This wall clock displays your heartbeat in real time #WearableWednesday

Dezeen spoke with designer Ivor Williams about his Uji clock which displays your heartbeat in real time.

Designer Ivor Williams has created a clock that displays your heartbeat instead of the time (+ interview + movie).

The clock, called Uji, uses a wearable ECG sensor to record the electric activity of the heart. This information is sent wirelessly to the clock, which moves its hands backwards and forwards in time with the pulse.


Williams says the project aims to raise questions about the way wearable devices are increasingly be used to harvest “quantified self” data from individuals.

“Uji uses the same technology as wearable devices to detect the heartbeat but it doesn’t use it in a very quantifiable way,” Williams told Dezeen. “It uses it in a very abstract way.”

Williams created the clock with Fabrica researchers interaction designer Jonathan Chomko and product designer Federico Floriani.

The clock is made from a single piece of handmade ceramic features two thin, black hands positioned at midnight. Instead of telling the time, the hands flicker backwards and forwards.

The “quantified self” movement, which began in California in 2007, focuses on finding ways to use technology to collect biometric data, such as measuring blood oxygen levels or tracking insulin or cortisol levels, with the aim of medical self-advancement.

“It’s like the holy grail of technology, this wearable technology with this quantified self. It’s like data driven enlightenment, the idea that you can know yourself,” said Williams. “If we can measure all our vital signs, what’s the value in that?”

He added: “One of the nice things about the clock is that is doesn’t quantify, it doesn’t hold,” Williams explained. “It doesn’t give you any information about whether you have a healthy or an unhealthy heartbeat. It’s not the answer but it’s one way of looking at how technology can be used to do something else.”

Read the full interview here.


Flora breadboard is Every Wednesday is Wearable Wednesday here at Adafruit! We’re bringing you the blinkiest, most fashionable, innovative, and useful wearables from around the web and in our own original projects featuring our wearable Arduino-compatible platform, FLORA. Be sure to post up your wearables projects in the forums or send us a link and you might be featured here on Wearable Wednesday!

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here:

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in!

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community!

CircuitPython – The easiest way to program microcontrollers –

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.