2026

Bash Scripts, Computers, GNU/Linux, Open Source, Video / Youtube

How to Generate Audio Spectrum Videos from MP3 songs with FFmpeg

Sometimes I need a simple way to convert an MP3 file into a video suitable for YouTube. Instead of using a static image. I created a small Bash script that generates an animated frequency spectrum using FFmpeg. The script uses FFmpeg’s showfreqs filter to generate an animated frequency spectrum from the audio. How to use […]

General

Test Solar PV Monitoring Dashboards Using an Open-Source Renogy BT-1 Simulator

Renogy BT-1 telemetry provides useful information for monitoring the condition and performance of a solar photovoltaic system. It can report key values such as PV voltage, current, power generation, battery status, controller temperature, charging activity, and load consumption. These data are important for building dashboards, alerts, databases, and automation systems. However, developing and testing such […]

Web Application

PolicyMaker: A Lightweight PHP Tool to Create Privacy Policy Pages for Android Apps

PolicyMaker is a lightweight web application for creating, managing, publishing, and displaying privacy policies for Android mobile applications. It is built using PHP and SQLite, so it does not need a heavy database server or complex deployment setup. The project is available on GitHub – https://github.com/mypapit/policymaker PolicyMaker Dashboard PolicyMaker Wizard The main idea behind PolicyMaker […]

PHP, Web Application

Neuropentracker: A Simple BitTorrent Tracker for Small Setups

I have published Neuropentracker, a simple BitTorrent tracker on GitHub:https://github.com/mypapit/neuropentracker Dashboard Screenshot What it is Neuropentracker is written in PHP and is designed for small setups. It is suitable for small organizations, small communities, labs, schools, or internal file-sharing environments. The main idea behind Neuropentracker is simplicity. It does not try to be a complete […]

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