Redstone Signal Visualizer
by MPGod42
Redstone Signal Visualizer shows redstone signal strength across the world, so players can read a circuit's state at a glance while building.
What it does
The mod renders redstone signal strength in real time, with colors and opacity for each signal type, so a circuit's state is visible without opening a debug screen. Signal types can be toggled on and off, so emitters, receivers and comparators can be shown separately, and the default, obstructed and comparator colors can be set.
The server computes the true state of redstone in the world, comparator outputs included, and the client draws the overlays and handles per-player settings. Players must install the mod, while a server may add it for extra features. Without a server component, the client performs a local inspection that lacks comparator-level accuracy.
Update delay, radius and refresh interval can be tuned per player, which trades responsiveness against CPU, network and client cost. The mod is published for Fabric, Forge, NeoForge and Quilt, with files for 1.16.5 – 26.3, and is released under All rights reserved, so it is not open source.
Key features
Live signal strength view
Redstone signal strength is shown in real time as it propagates through a circuit, with numeric values visible.
Signal type toggles
showEmits, showReceives and showComparators switch each signal type on or off for the rendered overlay.
Adjustable colors and opacity
Default, obstructed, emitter and comparator signals each have their own color and opacity settings.
Radius and refresh limits
A radius caps how far signals are visualized, and a refresh interval in milliseconds sets how often the view updates.
Gallery
Compatibility
Latest build for each game version and loader.
26.x3 of 3 versions with builds
1.21.x9 of 9 versions with builds
1.20.x1 of 1 version with builds
1.19.x1 of 1 version with builds
1.18.x1 of 1 version with builds
1.17.x1 of 1 version with builds
1.16.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Variable Copper Bulb Signal is server-side only, released under the MIT License, and published for 1.21 – 26.1.2 on all four loaders, so players can join without installing anything. Sticky Redstone runs on both client and server and is published for 26.1 – 26.3 under All rights reserved, which makes it closer in version range and license terms to this mod. Sound Visualizer is client-side only, released under the MIT License, and covers 1.20.1 – 26.1.2, but it shows sound rather than redstone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Redstone Signal Visualizer | Fabric, Forge, NeoForge and Quilt | 1.16.5 – 26.3 | Client required, server optional | 2026-09-27 |
| Variable Copper Bulb Signal | Fabric, Forge, NeoForge and Quilt | 1.21 – 26.1.2 | Server-side only | 2026-07-04 |
| Sticky Redstone | Fabric, Forge, NeoForge and Quilt | 26.1 – 26.3 | Client and server | 2026-09-15 |
| Sound Visualizer | Fabric, Forge and NeoForge | 1.20.1 – 26.1.2 | Client-side only | 2026-05-30 |
Questions
Does the server need Redstone Signal Visualizer installed?
Why is comparator output less accurate without the server component?
Can a player reduce the performance cost of the overlay?
In the catalog
Redstone Signal Visualizer is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
See every redstone signal at a glance — debug, optimize, and design with confidence. This mod splits responsibilities between server and client: the server performs authoritative sampling of redstone state (including comparator outputs and other values the client is not allowed to access), ensuring visualizations…
Official listing
- Modrinth page
- modrinth.com/mod/redstone_signal_visualizer
- Owner
- MPGod42
- Published
- 2025-01-19
- Updated on Modrinth
- 2026-09-27
- Facts verified
- 2026-10-15