Richard Hughes announces ColorHug, an open colorimeter

Richard Hughes announces ColorHug, an open colorimeter

After several weeks of work Richard Hughes has just announced presales of ColorHug — an open colorimeter. Both firmware uploader, firmware itself and schematics are available as free software.

ColorHug focuses on three disadvantages of existing colorimeters: price tags, speed of measurement and tweakability. In other words, it's cheaper (£60) and faster (mere 80 seconds) than anything else available on the market, while precision can be improved thanks to upgradable firmware.


Right now ColorHug is only supported by colord. For other platforms, such as Windows and Mac, the support will be available via ArgyllCMS at some point in the future. The focus is on Linux users who want an affordable solution that will just work out of box.

ColorHug schematics

Shipping is expected in December. The box will include a USB cable and a CD with an updated version of Fedora 16. The firmware uploader and newer versions of colord require libgusb. All the code, inlcuding firmware and schematics, is available on Gitorious under terms of GPL.

Note that right now there is a discount to £48 for early adopters.

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5 Responses. Comments closed for this entry.

  1. Seriously cool! Very, seriously cool!

    I’d very much like to have one for my home computer. I’m already using Spyder3 Express through DispcalGUI and Argyll but I wont hesitate supporting an open initiative like ColorHug

    @Richard: I doubt I’ll miss it but why can’t ColorHug sample a CRT display? Update frequency related? Will it work on plasma screens or similar?

  2. One more thing: On your website, you’re saying: “The Colorhug contains a color sensor with 9 pixels, 3 red, 3 blue and 3 green.”

    I’m assuming the sensor is behind the frosted plastic and light emitted from the tiny RGB LEDs on a screen will be properly scattered. Is it so?
    (preorder e-mail sent) :)

  3. Where would I find schematics for this device? (Preferably in some graphic format, rather than some proprietary schematic cap format)

  4. @Lionel

    I didn’t know gschem was a proprietary application :) It’s at gitorious, in the hardware repo.

  5. @Alexandre
    They kind of came out wrong, didn’t it?
    What I was getting at was that I’d like to see it in a bunch of PNGs, or a PDF or something of the sort, basically so I can check out the circuit without having to install a bunch of stuff first. No problem if that’s a hassle.