Electronics

About a year ago I built a digital picture-frame out of an old Fire HD 10 tablet, Fully-Kiosk and Immich-Kiosk (post here). That lasted until the battery started to swell. I don’t want a puffy lithium cell charging 24/7 on my wall, and the tablet won’t run from the charger alone, so that was the end of iteration one. Iteration two: a normal monitor on a Raspberry Pi Zero 2 W, still showing Immich-Kiosk in a browser. Worked fine for almost a year, then the SD card died. ...

As a birthday-present for my wife I wanted to gift her a digital picture frame showing favourites from our Immich gallery. I had some unused old Fire HD 10 tablets laying around, so I wanted to use those. Required Old Tablet (e.g. old Fire HD 10 tablet) Off-the-shelf picture frame (e.g. Hama Bilderrahmen Rise, 20x30cm) 3D printed passepartout 3D printed picture frame stand Fully-Kiosk Android App Immich Instance running Immich-Kiosk Instance running (in my case installed on NixOS) 3D Printing Passepartout 3D Printed Passepartout ...

A dumb wall controller was replaced with a custom ESPHome controller to gain full Home Assistant control, per‑room fan control, and automations for quieter nights and smarter operation. The system keeps the original alternating 70‑second pendulum cycle used by decentralized heat‑recovery fans.

I have long wanted to have tablets on the wall of the ground floor and upper floor where I can control Home Assistant. In the last Black Friday Sale I bought two relatively cheap 10 inch Fire Tablets from Amazon for 99€ each. The only difficulty was to supply the tablets with electricity. But then I came up with a very practical solution. Qi Charging Pad I bought a Qi Micro USB Ladepad at Amazon (Affiliate Link): ...

Initial build of the Anet A8 upgrade I started to upgrade my Anet A8 to proper aluminium extrusions. I am using the fantastic project called AM8. I started with my initial build: Finalizing the mechanical part This weekend I finished the mechanical part of the upgrade of my Anet A8 to the aluminium AM8. Next step is finishing the electrical installation and setting up the firmware. ...

The build begins & tapping aluminium extrusions I ordered the wrong size self-tapping screws (M5 instead of M6), so I had to tap the aluminium extrusions manually. I changed my BOM so nobody else has the problem. ...

Self made Power Supply, based on a DPS5015 module from AliExpress. The DPS5015 is a programmable step-down converter: it takes a DC input and provides an adjustable output with constant-voltage and constant-current modes, plus a colour display and a rotary encoder for setting the values. On paper it does up to 50 V / 5 A / 360 W — in practice the output ceiling is set by the input supply, since a buck converter can only step down. Fed from the industrial mains PSU in this build it covers the range I need for testing LED strips, controllers and small prototypes, and the adjustable current limit is the feature I wouldn’t want to miss anymore: it turns every accidental short circuit into a harmless current reading instead of magic smoke. ...

When I got my new espresso machine in 2015 I had quite some problems with the fluctuating temperature of the boiler. So I decided to replace the bimetal thermostat with a PID controller. I installed the controller in an external plastic box, so I didn’t have to cut any holes in the machine (just in case I want to sell the machine). Second modification was adding a cheap LED light source. ...

Mit meinem Grossvater zusammen hab ich die Visaton Atlas 200 Light nachgebaut. Vielen Dank an Volker & mr_head für die Erstellung des Bauplans und der Weiche. Bilder im Bau ...