The 8 Best Programmable Robotic Arms

A first serious robotics project suits the Hiwonder xArm 1S, a six-joint aluminum arm whose servos report their position, so you can pose it by hand and save the moves. You can drive it from a PC, a phone app or the included wireless gamepad, and chain moves together in a drag-and-drop editor. Suction cups hold it to the table. It comes as a kit, and support for typed code is thin.

If you want to write code, not just record moves, the Waveshare RoArm-M2-S is built for you. The carbon fiber and aluminum arm has precise servos, two of them at the shoulder for strength. It serves its own control page over Wi-Fi, takes typed commands over USB or the network, and comes with Python, Arduino and Robot Operating System examples. It can miss a spot by a few millimeters, and four joints limit how the gripper can angle.

Stepper motors and a metal frame replace micro servos in the Freenove FNK0036, which Freenove says keeps the tip within a millimeter with no load. A Raspberry Pi runs it, but you supply the Pi and the battery. It can record and replay moves, or turn a picture into pen strokes in drawing mode, and the tutorial and Python code are free online. Accuracy falls as the load rises, and there's no paper manual.

The Adeept ADA031 is a five-joint acrylic kit that teaches Arduino from the ground up for little money. Its board works like an Arduino Uno, so you code it in C or C++ in the usual Arduino software. Knobs move the joints by hand, a small screen shows status, and PC software adds mouse control, drawing and record-and-replay, with a long tutorial. The plastic frame suits light objects only, and assembly takes a few hours.

The Hiwonder MaxArm arrives assembled, with an open controller you can program in Python or Arduino code. Its linkage design copies warehouse stacking arms, and built-in math lets you send it a target spot instead of joint angles. The tool is a suction cup fed by an air pump, and a phone app lets you play before writing code. It has only four axes, and suction works best on flat, smooth objects.

The Hiwonder SO-ARM101 is a ready-built version of the open-source SO-101, the arm Hugging Face's LeRobot project uses to teach robots by demonstration. You move the leader arm by hand, the follower copies it, and the software records those moves with camera video to train a program that repeats the task alone. Both arms and two cameras come assembled. Expect Python, calibrating each motor and a capable computer for training, and building one yourself costs about half as much.

A budget way to learn how joints and a gripper work together, the Hiwonder LeArm is a six-joint metal arm. Clutches in the claw-end servos slip instead of stripping when the arm hits something. You can run it from a PC, a phone app or the included gamepad, and the PC software saves moves as groups. The servos don't report their position, so you can't teach it by posing it, and typed coding is limited.

Classes on industrial automation suit the Wlkata Mirobot Professional, a small six-joint arm that works like a scaled-down factory robot. Wlkata says its geared stepper motors return it to the same spot within a fraction of a millimeter. The kit adds a handheld teach controller, a gripper, a suction set, a pen holder and a box for sensors and conveyors. The price is steep, and the full kit is heavy.