Small Size Humanoid Robot "PLEN & PLEN2 " ABOUT


PLEN is a small sized bipedal walking robot

The robot has 18 freely moveable joints and servomotor in order to provide for a range of action and stable movements. Since it's small in size, PLEN can balance well and cope with basic movements such as walking and getting up. Also, intricate movements like roller skating and skateboarding are possible.

PLEN is a wireless controllable robot

You can control it by bluetooth protocol through your PC and Smartphones. App for android "Scenography" and app for iOS "PLEN Connect" are an especially intelligible UI. By using it, complicated operations can be controlled more easily.

PLEN is a friendly robot

PLEN was named from the word plain meaning simple and plain. The name indicates a "simply shaped robot" that everyone imagines. PLEN was designed by pursuing a simple appearance and simple functionality.

PLEN Lineup


PLEN2 is a robot kit consisting control boards, servomotors and accessories that you can put together yourself. You do not need any technical knowledge and special tools. What you need to build this robot is just a screwdriver. When you complete it, PLEN2 is approx.20[cm] tall and weighs approx.450[g] with 18 joints and it is highly maneuverable.

3D data for the main components of the robot are provided at free of charge. Thus, using a 3D printer, anyone can customize the data and make their own original parts.

The control board of PLEN2 is an Arduino compatible control. Gadget lovers can easily do some programming and add function to PLEN2.

Control board for ROS MiddleWare are also lined up. Technical experts and researchers will be able to conduct fully-fledged robot development.

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PLEN went on sale in 2006 and two hundred models were made and sold. There are still no other small humanoid robots that can roller-skate and skateboard like PLEN.

PLEN.D is PLEN reprinted edition. It has been released in commemoration of the beginning of PLEN2.

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PLEN Specification

CPU Atmel ATmega32U4
Clock Rate 16[MHz]
Degrees of Freedom (Joints) Total 18
Ports USB
Communication Interface Bluetooth SMART
Time Is Operation 25[Minutes] (MAX)