When it comes to intuitive operation, there’s little to complain about with cassette players from the 1970s to 1990s: one button to start playback, one to stop and two more to fast forward and rewind. Even the playback position remains when you switch it off – without any software. As the earlier pioneers of portable music, these devices and their cassettes have long since become obsolete and have disappeared from stores, but their look and feel are still fascinating. This also applies to our author Maximilian Kern, who designed an ESP-controlled MP3 player with his retro audio player.
With its vintage housing from the 3D printer, it exudes a considerable amount of nostalgic charm. The device is operated in proper style with buttons and plays music via a loudspeaker or headphones. And meanwhile, the integrated display shows an animated magnetic tape reminiscent of the earlier windows of cassette recorders. In issue 5/22 of Make, we will show what thoughts and functions are still in the compact device and what is required for a replica.
View film negatives with the ESP32-CAM
Anyone who was already taking fairly ambitious photographs in the pre-digital era certainly still has a carefully stored archive full of negatives at home – after all, in the case of analog photos, these are the actual originals and the positive prints that you stick to the album are just copies of them. Unfortunately, you can usually only see something vaguely on the negatives, because very few people are able to invert images in their heads. So how about a device that displays the negatives as positives?
View photo negatives quickly and easily as positives: the ESP32-Gucki makes it possible.
From this idea, Peter König developed the ESP32-Gucki, a small device that, thanks to ESP32-CAM, can not only display the images in a positive way, but also show them enlarged on the display of any WiFi-enabled device, be it a tablet, smartphone or computer . The invention inherited its name from the original Gucki, which used to be used to quickly view slides without a projector. In Make 5/22 we explain step by step how this handy little tool can be recreated using a breadboard, some cardboard and the already mentioned microcontroller.
There is more on the subject in issue 5/22 of Make.
Also in the issue: The weather and wind mill
Whether you built your own weather station, as described in the previous make, or get the weather data from a freely accessible service, it would be nice if the data wasn’t just displayed on a screen. On the go, this may be practical on the smartphone. For your own four walls, however, Heinz Behling has come up with a more original solution: the weather windmill.
It is inspired by the hygrometers, which look like small houses and react to humidity and temperature. However, our editor has added a few extras to the H0 model. The blade speed of the mill shows the wind strength, its hood and blades are always aligned with the wind direction and a tiny display in the entrance door shows the temperature and other weather data. Almost as if someone had made a TV in H0 size. The complete instructions as well as tips and tricks for the replica can be found in Make issue 5/22.
The current make: available at newsstands and online
Issue 5/22 is available online and at newsstands. With one of our subscriptions, the magazine was already in the mailbox. You can also conveniently order Make as a print version or PDF from the Heise Shop. If you prefer to read Make digitally, you can in our apps for iOS and Android. You can also find the table of contents of Make 5/22 online.
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