---
title: "FPV & UAV"
description: "Alex Khaerov's FPV drone hobby — DIY builds in the 3.5″ to 5″ range, component sourcing, tuning, and flying with DJI O3 digital systems. An electronics engineer's take on the FPV craft."
url: https://hayorov.me/fpv/
markdown_url: https://hayorov.me/fpv/index.md
json_url: https://hayorov.me/fpv/index.json
type: page
author: Alex Khaerov
author_url: https://hayorov.me/
date: 2021-07-03
lastmod: 2026-03-02
language: en
word_count: 145
---

# FPV & UAV

> Alex Khaerov's FPV drone hobby — DIY builds in the 3.5″ to 5″ range, component sourcing, tuning, and flying with DJI O3 digital systems. An electronics engineer's take on the FPV craft.

I’m an FPV drone DIY enthusiast—I love designing, building, and tuning drones from scratch. While I’m still a rookie UAV pilot, what I enjoy most is the engineering side: bulk sourcing components, optimizing performance, and using my technical skills to bring it all together. Flying is just a bonus that makes the hobby even more rewarding in my spare time.

I’m focused on DIY FPV builds in the 3.5" to 5" range. As an electronics engineer, I spend more time on engineering, assembly, configuration, and tuning than flight practice.

![Wallboard of my FPV/UAV setup, January 2026](https://hayorov.me/fpv/uav-board-jan26.png)

This wallboard is my January 2026 setup: a pair of AOS 3.5" drones with DJI O3 air units, plus a DJI Mini Pro 4 as a fun footage drone I bought recently. I started right away with digital and never really flew analog, moving from Caddx Walksnail to DJI and now mostly using the O3 system.

---

Canonical HTML page: https://hayorov.me/fpv/
Structured JSON: https://hayorov.me/fpv/index.json
Site index for AI agents: https://hayorov.me/llms.txt