This AR4-based “HandyBot” understands voice commands to autonomously pick/place tabletop objects using cutting-edge AI vision (Grounding DINO, Segment Anything) and OpenAI Whisper speech recognition. The $2300 system combines an AR4 arm, RealSense D435 camera, and custom ROS 2 pipeline for real-world object interaction.

🔗 Build it yourself: GitHub Repo
💬 Discuss the ROS driver: Community Thread

Curiosity, I wanted to learn the technology underlying Arm Robots. How they built, operated, and controlled. I purchased it in November and had some difficulties at customs while attempting to explain all of the components and their purposes. It took about 6 hours of official paperwork and processing. The building process was hectic, and there was no room for error because spare components are not available in Jordan. Overall, it worth the time and the effort.

an AR4 robotic arm into a precision soldering system using an MK8 extruder with pneumatic coupler for consistent solder feeding. The wrist-mounted design maintains TCP accuracy during material changes, achieving professional-grade solder joints at 2mm/s linear speed with 1 arc/s rotation.

Goal: Replace manual part handling with automated systems for efficiency/consistency.

Challenges: Retrofitting old drilling machine with Arduino-controlled pneumatics.

Results:

CNC machine: Reliable 15-minute cycles over 3 months.

Drilling machine: 40-second cycles with zero downtime in first week.

Long-Term Testing: Monitoring performance under 8-hour daily operation.

So I started this journey about 8 months ago.  My objective is to have a robot to place books into a box ready for shipment.  I first got a little robot off of Amazon for 1000 bucks, it was maybe worth 100.  I was able to get it to move a piece of paper from one location to another, so I knew I was onto something.  After looking for something more stable, I happened upon Annin Robotics and the marvelous AR4.  I spoke with my partner and ordered the kit and motor kit about 5 months ago.

It took a couple of weeks working in the evenings and 3d printing parts and the robot was built.  I then watched the programing videos and went to work.  I did run into several programming issues, I don’t know if these are limitations of the Annin software or not, but I can’t get past a couple of them.  I have found workarounds for most, though draws out programming and now operation.

The bookstacker is now working it’s happy little claw off. 

This

i was inspired by the project and i wanted to build an robot to implement in the factory where i work, but the new manager was not so convinced and i kept working on robot. at first was 3d printed and after i was able to manufacture the robot from aluminium.