An e-ink desk companion

A 3D-printed air quality monitor, desk clock, and customizable e-ink gadget.

Two Bitclock devices on a desk
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Air quality + CO₂ alerts

Maximize your comfort and productivity by measuring CO₂ levels, temperature, humidity, and VOC levels (volatile organic compounds).

Customizable e-ink display

Select between current time and today's weather forecast using the companion browser tool.

Hackable + open source

3D-print your own case or create a new clockface app. Bitclock is unlocked + open source with 2.4 GHz Wi-Fi and Bluetooth 5 (LE) built-in.

Prusa slicer screenshot of enclosure 3D print

Have a 3D printer?

The Bitclock enclosure is a 3D printed design and you can optionally assemble a Bitclock yourself. Order the Bitclock PCB, insert it into your print, and snap it together. No other parts needed!

Prusa slicer screenshot of enclosure 3D print

Technical specs

Display

2.71" E-Ink display (264 x 176 px, 117 dpi)
Supports fast update (update pixels w/o screen flash)

Sensors

Temperature + relative humdiity (SHT40)
CO₂ (SCD40)
VOC + NOx index (SGP41)

SoC

ESP32-S3 with 2.4 GHz Wi-Fi and Bluetooth 5 (LE)
8MB Flash memory

Power

USB-C (cable not included)

Configuration

Via Bluetooth using bitclock.io/connect
Google Chrome required

Debug

Flashing, logging, GDB over USB

Dimensions

2.9" height x 3.5" width x 2.0" depth

Configurator screenshot showing sensor readings

Product disclaimers

  • Google Chrome for macOS/Windows required for configuration and viewing sensor readings via Web Bluetooth
  • USB-C cable required for power (not included)
  • 2.4 GHz Wi-Fi connection required for clock sync + weather forecast functionality
  • Display does not have a backlight and requires ambient light to be visible
  • Sensors are not perfectly accurate and can be impacted by device enclosure
  • Device does not feature a PM2.5 particulate sensor
  • Currently USA shipping only

See the FAQ for more information.

Bitclock photo

About the project

Bitclock is an exploration of designing hardware with 3D-printed components.

The enclosure, PCB, and software are designed by Brady Law in San Francisco. Previously, Brady worked as a software engineer for Lyft and Apple.

Reach out if you have any questions! [email protected]

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