RoboBoom
Lukas Ziegler· December 19, 2025· 18:51

HOW AN OPEN-SOURCE HUMANOID ROBOT IS ACTUALLY BUILT

Lukas Ziegler, a robotics creator visiting Pollen Robotics in Bordeaux with the company’s team, explores how Reachy 2 and Reachy Mini are built, operated, and designed for open-source robotics.

In this talk

  1. 0:00

    Inside Pollen Robotics

    Ziegler visits Pollen Robotics in Bordeaux to see how the team builds its robots. Simon introduces the assembly areas and says Reachy Mini production is nearing the end of beta testing, with early units headed mainly to the United States and also to India.

  2. 4:43

    Learning tasks through demonstration

    The team describes training a robot with videos of a task and the corresponding joint positions. Rather than specifying every grasping step, they let it learn from demonstrations and successful attempts, comparing the process to showing a child how to do something.

  3. 5:55

    Teleoperation and interaction

    Richie demonstrates speech, dancing, eye tracking, and emotional gestures, including the Macarena and a heart shape. The team also shows teleoperation in a kitchen: the robot handles milk and sugar, while Ziegler remotely controls it to pick up and stack objects.

  4. 10:23

    How Reachy 2 improves on Reachy 1

    The team says about 100 Reachy 1 robots were shipped. Reachy 2 adds stronger arms, more cameras, stereo vision, and a time-of-flight camera; payload rises from roughly 300 grams on Reachy 1 to about 3 kilograms per arm on Reachy 2.

  5. 13:14

    Modular hands and an accessible desktop robot

    The Amazing Hand is an open-source, interchangeable option that can mirror finger movements through camera tracking, while modular software makes it easier to switch hand designs. Reachy Mini is a roughly $350 desktop kit with a moving head; its open design lets builders create their own exterior skins.

Briefs summarise talks and interviews; timestamps open the video at that moment. Claims in a talk are the speaker's own.

More talks