Category Archives: Internet of Things

Scott Kelby Breaks Down Auto Tone, Contrast and Color #celebratephotography


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Helpful read from Scott Kelby:

So, I’ve been asked this question twice, which therefore automatically merits a blog post about it. Trust me, that’s how that works. 😉

‘What is Auto Tone?’

Well! First of all, what does it do? Photoshop’s Auto Tone (along with Auto Contrast and Auto Color; all found under the Image menu) can instantly fix colour and contrast problems in your images. The click of a button sends the Photoshop algorithms into action, the whole image is assessed, and from that assessment, Photoshop applies what it has determined is “right” for the image. What’s happening, in reality, is that all that work you did with the Exposure, Contrast, Shadows, Highlights, Whites, and Blacks sliders, along with the White Balance you decided upon, are all being looked at and adjusted again right after you adjusted them. That image you worked hard on and made pinpoint adjustments on is being changed and what you thought was best, Photoshop perhaps didn’t! It’s essentially a fight between what is popular and what is right…

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We #celebratephotography here at Adafruit every Saturday. From photographers of all levels to projects you have made or those that inspire you to make, we’re on it! Got a tip? Well, send it in!

If you’re interested in making your own project and need some gear, we’ve got you covered. Be sure to check out our Raspberry Pi accessories and our DIY cameras.


via Adafruit

NEW PRODUCT – 64×64 RGB LED Matrix – 2.5mm Pitch – 1/32 Scan


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NEW PRODUCT – 64×64 RGB LED Matrix – 2.5mm Pitch – 1/32 Scan


Winter time can be rough in the city. The sky is gray. The weather is unpredictable. So slough off those seasonal blues with some Times Square razzle dazzle from this sweet, ultra-high-density 64×64 RGB LED Matrix. These panels are typically used to make video walls. Here in New York we see them on the sides of buses and on top of taxi cabs displaying animations or video advertisements. We thought they looked really cool, so we picked up a few boxes of them from a factory. They have 4,096 bright RGB LEDs arranged in a 64×64 grid at a 2.5mm pitch.

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WARNING! These 64-pixel tall matrices use a non-standard 5-address multiplexing system! WARNING!

Many add-ons or drivers use only a 4-address (ABCD) setup. Right now the only board we have that can use these big matrices is our RGB Matrix Bonnet for Raspberry Pi, and you’ll need to connect a solder jumper. Other libraries such as our Arduino library, or our HDMI driver boards don’t support 5-address multiplexing!

Full Kit Contents:

  • 64×64 RGB panel
  • IDC ribbon cable (~200mm)
  • power cable (~480mm)
  • 4 mounting screws and mini-magnets

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3649 quarter ORIG 2018 02

In stock and shipping now!


via Adafruit

Subscribe to the Adafruit Youtube channel! #Youtube


Are you subscribed to the Adafruit Youtube channel? If you’re not already subscribed, click here! http://adafru.it/subscribe . It’s a free and easy way to keep up with our newest episodes. Here’s some of what we’re up to.

Electronics show and tell with G+ On-Air hangouts every Wednesday at 7:30pm ET. Want to show a project on an upcoming show and tell? Leave a comment on the show and tell announcement on Adafruit’s G+ page: http://ift.tt/15IF4UZ

Every Wednesday night at 8pm ET join us for our weekly live video & chatroom! Visit http://adafruit.com/ask for more info. You can ask anything about electronics, kits at Adafruit or just stop in to meet other makers who are building cool things! At the end of the chat we give away a kit from Adafruit to the winner of our trivia question!

Hang out with Noe & Pedro Ruiz every week and discover 3D printing! Get your 3D news, projects, design tutorials, shop talk and more each week..

New Products – Updated Fridays

Each week Ladyada shows the newest great electronics at Adafruit!

