• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to secondary sidebar
  • About
    • Contact
    • Privacy
    • Terms of use
  • Advertise
    • Advertising
    • Case studies
    • Design
    • Email marketing
    • Features list
    • Lead generation
    • Magazine
    • Press releases
    • Publishing
    • Sponsor an article
    • Webcasting
    • Webinars
    • White papers
    • Writing
  • Subscribe to Newsletter

Robotics & Automation News

Where Innovation Meets Imagination

  • Home
  • News
  • Features
  • Editorial Sections A-Z
    • Agriculture
    • Aircraft
    • Artificial Intelligence
    • Automation
    • Autonomous vehicles
    • Business
    • Computing
    • Construction
    • Culture
    • Design
    • Drones
    • Economy
    • Energy
    • Engineering
    • Environment
    • Health
    • Humanoids
    • Industrial robots
    • Industry
    • Infrastructure
    • Investments
    • Logistics
    • Manufacturing
    • Marine
    • Material handling
    • Materials
    • Mining
    • Promoted
    • Research
    • Robotics
    • Science
    • Sensors
    • Service robots
    • Software
    • Space
    • Technology
    • Transportation
    • Warehouse robots
    • Wearables
  • Press releases
  • Events

Washington university scientists build tiny, self-driving robot powered only by light and radio waves

October 12, 2023 by David Edwards

Small mobile robots carrying sensors could perform tasks like catching gas leaks or tracking warehouse inventory. But moving robots demands a lot of energy, and batteries, the typical power source, limit lifetime and raise environmental concerns.

Researchers have explored various alternatives: affixing sensors to insects, keeping charging mats nearby, or powering the robots with lasers. Each has drawbacks. Insects roam. Chargers limit range. Lasers can burn people’s eyes.

Researchers at the University of Washington have now created MilliMobile, a tiny, self-driving robot powered only by surrounding light or radio waves.

Equipped with a solar panel-like energy harvester and four wheels, MilliMobile is about the size of a penny, weighs as much as a raisin and can move about the length of a bus (30 feet, or 10 meters) in an hour even on a cloudy day.

The robot can drive on surfaces such as concrete or packed soil and carry three times its own weight in equipment like a camera or sensors. It uses a light sensor to move automatically toward light sources so it can run indefinitely on harvested power.

The team presented its research at the recent ACM MobiCom 2023 conference in Madrid, Spain.

Co-lead author Kyle Johnson, a UW doctoral student in the Paul G. Allen School of Computer Science & Engineering, says: “We took inspiration from ‘intermittent computing,’ which breaks complex programs into small steps, so a device with very limited power can work incrementally, as energy is available.

“With MilliMobile, we applied this concept to motion. We reduced the robot’s size and weight so it takes only a small amount of energy to move. And, similar to an animal taking steps, our robot moves in discrete increments, using small pulses of energy to turn its wheels.”

The team tested MilliMobile both indoors and outdoors, in environments such as parks, an indoor hydroponic farm and an office. Even in very low light situations – for instance, powered only by the lights under a kitchen counter – the robots are still able to inch along, though much slower.

Running continuously, even at that pace, opens new abilities for a swarm of robots deployed in areas where other sensors have trouble generating nuanced data.

These robots are also able to steer themselves, navigating with onboard sensors and tiny computing chips. To demonstrate this, the team programmed the robots to use their onboard light sensors to move towards a light source.

Co-lead author Zachary Englhardt, a UW doctoral student in the Allen School, says: “‘Internet of Things’ sensors are usually fixed in specific locations.

“Our work crosses domains to create robotic sensors that can sample data at multiple points throughout a space to create a more detailed view of its environment, whether that’s a smart farm where the robots are tracking humidity and soil moisture, or a factory where they’re seeking out electromagnetic noise to find equipment malfunctions.”

Researchers have outfitted MilliMobile with light, temperature and humidity sensors as well as with Bluetooth, letting it transmit data over 650 feet (200 meters). In the future, they plan to add other sensors and improve data-sharing among swarms of these robots.

Vicente Arroyos, a UW doctoral student in the Allen School, was a co-lead author. Dennis Yin, who completed this work as UW undergraduate in electrical and computer engineering, and Shwetak Patel, a UW professor in the Allen School and in electrical and computer engineering, are co-authors, and Vikram Iyer, a UW assistant professor in the Allen School, is the senior author.

This research was funded by an Amazon Research Award, a Google Research Scholar award, the National Science Foundation Graduate Research Fellowship Program, the National GEM Consortium, the Washington NASA Space Grant Consortium, the Pastry-Powered T(o)uring Machine Endowed Fellowship and the SPEEA ACE fellowship program.

Print Friendly, PDF & Email

Share this:

  • Click to print (Opens in new window) Print
  • Click to share on Facebook (Opens in new window) Facebook
  • Click to share on LinkedIn (Opens in new window) LinkedIn
  • Click to share on Reddit (Opens in new window) Reddit
  • Click to share on X (Opens in new window) X
  • Click to share on Tumblr (Opens in new window) Tumblr
  • Click to share on Pinterest (Opens in new window) Pinterest
  • Click to share on WhatsApp (Opens in new window) WhatsApp
  • Click to share on Telegram (Opens in new window) Telegram
  • Click to share on Pocket (Opens in new window) Pocket

Related stories you might also like…

Filed Under: Features, Science Tagged With: light, millimobile, radio, robot, university, washington, waves

Primary Sidebar

Search this website

Latest articles

  • Sunrise Robotics emerges from stealth with $8.5 million funding
  • Industrial vehicle automation specialist ASI opens new office in Utah
  • Premier Automation launches innovation hub with support from Pennsylvania
  • Opinion: AI’s ‘real value is in eliminating everyday inefficiencies’
  • MES & Industry 4.0 Summit kicks off in Porto with global manufacturing leaders
  • Agentic AI startup Landbase raises $30 million in Series A funding
  • Dürr and GROB showcase new concept factory for battery cell production
  • Drone delivery: Navigating the path from high-flying hype to last-mile reality
  • The autonomous future of the warehouse: How AMRs are redefining logistics
  • Terradepth and EIVA partner to automate subsea data collection and cloud delivery

Secondary Sidebar

Copyright © 2025 · News Pro on Genesis Framework · WordPress · Log in

We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies.
Do not sell my personal information.
Cookie SettingsAccept
Manage consent

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
CookieDurationDescription
cookielawinfo-checkbox-analytics11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional11 monthsThe cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy11 monthsThe cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.
Functional
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytics
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
Advertisement
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
Others
Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet.
SAVE & ACCEPT