October 18, 2026
Robotics Morning Digest
A thin, community-heavy Sunday: Agility Robotics targets 20-hour humanoid workdays with 9-minute charging, a team reports switching a customer deployment to frontier LLM control, ADI and The Robot Report cover physical AI and motor selection, and r/robotics brings a one-motor drone, a gravel-crossing quadruped and practical arm and drive design debates.
Product & Industry
ADI explains the race to make AI physical
The Robot Report- A new ADI whitepaper examines the challenges and opportunities in moving physical AI out of labs and into production machinery.
- The piece frames the shift from lab demos to production equipment as the central hurdle for physical AI.
Humanoid robot Digit 5 targets 20-hour workdays with 9-minute charging
r/robotics- Agility Robotics says its upcoming Digit 5 humanoid will use Nyobolt batteries to deliver 90 minutes of operation after a nine-minute charge.
- The targeted 10:1 run-to-charge ratio could support more than 20 productive hours per day in warehouses and manufacturing facilities.
Tools & Practical
How to choose a BLDC motor for robotic arms and mobile robots
The Robot Report- Selecting a brushless DC motor depends on several factors, from sensors to safety.
- The right choice also differs depending on whether the application is a robotic arm or a mobile platform.
Same payload, same reach, very different behavior in production — wrist geometry is why
r/robotics- The poster notes that "configuration" is used for two different things in robot selection discussions, and the mixup causes real problems downstream.
- Under ISO 9787, configuration technically means the set of joint values that determines the robot's shape at any time.
- The thread argues wrist geometry explains why robots with the same payload and reach behave very differently in production.
PCB mount servo drives vs traditional panel mount for compact robotic joints
r/robotics- Panel-mounted drives make servicing and thermal heatsinking easy, but routing high-current motor phases and encoder lines through six articulated joints is painful.
- The poster is considering ditching the central cabinet for drives mounted at the joints and asks how others handle packaging on tight builds.
[Open-source] One-Class SGD (SONAR)
r/robotics- One-Class SGD learns where normal sensor readings sit and draws a boundary around them.
- Each new reading gets a score: negative means inside the boundary (normal), positive means outside, and larger values mean further outside.
- It learns one reading at a time, so it can update incrementally.
We completely switched to frontier LLMs to control a robot
r/robotics- A team reports that over the past month it fully switched to frontier LLMs to control a robot in a customer deployment.
- They describe a System 1/System 2 architecture "on steroids," with a high-level reasoning layer built on an agent using Opus and Astra.
Community Highlights
I Built a Drone With Only One Motor – And a Poor Man's High Speed Camera
r/robotics- An under-actuated drone flies with a single motor, developed over the last few months.
- Its propeller hub is 3D printed in PPA-CF and has a hinge, so when the motor accelerates the blades lag behind and one pitches up while the other pitches down.
- Control comes from pulsing the motor torque.
My robot dog kept finding new ways to move across gravel
r/robotics- A small quadruped called Quaddle rolled through and survived a patch of loose gravel.
- When a move fails it flips itself back up, driven by Auto Mode on its built-in IMU, which handles tilt, fall, lift/drop and shock detection the same way.
DIY robot arm that plays Nine Men's Morris
r/robotics- A small 3D-printed arm designed for educational use, aiming for precise, smooth movements.
- The first version has 4 DOF with room for expansion, and joints J1 to J3 use factory-made POM gears from a Tarot 450 main gear.