Articles

Read articles and tutorials on hardware projects, self hosting and more.

Tamiya Corsair 1/72 Build Log

A Painting Guide of the Tamiya 1/72 Scale Model of the Vaught F4U-1D Corsair

Henry Chen 3 Jan 2026

9 Minute Read

My Proxmox Server Build

A Proxmox server build with a AMD Ryzen 5 5500 CPU and NVIDIA RTX5060-TI GPU

Henry Chen 17 Dec 2025

9 Minute Read

My TrueNAS Build

A TrueNAS Build to Backup my important documents

Henry Chen 2 Dec 2025

9 Minute Read

Seoul - July 2025

Curated Snaps from Seoul

Henry Chen 9 Jul 2025

9 Minute Read

Jeju - June 2025

Curated Snaps from Jeju

Henry Chen 3 Jul 2025

9 Minute Read

Hong Kong - June 2025

Curated Snaps from our week in Hong Kong

Henry Chen 1 Jul 2025

9 Minute Read

Zadoff-Chu OFDM Preamble

The Zadoff-Chu (ZC) sequence is a widely used preamble in RF communication systems, valued for its sharp correlation peak, constant amplitude, and periodic nature. This article explores its mathematical properties, performance under different parameters, and real-world applications, including robust frame detection in noisy environments. Experimental results with a Pluto SDR demonstrate the ZC sequence's effectiveness in identifying OFDM frame boundaries and recovering transmitted symbols reliably.

Henry Chen 12 Jan 2025

9 Minute Read