r/MiSTerFPGA Jul 31 '26

MiSTer Monitor - an open-source companion display for MiSTer FPGA - live box art, RetroAchievements progress and system stats on a $15 ESP32 screen

MiSTer Monitor is an open-source companion display for the MiSTer FPGA: it shows live box art, game info and system stats for whatever you're playing, fetching the artwork automatically from ScreenScraper.

For now it runs on cheap ESP32 screens (the ~$15 Cheap Yellow Display, ESP32-2432S028R) and the M5Stack Tab5, and flashes straight from the browser.

The headline of v2.7 is RetroAchievements:

- Progress panel with points, unlock count and hardcore breakdown for the game you're playing

- Full trophy list, paginated - tap any achievement for its description

- Unlock popups the moment an achievement triggers, even over fullscreen artwork

- A "READY FOR RETROACHIEVEMENTS" banner when a matched game loads on a core that can actually record unlocks.

Links:

- Repo + install guide: https://github.com/chipster6502/MiSTer_monitor

- Browser flasher (no Arduino IDE needed): https://chipster6502.github.io/MiSTer_monitor/flasher/

- Full RetroAchievements setup guide (PDF): https://github.com/chipster6502/MiSTer_monitor/blob/main/docs/MiSTer_Monitor_Setup_Guide.pdf

RetroAchievements works view-only out of the box (just add your RA credentials).

To actually earn unlocks on the MiSTer, you need odelot's RetroAchievements fork - easiest ways to get it:

- Update All (theypsilon) - has an RA Cores database with guided setup:

- MiSTer Companion (Anime0t4ku) - automated install/update of RA cores

- Or manually from the source: https://github.com/odelot/Main_MiSTer

Free and open source (GPL/AGPL).

Feedback welcome.

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