Mario Zechner
@badlogicgames
Armin's handler at https://t.co/B05ybKGkzx. Old man yelling at Claudes. https://t.co/Q1wG57v1yc https://t.co/mnOoWUr0TO https://t.co/8i5vIRE0Wn
pi
“His own minimal open-source coding agent (~80k stars). Built it after Claude Code 'turned into a spaceship'; won Terminal-Bench 2.0, now developed at Earendil.”
Claude Code
“Daily driver from April 2025 on a Claude Max plan (Opus + Sonnet, Haiku for cheap subtasks). Built claude-trace, claude-bridge and cchistory around it.”
VS Code
“'I actually like VS Code for code exploration.' Used Cursor for 1.5 years before switching to Claude Code, then pi.”
TypeScript
“His current primary language: pi, lemmy and all his CLI tools are TypeScript. Java (libGDX) and C/C++ before that.”
libGDX
“The cross-platform Java game framework he created in 2009 (~25k stars). Powered Slay the Spire. Duke's Choice Award 2014.”
heisse-preise.io
“His Austrian grocery price tracker. Prototyped in 2 hours after the government said it would take months; surfaced evidence of coordinated pricing, made national news.”
Hetzner
“All his projects run on a Hetzner server, 'a potato that costs 30 euros a month'.”
MacBook Pro M1 Max (64GB)
“His primary (and seemingly only) dev machine since ~2022. Even his robot's brain runs on it. No desktop GPU rig: cloud pods instead.”
Bambu Lab X1 Carbon
“'The X1 Carbon just works.' Printed the Boxie enclosures and cartridges on it.”
Original Prusa 3D printer
“'I do own a Prusa printer as well' (model unstated). Both printers live away from home.”
Saleae Logic Pro 8
“Logic analyzer that 'came in handy a LOT' while debugging Boxie's custom PCBs.”
Klein Tools TI290 Thermal Imager
“For spotting hot components and shorts on freshly soldered boards.”
Rode PSA1 Boom Arm
“Mic boom arm repurposed as a microscope mount via a 3D-printed adapter.”
iFixit Pro Tech Toolkit
“iFixit bits and tweezers on the bench ('overpriced' by his own admission, bought anyway).”
Adafruit FT232H
“USB-to-GPIO board that drives 'pipi', the robot he built from a 10-dollar toy.”
Arduino Starter Kit
“Where his electronics journey started: documented the whole 564.91 euro shopping list in 'Electronic Nights'.”
Boxie
“The offline kids' audio player he designed and soldered himself for his son: ESP32-S3, custom PCBs, 72 cartridges. It runs Doom.”
Beginning Android Games
“The Apress book he wrote. Taught a generation of Android game devs.”