4.41 inch ePaper Display for the rPi

rickman · 2015-06-18T15:42:27+00:00

There are a number of displays on the market for the Pi. I need one that will work over a wide temperature range. I would like to use an ePaper display, but there is very limited selection currently. Between the size needed and the temperature range I find no existing ePaper product that will work. I have found a couple of Kickstarter projects that seem to use the Aurora type of ePaper display which meets the temperature requirement, but they are only for the smaller displays, the largest being 2.7 inches I believe. These controllers are not compatible with the larger size displays. I have also found 4.3 inch displays in a different ePaper technology which won't meet the temperature requirements. I am thinking about making a Pi oriented controller board for the 4.41 inch size display. The resolution is 400x300. There is a controller chip that is promoted for the larger displays, but I haven't found documents explaining what it does. I actually can't find any documents on exactly how to drive the larger displays other than using the eval controller module which uses the controller chip. So clearly it will be a long row to hoe to try to get the info and design a board. In essence, the difference between this display and others out there is the temperature range and the fact that the display size is not limited by the rPi size. I'm wondering how much interest there might be in such a product if I make it. -- Rick

Jun 18, 2015 61 Replies

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Dom 10 years ago

I run my own app on my Android phone. I compile the .apk file on my Linux PC using ant and then upload to the USB connected phone using adb.

The phone needs to have the developer options enabled, but that is a simple option and doesn't "root" Android in any way.

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cl 10 years ago

Yes, you're both quite right of course. It's easy enough to install an app you have written yourself on an unrooted Android device. I was rather thinking of doing the development on Android in the same way I develop on Linux.

Chris Green

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