Digital image frames aren’t precisely new know-how. Put a bunch of photos on an SD card, slot it in and so they simply cycle by way of all of them to provide you a continually altering show. They’ve been round for years and there are hundreds of thousands of them on the market. However this one, created by Cameron on Hackaday is fairly cool. It lets buddies ship him photos throughout the Web and it routinely updates with the pictures which were despatched.
Cameron’s image body isn’t color. As a substitute, it makes use of a mono e-ink show. These are nice as a result of they maintain the picture even when no energy is being utilized to them, which suggests once they’re not actively altering the image, they use no power in any respect. The mind powering it’s an ESP32, which is battery powered and Cameron says it ought to give a number of hundred updates on a single cost.
Cameron’s been by way of a few iterations of his system, beginning off with only a common image body and an ESP32 growth board to determine the code and common course of and eventually shifting over to a customized PCB with a milled body to be able to get issues wanting and dealing precisely the way in which he needed. The fundamental part listing is fairly easy.
That’s just about it. Just a few wires and a little bit time coding and also you’re good to go. The primary model of the show used a Raspberry Pi Zero, however decided the Pi was overkill for this sort of a mission. He then developed his code on an off-the-shelf ESP32 dev board earlier than switching to a customized PCB. Cameron has launched each the board schematic and the KiCAD files if you wish to get your personal made.
He hasn’t launched the code for the board, because it’s tied into his personal net server. He says he’s not assured sufficient in his web site’s safety to make all of it public for everyone to make use of, however there are many tutorials on the market on YouTube for issues like grabbing recordsdata from the net or writing photos to an e-ink show with the ESP32, so it shouldn’t be that troublesome to determine should you’re so inclined.
Yow will discover out extra about Cameron’s Postcard Body mission and download the schematic and PCB files on Hackaday.