# DOOM ported to $30 FNIRSI DMC-100 clamp meter with 32 KB RAM

> **Key takeaway:** Artur Bieniek ported the doomgeneric engine to a $30 FNIRSI DMC-100 clamp meter running on an Artery AT32F415 chip with only 32 KB of RAM.

**Published:** 2026-10-23T08:00:17+00:00 
**Source:** Hackaday Hardware 
**Category:** open-hardware 
**Canonical URL:** https://fosswire.org/news/doom-ported-to-30-fnirsi-dmc-100-clamp-meter-with-32-kb-ram.html 

## Summary
The classic shooter DOOM now runs on a $30 FNIRSI DMC-100 clamp meter, one of the most constrained devices to receive a port. Developer Artur Bieniek adapted the doomgeneric engine to run on the meter's Artery AT32F415 microcontroller, which offers a 150 MHz clock but only 32 KB of RAM. The port includes the full first episode of Freedoom: Phase 1 with all nine maps, menus, save slots, and even buzzer-based sound effects, displayed on the device's 320 x 240 screen and controlled via a DJI drone controller.

## How DOOM runs on 32 KB of RAM
- **MCU**: Artery AT32F415 at 150 MHz with only 32 KB RAM, making this one of the lowest-RAM DOOM ports known
- **Display**: 320 x 240 color LCD native to the clamp meter
- **Storage**: Full Episode 1 of Freedoom: Phase 1 loaded, including E1M1 through E1M9, title screen, intermissions, finale, menu system, and four save slots
- **Audio**: Sound effects output through the device's built-in buzzer
- **Input**: DJI RC-N1 drone controller used for gameplay input rather than the meter's native buttons

## Why it matters
The port demonstrates the continued viability of the doomgeneric abstraction layer for extreme embedded targets and highlights how capable inexpensive ARM Cortex-M4 microcontrollers have become for unexpected applications.