https://pilakkat.mywire.org/blog/Santhosh's Tech NotesTechnology blog by Santhosh Kumar Pilakkat — Senior Systems Architect with 30+ years across 5G, Software-Defined Radio, IIoT, FPGA design, and embedded systems. 2026-04-17T11:37:58+08:00 Santhosh Kumar Pilakkat https://pilakkat.mywire.org/blog/ Jekyll © 2026 Santhosh Kumar Pilakkat /blog/assets/img/favicons/favicon.ico /blog/assets/img/favicons/favicon-96x96.png Hello World — Why I Started This Blog2026-04-08T10:00:00+08:00 2026-04-08T10:00:00+08:00 https://pilakkat.mywire.org/blog/posts/welcome-to-my-tech-blog/ Santhosh Kumar Pilakkat An introduction to this blog — who I am, what I plan to write about, and why I think it is worth documenting 30 years of systems architecture work. Writing Linux Kernel Modules from Scratch2026-03-05T09:00:00+08:00 2026-04-09T04:00:00+08:00 https://pilakkat.mywire.org/blog/posts/linux-kernel-modules/ Santhosh Kumar Pilakkat A practical guide to writing Linux Kernel Modules (LKMs) — covering the build system, module lifecycle, character device drivers, and interrupt handling, with a worked example of a GPIO character driver on a Raspberry Pi. Rust on ESP32: From Blinky to Async Wi-Fi2026-02-15T09:00:00+08:00 2026-04-09T04:00:00+08:00 https://pilakkat.mywire.org/blog/posts/rust-on-esp32/ Santhosh Kumar Pilakkat A step-by-step guide to writing Rust firmware for the ESP32 using the Embassy async runtime — covering toolchain setup, GPIO, serial output, and a working async Wi-Fi client that connects to a network and fetches a URL.