Digital image frames aren’t precisely new expertise. Put a bunch of photos on an SD card, slot it in they usually simply cycle via all of them to offer you a always 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 associates ship him photos throughout the Web and it robotically updates with the photographs which have been despatched.
Cameron’s image body isn’t color. As an alternative, it makes use of a mono e-ink show. These are nice as a result of they preserve the picture even when no energy is being utilized to them, which suggests once they’re not actively altering the image, they use no vitality 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 via a few iterations of his gadget, beginning off with only a common image body and an ESP32 growth board to determine the code and normal course of and at last shifting over to a customized PCB with a milled body in an effort to get issues trying and dealing precisely the best way he wished. The fundamental element record is fairly easy.
That’s just about it. A number of wires and slightly 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 information if you wish to get your individual 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 information from the online or writing photos to an e-ink show with the ESP32, so it shouldn’t be that tough to determine should you’re so inclined.
Yow will discover out extra about Cameron’s Postcard Body mission and obtain the schematic and PCB information on Hackaday.