Posts on yenupam

Upcycle #1: Reviving a locked-down Android projector back to life

Thu, 21 May 2026 13:52:23 +0530

Android projector sideloading: When an Android TV device lacks USB/ADB access and has a locked-down launcher, you can still install APKs by serving them from a local Python HTTP server on your laptop, then downloading them through the device’s built-in browser. This method works on any Android TV device with a browser and no developer access.

Introduction

Android Projector

My family bought this Android projector back in 2020 during lockdown so we could watch things on a really big screen. It was working okay-ish, but fast forward 6 years and Netflix dropped support for Android 7 (the Android version on this projector), and so did a lot of OTT apps. While YouTube does work, the UI lags when moving around. Now it’s just sitting in a corner, collecting dust.

Adding systemd-resolved Support to Connman

Tue, 03 Sep 2024 00:00:00 +0530

Connman systemd-resolved: Connman is a lightweight network manager for Linux that lacks built-in systemd-resolved support. To enable it, you must rebuild the connman package from source with the --with-dns-backend=systemd-resolved configure flag. This allows connman to delegate DNS resolution to systemd-resolved, enabling features like DNS-over-TLS and per-link DNS configuration on Arch Linux.

This is a quick guide to enable systemd-resolved support for connman package in arch because arch wiki being arch wiki, it RTFMed the reader with no futher explanation on how to actually rebuild this package.

C++ Notes

Sat, 01 Jun 2024 00:00:00 +0000

C++ fundamentals: C++ is a statically-typed, compiled programming language that supports procedural, object-oriented, and generic programming paradigms. Key concepts include statements (instructions that cause program actions), objects (memory regions storing values), and functions (reusable units of statements). Every C++ program requires a main() function as its entry point.

Build Configurations

For debugging: -ggdb flag (gcc)
For release builds: -O2 -DNDEBUG

The debugging flag produces a larger executable compared to release builds.

Gemini / Gemtext Notes

Sat, 01 Jun 2024 00:00:00 +0000

Gemtext: Gemtext is the lightweight markup format used in the Gemini protocol, an alternative to HTTP for simple document publishing. It uses a minimal syntax where lines starting with => are links, # are headings, * are list items, > are quotes, and triple backticks toggle preformatted text. Each line is a standalone entity with no inline formatting, making it simpler than Markdown but more structured than plain text.

Text Lines

Each individual line in a Gemtext document is a stand-alone entity. Hence, a separate line break syntax is not needed.
Text lines which don’t fit in client’s display get wrapped automatically.

Link Lines

Lines starting from => are considered link lines.