Alexander Grau

@UCuAuT-5HCxDaexAjUaMLKAg - 1.7K subscribers

All about owlRobotics and Grau GmbH projects and some private projects as well

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dynamic coverage mowing algorithm for robot (prototype)

dynamic coverage mowing algorithm for robot (prototype) Alexander Grau

113 views - 3 weeks ago

Using a single UWB-tag (and anchor) for a follow-me robot (very first test with some glitches)

Using a single UWB-tag (and anchor) for a follow-me robot (very first test with some glitches) Alexander Grau

161 views - 3 weeks ago

Can we use direction-finding based on RF-tags for our follow-me robot? I think this could work! :-)

Can we use direction-finding based on RF-tags for our follow-me robot? I think this could work! :-) Alexander Grau

95 views - 1 month ago

Testing the obstacle avoidance Python module (based on 2D LiDAR) for our follow-me robot (simulated)

Testing the obstacle avoidance Python module (based on 2D LiDAR) for our follow-me robot (simulated) Alexander Grau

112 views - 1 month ago

Do you know any other single camera VSLAM that can run on an OrangePI5PRO/Raspberry PI? Let me know🙂

Do you know any other single camera VSLAM that can run on an OrangePI5PRO/Raspberry PI? Let me know🙂 Alexander Grau

105 views - 1 month ago

testing image segmentation on RK3588S Rockchip NPU (OrangePI5Pro)

testing image segmentation on RK3588S Rockchip NPU (OrangePI5Pro) Alexander Grau

138 views - 5 months ago

Processing stereo camera input with "SuperPoint" on two Rockchip (RK3588) NPU cores (OrangePI5PRO)

Processing stereo camera input with "SuperPoint" on two Rockchip (RK3588) NPU cores (OrangePI5PRO) Alexander Grau

175 views - 5 months ago

Playing old piano rolls with a modern piano (with a little bit of cheating 🙃)

Playing old piano rolls with a modern piano (with a little bit of cheating 🙃) Alexander Grau

341 views - 6 months ago

(work-in-progress) DIY portable self-playing piano player device on a Wurlitzer piano - First song

(work-in-progress) DIY portable self-playing piano player device on a Wurlitzer piano - First song Alexander Grau

144 views - 6 months ago

DIY portable self-playing piano player device on a Wurlitzer piano - First test :-)

DIY portable self-playing piano player device on a Wurlitzer piano - First test :-) Alexander Grau

127 views - 6 months ago

Livox MID-360 variable LiDAR (905nm) rays pattern made visible using a camera without IR filter :-)

Livox MID-360 variable LiDAR (905nm) rays pattern made visible using a camera without IR filter :-) Alexander Grau

465 views - 7 months ago

Realtime colorizing Livox MID-360 pointcloud with an RGB camera (quick test)

Realtime colorizing Livox MID-360 pointcloud with an RGB camera (quick test) Alexander Grau

964 views - 8 months ago

Showcasing owlRobotics ROS-based Control Software for Driving Robots

Showcasing owlRobotics ROS-based Control Software for Driving Robots Alexander Grau

245 views - 9 months ago

ROS cleaning robot (new feature: explore map & clean at the same time)

ROS cleaning robot (new feature: explore map & clean at the same time) Alexander Grau

381 views - 1 year ago

ROS cleaning robot using region growing algorithm and simple insect-like decisions

ROS cleaning robot using region growing algorithm and simple insect-like decisions Alexander Grau

824 views - 1 year ago

Trying out Realtime Visual Stereo Odometry Pipeline with Python (=one part of a full Visual SLAM)

Trying out Realtime Visual Stereo Odometry Pipeline with Python (=one part of a full Visual SLAM) Alexander Grau

378 views - 1 year ago

Giving broken hoverboards a new life 😀: DIY 4WD robot platform using hoverboard hub motors

Giving broken hoverboards a new life 😀: DIY 4WD robot platform using hoverboard hub motors Alexander Grau

506 views - 1 year ago

TerraMow trajectory recording (60 minutes mowing, 60 sq-m)

TerraMow trajectory recording (60 minutes mowing, 60 sq-m) Alexander Grau

205 views - 1 year ago

TerraMow, can you pass a 0.43m tall (0.6m wide) tunnel? 😃 (if this is the only way allowed)

TerraMow, can you pass a 0.43m tall (0.6m wide) tunnel? 😃 (if this is the only way allowed) Alexander Grau

312 views - 1 year ago

TerraMow impressions - 6 hours mowing (300 sq-m) with a stereo camera- gets the job done, well done!

