Raspberry Pi 4 based robot targets manipulation and service tasks


Pollen Robotics is launching a modular, open supply “Reachy” robotic that runs Raspbian and Luos on a Raspberry Pi Four with Google’s Coral AI Accelerator. The torso-like bot has one or two articulated, 7-DoF arms with pincers and a ball-joint head with twin cams.

French robotics agency Pollen Robotics has opened restricted pre-orders for an open-spec robotic for R&D, public hospitality and repair, and fundamental manipulation duties. The human torso sized Reachy is constructed from modular, MCU-driven elements that talk with one another utilizing the Luos distributed OS (see farther under). Reachy is touted as “the one humanoid service robotic that’s open supply and might manipulate objects.”

Reachy displaying 7-DoF arm and portray abilities in YouTube demo photographs
(click on photos to enlarge)

Reachy can run AI algorithms together with picture and voice recognition routines and has self-learning capabilities. It has an expressive head with twin cameras that makes use of an “Orbita” ball-joint mounting know-how developed by Pollen for multi-directional, 180-degree motion. The “bio-inspired.” 7 Levels of Freedom (DoF) arms have 7x servo motors and will be fitted with pincers or human-like palms. The arms are stated to be dexterous sufficient to allow prosthetic limb purposes.

Reachy fashions
(click on picture to enlarge)

Reachy sells for about $9,000 with a single arm, $11,000 with the addition of the top, and $17,000 for a whole unit with two arms and a head. Solely 15 items are at present obtainable (or fairly presumably “have been” obtainable”), due later this quarter.

The robotic’s mind, which mixes a quad -A72 Raspberry Pi Four SBC with 2GB of RAM and a Google Coral AI accelerator, is situated not within the head, however within the chest. That is additionally the place you’ll additionally discover a speaker and microphone.

The above computing particulars are derived from a hands-on preview from Tom’s {Hardware}. The report describes watching the robotic decide up a sequence of blocks and play itself in a sport of Tic Tac Toe. Extra feats are proven within the YouTube video farther under.

Reachy purposes
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The product will likely be obtainable with open supply {hardware} and software program help, in addition to boards for builders. For now, nevertheless, the main points are somewhat sketchy. Pollen Robotics notes that the “TPU,” referring to Google’s Edge TPU (Tensor Processing Unit) AI chip, can run ML algorithms offline. It’s unclear if the Reachy makes use of the newly introduced, solderable Coral Accelerator Module LGA module model of the Edge TPU or the sooner Coral USB Accelerator.

Reachy manipulating blocks (left) and exploded view of arm
(click on photos to enlarge)

The element view above exhibits that the Raspberry Pi Four linked HDMI, USB 3.0, and Gigabit Ethernet ports are uncovered on the again of the unit. The 2 cameras are two Raspberry Pi cameras modified to have completely different fields of view. One is for analyzing the general scene whereas the opposite is concentrated on manipulation duties. That is seemingly probably the most superior of the numerous obtainable robots constructed across the Raspberry Pi, and the primary we’ve seen based mostly on the RPi 4.

The Orbita ball-joint know-how for the top is accompanied by separate actuators that individually management the 2 antennas to specific emotion. Presumably, additionally they amplify the RPi 4’s WiFi.

Reachy element view (left) and Tom’s {Hardware} picture of internals, with field highlighting Raspberry Pi Four with heatsink
(click on photos to enlarge)
Supply: Tom’s {Hardware} (picture on proper)

The robotic is powered by a 100-240V provide, and the arms can collectively raise weights of as much as 500 grams. Another model is accessible for purposes that “require longer-term utilization and specific power,” says the corporate.

Reachy runs Raspbian with ROS, backed up with an open supply Python library. The Coral AI software program operating on the Edge TPU helps TensorFlow Lite. Additionally obtainable are DialogFlow and the Snips AI voice management assistant.


Tom’s {Hardware} says the robotic’s modules come from Luos Robotics, however we noticed no indication that Luos is a {hardware} firm. The OS that runs on them is Luos, nevertheless. Luos is billed as a ROS for microcontrollers and might run on MCUs with as little as “24ko,” which can consult with kilobits. Utilizing RS485 know-how, Luos gadgets can ship messages at 10Mbps.

Impressed by “many various industrial-grade bus and distributed working methods,” Luos “types software code and drivers into modules,” after which can detect, localize, and checklist all of them, says Luos. As soon as a number of nodes are linked, the remainder can mechanically self-organize right into a single system picture. Obtainable with a C/C++ based mostly API, Luos can translate to Json and will be accessed by excessive stage languages together with Python, Ruby, JavaScript, and ROS.

Reachy YouTube debut video

Additional info

The Reachy robotic sells for 7,990 to 15490 Euros (a bit lower than $9,000 to $17,000), and is accessible for pre-order right here. In case you miss out on the primary 15 fashions, that are attributable to ship within the present quarter, you’ll be able to presumably be added to their ready checklist for a bigger manufacturing run. Extra info could also be discovered on the Pollen Robotics web site.

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