Minecraft Java 1.21 Mods
Browse 11 free mods for Minecraft Java 1.21 — popular picks include Electromechanics, Redstone Helper, Create: Enhanced Iron Processing.
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Electromechanics
An addition to the existing Redstone ecosystem mechanically and electrically
Redstone Helper
Mod which must you to help with redstone!
Create: Enhanced Iron Processing
This is a datapack that adds a custom mixing recipe to produce crimsite renewably to enhance your iron and redstone farms.
Amarong
Adds a new material called Amarong, handheld "rubber" ducks, kaleidoscopes, and rainbow beacons with no redstone required
Laseredstone
Redstone but we use lasers to transfer signals
Create: Portal Integration
Add portal support to cart contraption, coupled cart, and compatibility with other portal mods.
CU later
My take on a datapack that replaces redstone component's iron with copper (and some other tweaks)
Bacon SMP
The Bacon SMP is a mod that introduces custom weapons and a redstone-powered string duper to the game. The custom weapons are crafted from valuable materials. This mod is still in development. There are many bugs.
SerialCraft
Bring Redstone to life! A simple mod to connect Arduino and Minecraft via serial port. No complications, just plug and play.
Hot Redstone Wires
Wires get hot! Makes redstone dust and blocks painful to step on.
Beyond The Simulation
Grow a Lab Grown Brain that Connects Redstone Beyond the Distances, Dimensions, Worlds, Servers and Realities? (yes, connect redstone to real life)