TerraMow impressions - 6 hours mowing (300 sq-m) with a stereo camera- gets the job done, well done! Alexander Grau

606 views - 1 year ago

robot 3D localization (6 DoF) for docking under a table using Livox MID-360 and DIY reflector tags

robot 3D localization (6 DoF) for docking under a table using Livox MID-360 and DIY reflector tags Alexander Grau

275 views - 1 year ago

lawn detection (global map) & obstacle detection (2m local map) with a stereo camera (in my hand)

lawn detection (global map) & obstacle detection (2m local map) with a stereo camera (in my hand) Alexander Grau

384 views - 1 year ago

lawn mapping and detection in complete garden with a stereo camera

lawn mapping and detection in complete garden with a stereo camera Alexander Grau

275 views - 1 year ago

lawn detection with a stereo camera

lawn detection with a stereo camera Alexander Grau

205 views - 1 year ago

Color stereo camera mapping with a consumer global shutter cam (SVPRO 3200x1200) and RTAB-MAP-ROS

Color stereo camera mapping with a consumer global shutter cam (SVPRO 3200x1200) and RTAB-MAP-ROS Alexander Grau

586 views - 1 year ago

Stereo-camera mapping test (monochrome global shutter/Realsense D435i, RTABMap-ROS)

Stereo-camera mapping test (monochrome global shutter/Realsense D435i, RTABMap-ROS) Alexander Grau

913 views - 1 year ago

Mowing test with modified Alfred robot mower (Livox MID-360 LiDAR and Raspberry PI 5, no RTK)

Mowing test with modified Alfred robot mower (Livox MID-360 LiDAR and Raspberry PI 5, no RTK) Alexander Grau

946 views - 1 year ago

Alfred/Sunray 3D LiDAR Livox MID-360 localization - precision test (repeated path)

Alfred/Sunray 3D LiDAR Livox MID-360 localization - precision test (repeated path) Alexander Grau

1.2K views - 1 year ago

Ardumower/Alfred Sunray firmware connected to ROS LiDAR 3D localization (without RTK/GPS)- first try

Ardumower/Alfred Sunray firmware connected to ROS LiDAR 3D localization (without RTK/GPS)- first try Alexander Grau

816 views - 1 year ago

robot 3D localization between seasons (and in partial maps) using Livox MID-360 on a Raspberry PI

robot 3D localization between seasons (and in partial maps) using Livox MID-360 on a Raspberry PI Alexander Grau

1.8K views - 2 years ago

'Monte-Carlo' 3D localization tracking and global localization (ROS)

'Monte-Carlo' 3D localization tracking and global localization (ROS) Alexander Grau

287 views - 2 years ago

bottle presence detection with a LiDAR camera (Intel Realsense L515) using Python and Open3D

bottle presence detection with a LiDAR camera (Intel Realsense L515) using Python and Open3D Alexander Grau

468 views - 2 years ago

Besides LiDAR odometry, we need (re-)localization e.g. after a robot was restarted at another place

Besides LiDAR odometry, we need (re-)localization e.g. after a robot was restarted at another place Alexander Grau

353 views - 2 years ago

Can a LiDAR sensor detect a small ball bouncing off a wall? We tried it using a Livox MID-360 sensor

Can a LiDAR sensor detect a small ball bouncing off a wall? We tried it using a Livox MID-360 sensor Alexander Grau

2.6K views - 2 years ago

30m apart traffic cone detection with Livox MID 360 (arbitrary number of cones at arbitrary places)

30m apart traffic cone detection with Livox MID 360 (arbitrary number of cones at arbitrary places) Alexander Grau

1.6K views - 2 years ago

Robot Path Tracking Controller - Auto Tuner (Stanley Control Autotune)

Robot Path Tracking Controller - Auto Tuner (Stanley Control Autotune) Alexander Grau

256 views - 2 years ago

robot 'cone' localization (up to 30m) with 4 traffic cones using a Livox Mid-360 LiDAR (360x59° FOV)

robot 'cone' localization (up to 30m) with 4 traffic cones using a Livox Mid-360 LiDAR (360x59° FOV) Alexander Grau

846 views - 2 years ago

Testing LeGO-LOAM variant (Github BOR fork) in challenging 3D environment (up and down a small hill)

Testing LeGO-LOAM variant (Github BOR fork) in challenging 3D environment (up and down a small hill) Alexander Grau

495 views - 2 years ago

3D LiDAR localization in a pre-mapped garden environment using a LeGO-LOAM variant (Github BOR fork)

3D LiDAR localization in a pre-mapped garden environment using a LeGO-LOAM variant (Github BOR fork) Alexander Grau

572 views - 2 years ago

Testing 3D SLAM (LeGO-LOAM) in the garden using a LSLiDAR C16 (can run on a Raspberry/Banana PI)

Testing 3D SLAM (LeGO-LOAM) in the garden using a LSLiDAR C16 (can run on a Raspberry/Banana PI) Alexander Grau