Join Ladyada streaming live for circuit board layout design, code writing, surface mount soldering and more fresh engineering and even some gaming! If Ladyada’s working on it, you’ll find it here first.

where Collin Cunningham covers a seemingly random variety of topics from the world of electronics, science, music, etc, etc …

  • John Park’s Workshop
  • Project builds, hacks, and mods from John Park’s Workshop!


    via Adafruit

    Pi Zero Gives Telescope Hands Free Focus #piday #raspberrypi @Raspberry_Pi


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    Via Hackaday:

    It seems like [Jason Bowling] never gets tired of finding new ways to combine the Raspberry Pi with his love of the cosmos. This time he’s come up with a very straightforward way of focusing his Celestron 127SLT with everyone’s favorite Linux SBC. He found the focus mechanism on the scope to be a bit fiddly, and operating it by hand was becoming a chore. With the Pi Zero and a stepper motor, he’s now able to focus the telescope with more accuracy and repeatability than clumsy human fingers will be able to replicate.

    To control the stepper, [Jason] is using an EasyDriver connected up to the Pi’s GPIO, which along with a 5V regulator (which appears to be a UBEC from the RC world) is held in a tidy weather proof box mounted to the telescope’s tripod. The regulator is necessary because the whole setup is powered by a 12V portable “jump start” battery pack for portability. Handy when you’re stargazing in the middle of a field somewhere.

    Pifocus detail

    Learn more! and check out Jason’s blog here!


    3055 06Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!


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    Black Panther Hits Theaters Today! – African American History Month 2018 #BlackHistoryMonth


    Adafruit BHM2018 blog

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    The highly anticipated Marvel film Black Panther comes out today and I’m sure it is no coincidence that its release date sits right in the middle of African American History Month. With early pre-sales outpacing previous super hero movies, it is clear the people are eager for a black super hero to hit the big screen!

    In New York a man even started a campaign to raise money to give children in Harlem the chance to see the movie. Via Huffington Post:

    Yonkers, New York, native and marketing consultant Fredrick Joseph set out to give hundreds of Harlem kids the chance to see themselves reflected in the film.

    “To me nothing is more important than inclusion and representation for children,” he said. “This is such a bigger moment in time than a superhero movie.”

    The Rolling Stone article, Black Superheroes Matter: Why a ‘Black Panther’ Movie is Revolutionary’, sums up the importance of the release:

    As a child in school, I rarely reached for the black or brown Crayola crayons in my superhero coloring books; I have a lifetime’s worth of Halloweens where I weighed how often I could or should dress as the white superheroes. I couldn’t find ones that looked like me both outside of and underneath the mask. An entire generation of children will now know that a black superhero, society, imagination and power can exist right alongside Peter Parker, Steve Rogers and Bruce Wayne. An entire generation of children will not know what it feels like to not see themselves reflected back on costume racks, coloring books or movie screens. We’re at a pivotal time where these characters and stories are coming not out of permission or obligation, but necessity.

    It has been someone’s time before again and again and again. But next spring will belong to Wakanda much like the summer belonged to Wonder Woman. We’ve been waiting to see ourselves onscreen, flying through the air and running across buildings and dodging laserblasts from bearded colonialists our entire lives. The future is Ryan Coogler, Chadwick Boseman, T’Challa, Black Panther. The future is here on February 16th.

    Read more!


    via Adafruit

    New Products 2/14/2018 Featuring Adafruit RGB Matrix Bonnet for Raspberry Pi! (Video)


    New Products 2/14/2018 Featuring Adafruit RGB Matrix Bonnet for Raspberry Pi! (Video)



    via Adafruit

    Automatic Vision Object Tracking #piday #raspberrypi @Raspberry_Pi


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    From MJRoBot on Hackster.io:

    On my last tutorial, we explored how to control a Pan/Tilt Servo device in order to position a PiCam. Now we will use our device to help the camera to automatically tracking color objects…

    This is my first experience with OpenCV and I must confess, I am in love with this fantastic “Open Source Computer Vision Library”.

    OpenCV is free for both academic and commercial use. It has C++, C, Python and Java interfaces and supports Windows, Linux, Mac OS, iOS and, Android. On my series of OpenCV tutorials, we will be focusing on Raspberry Pi (so, Raspbian as OS) and Python. OpenCV was designed for computational efficiency and with a strong focus on real-time applications. So, it’s perfect for Physical computing projects!

    Read more


    3055 06Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!


    via Adafruit