why ? "Range frequency - 3000 - Hz 3000 times/s or "Range frequency - term stays for what ? "Also if we are…"
May 29
Mateusz Sadowski commented on Mateusz Sadowski's blog post YDLIDAR X2 - $69 LiDAR review
"The scan frequency is ~7Hz therefore we can assume that LiDAR needs to rotate once to collect a single scan. This means that the rotations speed is 7RPS * 60 = 420 RPM Also if we are collecting 3000 samples per second and the LiDAR does 7 rotations…"
May 29
d j commented on Mateusz Sadowski's blog post YDLIDAR X2 - $69 LiDAR review
"@Mateusz Sadowski I would like to experiment with automatic parking system for a real car, pretested in R/C one as a testbed. This unit is intended for indoor use but in theory can be operated in outdoor under no rain, no frost conditions. I would…"
May 29
Mateusz Sadowski posted a blog post

YDLIDAR X2 - $69 LiDAR review

Hi guys! I recently had a chance to test out YDLIDAR X2, that could be a cheaper alternative to RPLIDAR. Here are some of the characteristics of this unit:ParameterValueScanning range360°Range0.1-8mRange resolution2% of distanceScan frequency5-8HzRange frequency3000HzMax current500mALaser wavelength775-795nmLaser power3-5mWPrice~89 USDI only tested it for an indoor SLAM (with ROS and Google Cartographer) getting a result as you can see aboveI think this sensor might be an interesting option…See More
May 29
Mateusz Sadowski commented on Mateusz Sadowski's blog post YDLIDAR X2 - $89 LiDAR review
"You would install it on a real car or an R/C one? If it's a proper car then I suggest you don't use this LiDAR, it's a maker quality tool not suitable for safety applications. If my calculations are correct you should get about…"
May 29
d j commented on Mateusz Sadowski's blog post YDLIDAR X2 - $89 LiDAR review
"@Mateusz Sadowski Interested to buy YDLIDAR X2 and install it on roof top of my car, if fit to work in outdoor to build basic, obstacle avoidance safety system. Tell me what number of points can be scanned for a single full 360° turn and…"
May 28

3D Robotics
Chris Anderson commented on Mateusz Sadowski's blog post YDLIDAR X2 - $89 LiDAR review
"Thanks Stefan! Looks well done"
May 25
Mateusz Sadowski commented on Mateusz Sadowski's blog post YDLIDAR X2 - $89 LiDAR review
"Chris I tried to find any YDLIDAR python libraries but apart from the one linked by Stefan I couldn't locate any.  The PyLidar3 doesn't seem to support YDLIDAR X2 just yet. The oficial SDK for YDLIDAR seem to be this one and…"
May 25
Stefan Mürzl commented on Mateusz Sadowski's blog post YDLIDAR X2 - $89 LiDAR review
"There is a 3rd party project which supports ydlidar https://github.com/lakshmanmallidi/PyLidar3"
May 24

3D Robotics
Chris Anderson commented on Mateusz Sadowski's blog post YDLIDAR X2 - $89 LiDAR review
"Great to see this review. I've been using the RPLidar products for a while and while I like them, their Python support is weak. I don't want to have to use ROS (overkill for my projects). What do you think of the YDLidar Python libraries?"
May 24

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Mateusz Sadowski's Blog

YDLIDAR X2 - $69 LiDAR review

Posted on May 24, 2019 at 2:00am 11 Comments

Hi guys!



I recently had a chance to test out YDLIDAR X2, that could be a cheaper alternative to RPLIDAR. Here are some of the characteristics of this unit:

Parameter Value
Scanning…
Continue

Livox Mid-40 LiDAR short review

Posted on February 18, 2019 at 12:30am 5 Comments

Hi guys! Recently I had a chance to experiment with Livox Mid-40 - a 230 m range LiDAR using rotational Risley Prisms.

I thought I would share my findings with the community in case it can be considered a viable scanning solution!

The first thing to note about this unit is the weight of 710g that could be a blocker for smaller UAVs. The scanning field of view is 38.4° (circular) and the scanning pattern is as follows:…

Continue

Indoor Obstacle Avoidance with ArduCopter and TeraRanger sensors

Posted on February 21, 2018 at 2:00am 2 Comments

At Terabee we did some intensive experiments with TeraRanger Tower and Pixhawk running ArduCopter. The purpose of the experiment was to explore the obstacle avoidance indoors using rangefinders only.

In our setup we used TeraRanger Tower with 8 sensors (in a…

Continue

UAV control using Novint Falcon haptic device

Posted on March 1, 2017 at 2:24pm 0 Comments

In the last two months I was exploring an idea of using a haptic device to control a multirotor. Here is the video I made showing the system working in simulation:

The setup

For the simulation I used Px4 SITL running with jMAVSim. For interfacing with Px4 I'm using mavos + two…

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