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We are developing a custom differential-drive Autonomous Mobile Robot (AMR) / Automated Guided Vehicle (AGV) with a payload capacity of 100kg–200kg. The navigation stack structure is completely in place, but we are facing critical software timing and coordinate frame tracking issues that prevent the local planner from executing smooth velocity commands.

We need an experienced ROS Navigation / TF Expert to dive into our launch and configuration files, synchronize our clock sources, and get the robot navigating cleanly.

Current Symptoms
The Core Error: The robot freezes or stutters violently, throwing continuous Extrapolation Error: Lookup would require extrapolation into the future warnings when looking up transforms from odom to map.

Path Following Failures: The local planner keeps losing the global plan and fails to steer safely around corners or follow targets.

Obstacle Blindness: The robot occasionally ignores physical walls or obstacles because sensor data projection timing mismatches corrupt the local costmap.

Technical Stack
OS / Framework: ROS 1 (Melodic/Noetic) running on an Ubuntu x86 Wyse Terminal.

Localization & Mapping: AMCL and map_server.

Navigation Stack: move_base with NavfnROS (Global Planner) and DWAPlannerROS (Local Planner).

Sensors: 2D LiDAR (/scan_filter topic) and

Skills: Python, Data Processing, C++ Programming, Robotics, Ubuntu, Artificial Intelligence, Embedded Systems, Computer Vision, Simulation, Robot Operating System (ROS)

Hello!

May I ask you a few questions? I would really appreciate it. Thank you in advance.

Benton T.

I need an experienced robotics software engineer or integration consultant to support an early-stage robotics project.
The work is part-time and can be remote. The initial requirement is to review robot SDK/API documentation, advise on the correct technical setup, and help design safe, repeatable workflows using existing robot hardware.
This is not a project to build a robot from scratch. I need someone who can work with existing robotics platforms, SDKs and APIs, then help develop practical control, monitoring and demonstration workflows.
Initial work may include:

* Reviewing robot SDK/API documentation
* Advising on the correct development environment
* Recommending hardware/software setup
* Creating simple control or monitoring tools
* Supporting camera/sensor capture workflows
* Advising on safe scripted demo routines
* Supporting remote testing and debugging
* Estimating development time for a first proof-of-concept
Required skills:
* ROS or ROS 2
* Python
* C++
* Linux / Ubuntu
* Robotics SDK/API integration
* Git / GitHub
* SSH and remote debugging
* Experience working with real robot hardware
Strongly preferred:
* Humanoid or quadruped robot experience
* Unitree SDK experience
* Mobile robotics experience
* Computer vision
* Depth cameras, LiDAR or sensor integration
* Motion planning / navigation
* SLAM / mapping
* Teleoperation
* Docker
* NVIDIA Jetson or edge AI devices
* Gazebo, Isaac Sim or similar simulation tools
This role can be mainly remote. A local operator will handle the physical robot during testing where required. You should be comfortable supporting remotely via video, logs, SSH and development tools.
I would like to start with a small paid discovery phase of 5–10 hours to review the technical requirements, advise on SDK/API setup, recommend practical demo workflows, identify risks or limitations, and estimate the work needed for a first proof-of-concept.
Please include:

1. Your robotics experience
2. Your ROS / ROS 2 experience
3. Your Python and C++ experience
4. Any humanoid, quadruped or Unitree experience
5. Examples of real robot hardware you have worked with
6. Whether you can support remotely through video, logs and SSH
7. Your hourly or day rate
8. Your availability over the next 4–6 weeks
Please start your reply with “Robot SDK” so I know you have read the brief.

I'm looking for an experienced professional to operate an industrial robot using a teach pendant.

Key Responsibilities:
- Direct the robot to specific locations and tasks using the teach pendant.

Ideal Skills and Experience:
- Proficiency in operating industrial robots.
- Experience with teach pendants.
- Attention to detail and precision in task execution.

Please provide details of your relevant experience.

Skills: Robotics, Industrial Engineering, Programming, Robotic Process Automation, Control Engineering, Machine Vision / Video Analytics, Automation, Robot Operating System (ROS)

I need an experienced PCB designer to create a schematic and PCB layout for an acoustic monitoring device. Signal integrity and low noise are critical.

Total = $250, but paid step-by-step

• How do you incorporate feedback and changes into your work?

Title: Need PX4 Developer to Add Servo Dropper & Identify Drone Ports

Description:
Hi,

I have a drone running on custom PX4 firmware, and I need help adding new features, specifically a servo dropper. However, I have limited experience with PX4 development and don't know the exact functions of the available ports on my drone.

What I Need:
Analyze & Identify Ports: Help me understand the available ports on my drone and their functions.
Add Servo Dropper Support: Modify the PX4 firmware to integrate and control a servo dropper.
Guide on Implementation: Provide guidance on how I can test and configure the changes properly.
Maintain Existing Flight Performance: Ensure that the current drone settings (including PID tuning) remain unchanged after modifications.
Skills Required:
Experience with PX4 firmware development
Embedded systems & drone hardware integration
MAVLink / UAVCAN protocol knowledge (preferred)
Ability to read circuit diagrams and identify port functionalities
Experience with QGroundControl / Mission Planner
If you have experience in PX4 firmware customization and drone integrations, I'd love to discuss the project further. Please let me know your experience, estimated timeline, and cost.

Looking forward to working with you!

Skills: Microcontroller, Mechatronics, Drones, Robotics and Cognitive Automation, Robot Operating System (ROS)

TrueSense IO is developing RailSense — a self-contained railway infrastructure monitoring
sensor measuring track tilt, vibration, and temperature. The device transmits directly to satellite
via Bluetooth Low Energy, with no gateway, no cellular, and no mains power. It must operate for
8–10 years on a primary lithium battery pack.
We need an experienced hardware/PCB engineer to take our locked component architecture
through schematic capture, PCB layout, and prototype-ready output files — optimised above all
else for ultra-low power consumption.