SerialCraft
SerialCraft connects an Arduino serial device to Minecraft, so physical buttons, switches and potentiometers can drive in-game redstone and the reverse.
What it does
Players build a laptop block from resources gathered in survival, then right-click it to open a four-page interface named Home, Connection, Boards and Console. Port scanning runs automatically, so players do not need to know which COM port their board uses. Wiring real buttons, sensors and switches to the board lets them control redstone circuits in the world, and an IO Block in output mode reads redstone signals and sends them to the board.
Values run from 0 to 255 in both directions, and the mod converts the 0-15 scale of redstone power to and from that range. A real potentiometer can set the strength of a redstone line, and a comparator's power level can set an LED's brightness through PWM. The mod is a Fabric project for 1.21.10 and 1.21.11, released under the MIT License and open source, with its source code, issue tracker and wiki public. CC: Tweaked is an optional dependency, and the environment is client and server, so the server and every player need the mod.
Key features
Serial link to Arduino
Real-time bidirectional communication runs between an Arduino serial device and the Minecraft world.
Laptop interface
A craftable laptop block opens a four-page interface for connection setup, boards and a console.
Redstone conversion
Signals are mapped between the 0-255 device range and redstone's 0-15 power scale in both directions.
Physical inputs and outputs
Buttons, sensors and switches wired to the board feed redstone, and in-game levers can fire a buzzer on the desk.
Experimental educational build
Developed as a learning project, it shows how programming logic can mirror the layout of a physical circuit.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Optional 1
How it compares
Integrated circuit is open source under the MIT License, runs client and server and covers 1.19.2 – 26.3 on Fabric. Redstone Helper is also open source, under the Apache License 2.0, and is a Fabric mod for 1.20.4 – 1.21.4 that is optional on either side. Circuit is not open source, uses the Creative Commons Attribution Non Commercial No Derivatives 4.0 license, and needs the client for 1.21 – 1.21.11 while the server stays optional.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| SerialCraft | Fabric | 1.21.10 – 1.21.11 | Client and server | 2026-08-01 |
| Integrated circuit | Fabric | 1.19.2 – 26.3 | Client and server | 2026-09-17 |
| Redstone Helper | Fabric | 1.20.4 – 1.21.4 | Client or server, optional | 2025-07-17 |
| Circuit | Fabric | 1.21 – 1.21.11 | Client required, server optional | 2026-06-14 |
Questions
Does SerialCraft need CC: Tweaked?
Do players need to know which COM port the board uses?
Which game versions does SerialCraft support?
In the catalog
SerialCraft is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
SerialCraft is an experimental, educational mod that breaks the fourth wall: real-time bidirectional communication between an Arduino (or any serial device) and Minecraft, written in Java on Fabric. It is not just a tech demo. It is designed to fit naturally into a Survival playthrough, turning external electronics…
Official listing
- Modrinth page
- modrinth.com/mod/serialcraft
- Owner
- LeonardoAliaga
- Published
- 2025-11-25
- Updated on Modrinth
- 2026-08-01
- Facts verified
- 2026-10-15