628 views - 2 years ago

outdoor realtime mapping & localization (3D SLAM) on a Banana/Raspberry PI using LSLIDAR C16

outdoor realtime mapping & localization (3D SLAM) on a Banana/Raspberry PI using LSLIDAR C16 Alexander Grau

749 views - 2 years ago

outdoor 3D person tracking at 20m distance in LiDAR point clouds (LSLIDAR C16)

outdoor 3D person tracking at 20m distance in LiDAR point clouds (LSLIDAR C16) Alexander Grau

429 views - 2 years ago

Driveway cleaning using an Ardumower RTK (robotic driveway cleaner) :-)

Driveway cleaning using an Ardumower RTK (robotic driveway cleaner) :-) Alexander Grau

1.4K views - 2 years ago

Making automated heatmaps (here: WiFi signal strength) of your garden with your Alfred/Ardumower 😀

Making automated heatmaps (here: WiFi signal strength) of your garden with your Alfred/Ardumower 😀 Alexander Grau

725 views - 3 years ago

owlDrive (brushless FOC controller): torque, velocity, position (+sync) control demo

owlDrive (brushless FOC controller): torque, velocity, position (+sync) control demo Alexander Grau

372 views - 3 years ago

parallel 3D person tracking in LiDAR point clouds (LSLIDAR C16)

parallel 3D person tracking in LiDAR point clouds (LSLIDAR C16) Alexander Grau

329 views - 3 years ago

Obstacle detection 'for free': visualization of non-ground objects (3D points) detected by LeGO-LOAM

Obstacle detection 'for free': visualization of non-ground objects (3D points) detected by LeGO-LOAM Alexander Grau

304 views - 3 years ago

DIY Mecanum platform with VLP-16 LiDAR - Testing virtual line-by-line tracking (ROS LeGO-LOAM)

DIY Mecanum platform with VLP-16 LiDAR - Testing virtual line-by-line tracking (ROS LeGO-LOAM) Alexander Grau

208 views - 3 years ago

Testing 3D SLAM robustness (LeGO-LOAM) on busy parking area (with a LSLIDAR C16 above my head)

Testing 3D SLAM robustness (LeGO-LOAM) on busy parking area (with a LSLIDAR C16 above my head) Alexander Grau

272 views - 3 years ago

When robots believe they can fly... (testing LeGO-LOAM with simulated Velodyne VLP-16)

When robots believe they can fly... (testing LeGO-LOAM with simulated Velodyne VLP-16) Alexander Grau

169 views - 3 years ago

2D motion tracking (x,y) in static 3D LiDAR (LSLIDAR C16) point clouds using Python and OpenCV

2D motion tracking (x,y) in static 3D LiDAR (LSLIDAR C16) point clouds using Python and OpenCV Alexander Grau

356 views - 3 years ago

3D localization (x,y,z) in ROS with Python and PCL using Velodyne VLP-16 LiDAR

3D localization (x,y,z) in ROS with Python and PCL using Velodyne VLP-16 LiDAR Alexander Grau

2.3K views - 3 years ago

OpenCV feature tracking (cm-precise) with floor-looking camera for localizing a robot

OpenCV feature tracking (cm-precise) with floor-looking camera for localizing a robot Alexander Grau

442 views - 3 years ago

(at the floor looking) single camera-based perimeter (ribbon) detection for robotics

(at the floor looking) single camera-based perimeter (ribbon) detection for robotics Alexander Grau

220 views - 3 years ago

OpenCV feature tracking (cm-precise) with floor-looking camera for localizing a robot

OpenCV feature tracking (cm-precise) with floor-looking camera for localizing a robot Alexander Grau

282 views - 3 years ago

Alfred/Ardumower Sunray firmware (future version preview): showing discovered obstacles in the map

Alfred/Ardumower Sunray firmware (future version preview): showing discovered obstacles in the map Alexander Grau

584 views - 3 years ago

Robotics (virtual path following) within area defined by 4x Marvelmind ultrasonic beacons

Robotics (virtual path following) within area defined by 4x Marvelmind ultrasonic beacons Alexander Grau

330 views - 3 years ago

Sunray firmware simulator testing (teaching Alfred/Ardumower new tricks :-))

Sunray firmware simulator testing (teaching Alfred/Ardumower new tricks :-)) Alexander Grau

757 views - 3 years ago

Alfred robot mower: Bluetooth manual steering (virtual joystick) demo

Alfred robot mower: Bluetooth manual steering (virtual joystick) demo Alexander Grau

266 views - 3 years ago

DIY point soldering robot for our batch PCB THT (through-hole) soldering jobs :-)(work-in-progress)

DIY point soldering robot for our batch PCB THT (through-hole) soldering jobs :-)(work-in-progress) Alexander Grau

202 views - 3 years ago