Clamp Meter DOOM: FNIRSI DMC-100 Runs Freedoom on Custom Firmware
By Indie Kings | October 25, 2026
Updated October 25, 2026: A hobbyist ported DOOM to a $30 FNIRSI DMC-100 clamp meter, running Freedoom with custom firmware on a microcontroller that normally measures current.
Image: Digital multimeter via Wikimedia Commons, same tool category as the FNIRSI DMC-100 clamp meter.
What got ported
A hobbyist going by Artur Bieniek got the doomgeneric engine running on the FNIRSI DMC-100 digital clamp meter. The device displays E1M1 to E1M9 in full color and is controlled from a separate DJI drone controller, which connects to the meter for movement and action inputs.
Why the chip could do it
The DMC-100 uses an Artery AT32F415 microcontroller, which is apparently strong enough to carry the game logic and graphics needs of the DOOM engine. The port replaces the meter entirely with custom firmware; as a result, the clamp meter can no longer measure anything while that firmware is active.
What the meter lost
| Aspect | Detail |
|---|---|
| Device | FNIRSI DMC-100 digital clamp meter, generally $30 to $50 |
| Microcontroller | Artery AT32F415 |
| Game ported | Freedoom: Phase 1 (E1M1 through E1M9) |
| Engine basis | doomgeneric |
| Controller | DJI drone controller, separate device |
| State while played | Meter stops measuring entirely |
| Warranty | Voided by custom firmware |
FAQ
Can it still measure current?
No, per the source the meter stops doing any measurement while DOOM firmware is active.
Who did the port?
A hobbyist going by Artur Bieniek.
What game mode was ported?
Freedoom: Phase 1, levels E1M1 through E1M9.
What engine does it use?
The doomgeneric engine.
Was this official support?
No, this is a hobbyist custom firmware port.
Does it void the warranty?
Yes, the source says so explicitly.
Bottom Line
DOOM now runs on a $30 measurement tool that you cannot actually use to measure anything while you are doing it, because the custom firmware replaces the business of being a meter entirely. Pure hobbyist banter, but it shows how far microcontroller power has crept.
Sources
- handheld.guru: Hobbyist Ports DOOM to FNIRSI DMC-100 Clamp Meter Using Artery AT32F415 Chip, Oct 24 2026, accessed 25 October 2026
- Source cited: IXBT, per handheld.guru
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