Recycle lithium battery from e-cigarette

Just a small reminder that waste can also contain valuable resources. For example electronic cigarettes (ELFBAR, etc…) for one time use contain a huge battery which is rechargeable. I found plenty around my home in the city forest. Few of them were heavily degraded, but most of them still worked fine.Teardown of an original unit…

ESP32 Squeezelite on ESP32 Audio Kit

TLDR;ESP32 Audio Kit V2.2 A149 OR 3478 (Chip ID 2974) or can be used with ESP32 Squeezelite with the settings mentioned below. Squeezelite firmware for ESP32 ESP32 Squeezelite is a firmware working with Logitech Media Server (LMS / picoreplayer). It is versatile in application and working on several ESP32 based boards. ESP32 Audio Kit board…

Re-enable alsaequal in PiCorePlayer 5

After the upgrade of PiCorePlayer 4 to version 5 I noticed that there has been a change in the caps module. Unfortunately I was unable to configure the alsaequal equalizer using the webinterface.PiZero devices with JustBoom Zero Amp hat are still working fine with equalizer and v5. But my Raspberry Pi 2/3/3b with a HifiBerry…

Modify HC-SR501 PIR sensor to work with 3.3V

Using a PIR sensor, motion of persons or pets can be detected. The inexpensive HC-SR501 (and clones) is worth the price, but without modification a 5V signal is required. To make it work with ESP8266 / ESP32 3.3V would be much better. With a slight modification 3.3V can be used as input voltage and the…

Unix permissions on WSL NTFS mount

WSL suffers from missing unix permissions for Windows mounts.Storing ssh keys on NTFS and having it mounted on any WSL environment will not meet file permissions requirements. The files on the NTFS mount will have 777 which is far too open.SSH agent will complain about file permissions set too open. NTFS does not support unix…

A brave new world

After several weeks of usage, I can’t say much bad about the Chromium-based brave browser.Built-in ad-blocker, private browsing using Tor, Chrome-like feeling, cross OS availability.MacOS, Windows, Android, IOS!One feature I like very much is the blockchain-style sync function. Google Chrome sync feeling without Google – features I have been looking for years now. You simply…