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clash

165 karma · joined November 28, 2017

http://framelabs.eu/
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clash··on Show HN: A 13.3" battery-powered e-paper picture frame to display digital art
Thanks! Unfortunately, the purchasing cost of the large e-paper displays is by far the biggest cost factor.
clash··on Show HN: A 13.3" battery-powered e-paper picture frame to display digital art
Nope, no plastics at all whatsoever. It is high quality aluminum. Solid wood is also possible on request.
clash··on Show HN: Low-power Kindle-based dashboard
There is a micro-USB connector on the back which you could just permanently hook up to a power supply. When the battery life is not part of the equation anymore, making push available is not a problem.
clash··on Show HN: Low-power Kindle-based dashboard
You can configure it to poll for messages on a fixed interval. Pushing is not possible since it would sacrifice the battery life.
clash··on Show HN: Low-power Kindle-based dashboard
Very cool. If someone is looking for a device with even better battery life: I created something similar -- albeit with a different approach to its visual appearance.

See: https://framelabs.eu/en/

clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
The images need to be processed before they can be shown:

• Cropping

• Scaling

• Contrast + brightness adjustment

• Compression

That is what the online converter provides.

But I get your point. I will add example code on how to convert an image on your local machine.

clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
Thanks for your input. I was thinking about a way to have it powered by ambient energy. It is hard to integrate the solar cell in a way that it does not distract from the actual picture, though.
clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
They == the ArtFrame's built-in software ;) What I posted was generated by the device. It is an example of the actual picture quality.
clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
At 150 dpi the image depth is not a problem. Here is the 4-bit image of the 1929 Bentley as displayed on the frame for reference: https://www.instagram.com/p/CItoGRLh52n/

On the device you only notice if you get extremely close.

clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
The device ships with sample code included. So if you want to try your own use case, this is possible. I will also add it to https://github.com/framelabs-eu shortly.
clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
It is a 9.7" screen with 1200x825 pixels, which make it 150 ppi. It has WiFi built-in to load pictures from remote sources and also features a small local storage for up to 100 pictures. The battery should last for around 7000 changes of the picture. The frequency of picture changes can be adjusted and also defines how many years it will take for the battery to run out.

Pictures are dithered and contrast/brightness can be adjusted during upload, which can be done via the device's WiFi hotspot. Or you can configure it to connect to your local WiFi for easier access.

clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
Until the page is accessible again, here are some pictures and a picture transition: https://www.instagram.com/framelabs.eu/
clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
Nice work. Getting rid of the cable was actually the most important feature for me. It is almost impossible to spot that this is actually an electronic device if one doesn't notice the small button at the bottom.
clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
I am working on providing feeds with "Picture of the day" for the device. I agree that that service should run hardened software to prevent your scenario from happening.

If you run the device in local mode though, WiFi is never enabled.

clash··on I built a picture frame with a greyscale e-paper that runs on battery for years
Owner here. I initially created it for myself, but there was a lot of interest, so I made a kit available so that everybody can build one, too.
clash··on Why We Sleep, and Why We Often Can’t
Your list is missing one crucial item:

- listen to a (i.e. scientific, technical) podcast

Just go to bed and start a podcast. Turn the volume down, use a sleep timer so that the podcast will not run for 2 hours and close your eyes. Listening to people talking will clear your brain of trying to wander around.

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