Electronics & Repair
Board-level troubleshooting, power supplies, displays, controllers and smart-home equipment.
Electronics · Embedded · Software
I like finding out
how things really work.
I'm Ehsan Varasteh — an electronics engineer, embedded tinkerer and software developer. I build, repair, reverse-engineer and document the interesting stuff I run into.
From a switching regulator to a broken firmware image, I enjoy going one layer deeper.
01 / ABOUT
A practical engineer
with a curious brain.
My interests sit at the intersection of hardware and software: microcontrollers, PCB-level electronics, embedded Linux, networking, automation and reverse engineering.
I don't particularly care whether a problem is labeled hardware or software. If there is a board, a binary, a protocol or a weird old device in front of me, the fun part is figuring it out.
02 / WHAT I DO
Embedded & Firmware
Microcontrollers, low-level C/C++, Python/MicroPython, serial buses and the tiny details between them.
Reverse Engineering
Old binaries, undocumented protocols and abandoned hardware are not necessarily dead ends.
Software & Linux
Small tools that solve real problems: automation, networking, download tooling, scripts and experiments.
03 / SELECTED PROJECTS
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psiphon-builder
Automated multi-platform builds of Psiphon Tunnel Core.
yt-dlp
Working with and extending a powerful open-source media downloader.
uBMP
A tiny BMP reader for microcontrollers and RAM-constrained devices.
SoftUART
Software UART for AVR-based microcontrollers.
aria2c-tools
Small utilities for recovering and managing aria2c downloads.
channel-editor
A Python tool for editing DVB CHN channel files.
Z
04 / ZAXIS.IR
Where I used to write
things down.
Zaxis is my Persian technical blog: practical electronics, MicroPython, Raspberry Pi, memory, RF remotes, networking, CNC and whatever else seemed worth understanding.
Read Zaxis ↗05 / RIGHT NOW
Still taking things apart.
Still building them back.
Lately that means embedded systems, reverse engineering old hardware, Linux networking, Rust and tools that make engineering work less painful.