CurseForge · Minecraft mod
Redstone Pen
Adds a pen to draw Redstone selectively and optimized, as well as signal repeating relays, and a Redstone logic controller.
This page is having a moment, so a few details may be a little behind.
Quick answer
Which Redstone Pen release should I use?
Redstone Pen redstonepen-1.21.1-fabric-1.11.43.jar targets 1.21.1 with Fabric. The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server. No extra mods listed for this file.
Where it goes
Is Redstone Pen required on the client, server, or both?
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
The source does not explicitly classify this release as client-only or server-only.
What else does Redstone Pen redstonepen-1.21.1-fabric-1.11.43.jar need?
redstonepen-1.21.1-fabric-1.11.43.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Redstone Pen without breaking your instance.
Built for Redstone Pen redstonepen-1.21.1-fabric-1.11.43.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use redstonepen-1.21.1-fabric-1.11.43.jar. It targets 1.21.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside redstonepen-1.21.1-fabric-1.11.43.jar. It opens that exact file at the source.
About this project
What does Redstone Pen add?
[[--- Retiring ---]]
Hey Ladies and guys, I'm slowly but steadily retiring from my modding hobby, so the mod is EOL and will not be under active development as of MC1.21.1. Checkout the references section below for alternative mods created by the community, and I'd be glad to see if some of the mod features are re-used somewhere. Cheer's, WilE.
[ Note: The first Fabric version of the mod is for Minecraft 1.19. Files are then named redstonepen-<minecraftversion>-<forge/fabric>-<modversion>.jar ].
Adds "one pen to draw them all" - and helps with simpler Redstone handling.

Block Signal Connectors: Especially for compact wiring it is desirable to decide weather a Track shall power the block underneath or not. Therefore the Pen-Tracks do normally NOT connect to the block they are drawn on. To change this, simply add an explicit connector by clicking the centre of a Track with a Pen (see the round blob in the image). Tracks do intentionally not pass indirect power (through blocks) to other Tracks, so you can power said blocks from independent routes without interferences:

Redstone Quill and Pen Items
Craft and use them to draw or remove thin Redstone Tracks. Multiple independent tracks through one block space are possible. There are two versions:
The Redstone Quill uses Redstone dust directly from your inventory.
The Redstone Pen stores Redstone in the item, and can be refilled in the crafting grid with Redstone Dust or Redstone Blocks.
Both allow to inspect the current signal of a block, track, wire, or device by sneaking while you hold the pen/quill and look at the block of interest.
Both do not destroy blocks when left-clicking, except blocks with no hardness (like grass, repeaters, or comparators).
Redstone Relays
Relays are like redstone powered "solenoids" that move builtin Redstone Torches back or forth, so that they re-power ("re-lay") Redstone signals to 15. They can be placed on solid faces in all directions. Output is only to the front, inputs are at all sides except from above. The internal mechanics ("relay types") define what happens at the output side when the input signals change (relay, invert, flip etc). Relays also detect indirect power from blocks they are placed on, and can therfore be used to pass Track signals through blocks.

Redstone Relay: Straight forward Input-On-Output-On relay. Different from a Repeater it has no switch-on delay, but instead a switch-off delay of one tick (redstone-tick=100ms).
Inverted Redstone Relay: Input-On-Output-Off relay. Switch-on delay 1 tick, no off delay.
Bi-Stable Redstone Relay: Flips when detecting a off-to-on transition at the input ("rising edge"; input off->on --> output changes).
Pulse Redstone Relay: Emits a short pulse at the output side when detecting a off-to-on transition at the input ("rising edge").
Bridging Relay: A Redstone Relay allowing to cross tracks. It forwards power back to front like a normal Relay, and has an additional independent wire left-to-right.
Redstone Logic Controller: PLC-like redstone signal I/O block. Programming is simplified with math expression assignments, e.g. "R = G AND (Y OR B OR U XOR D)" or "Y = (G > 4) AND (B <= R)". Ports are in all directions (lateral by color: R,G,B,Y, vertical (U=up, D=down), and support "comparator override" input modes. Provided elements known from PLCs are timers (TON, TOFF, TP), edge triggers, counters, arithmetic functions like minimum, maximum, mean, limiting, and some auxiliary functions like game time (ticks) day time, random number, inline conditional (R = IF(condition, true-value, false-value) ), etc. Brief help reference is included as tooltips at the left side of the GUI. More details and examples about the RLC on the github here.


Recipes





References
Discord: As a platform for community exchange, the Redstone Pen has a channel on the Modded Redstone Discord server (ty Oka/Aerotactics for providing and moderating this).
The mod is inspired by the 1.12 Redstone Paste mod (bit different, okay, but I was simply missing the Paste in 1.13+).
Thanks to tryaq for the Pen item model design!
Wege has made a resource pack with really stylish textures for the Redstone Pen mod, take a look here.
Brief Intro/How-To posted on the Tube here:
Current mod list by me: Engineer's Decor, Gauges and Switches, Engineer's Tools, Anthill Inside, Redstone Pen, WilE's Collection
Project description from CurseForge.
Pick your setup
Redstone Pen by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21
2 loader builds1.20.6
1 loader build1.20.5-Snapshot
1 loader build1.20.5
1 loader build1.20.4
3 loader builds1.20.3
1 loader build1.20.2
1 loader build1.20.1
3 loader builds1.19.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Redstone Pen versions and loaders
redstonepen-1.21.1-fabric-1.11.43.jar
25 Jan 2025
redstonepen-1.21-neoforge-1.11.42.jar
19 Jan 2025
redstonepen-1.21.1-fabric-1.11.42.jar
17 Jan 2025
redstonepen-1.21-neoforge-1.11.41.jar
28 Sept 2024
redstonepen-1.21-neoforge-1.11.39.jar
15 Sept 2024
redstonepen-1.21-fabric-1.11.41.jar
15 Sept 2024
redstonepen-1.21-fabric-1.11.40.jar
21 Aug 2024
redstonepen-1.21-fabric-1.11.39.jar
16 Aug 2024
redstonepen-1.21-neoforge-1.11.38.jar
2 Aug 2024
redstonepen-1.21-fabric-1.11.38.jar
2 Aug 2024
redstonepen-1.21-fabric-1.11.37.jar
1 Aug 2024
redstonepen-1.20.4-neoforge-1.8.37.jar
31 Jul 2024
Looking for an older file? The official CurseForge project page is in Resources.