Introspective Comparator
by Sertion
Introspective Comparator adds two redstone blocks that read the analog output signal of the block they face, the same strength reading a comparator gives.
What it does
The standard comparator reads the analog output of the block it is attached to. This mod's blocks do the same, and they can also read the redstone signal sent by a powered block on an attached side, which lets a barrel or other modded block be measured directly. Item frames are supported as targets as well.
The Introspective Comparator works in the familiar compare and subtract modes, toggled the same way as a vanilla comparator. It accepts a signal from a block placed behind it and can read through a solid block, so a container separated from the device by a wall still reports its contents. The inverted variant sends out a signal of 15 and reads an analog output of 0 as strength 15, and an analog output of 15 as strength 0, with subtraction modes applied to the inverted signal.
The mod is published for NeoForge only, for three game versions, 1.21.11, 26.1.2 and 26.2, with 1.0.1 for 26.2 as the latest file. It runs on client and server, so the server and every player need it, and it is released under the MIT License as open source, with source code publicly available.
Key features
Analog signal reading
Both blocks read the analog output of the target, matching the strength a vanilla comparator reports.
Signal through solid blocks
The device can read a container through a solid block placed between it and the target.
Compare and subtract modes
Modes are switched the way a vanilla comparator switches them, and subtraction is applied to the input signal.
Inverted variant
The inverted block reverses the signal, sending 15 and mapping analog 0 to strength 15 and analog 15 to strength 0.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Measuring modded storage
A barrel or other modded container can be checked by a redstone signal without placing a vanilla comparator against it directly.
Item frame reading
Item frames can be used as targets, so the signal they report can be routed into redstone circuits.
Who it’s for: Players building redstone machines with inventories or modded blocks, and server owners who want to read storage through walls.
Questions
Does Introspective Comparator need to be installed on the server?
Which loader and versions does Introspective Comparator support?
Is Introspective Comparator open source?
In the catalog
Introspective Comparator is one of 36,990 Utility mods on ModsFinder, and one of 13,477 Utility mods for NeoForge. 13,894 mods support Minecraft 26.2.
Similar mods
What the author says
Both blocks read the analog output signal, like a comparator, and not the block's redstone signal strength. This means it will not be powered by being attached to the side of a redstone block, but can send a powered signal to an adjacent inventory like a barrel or modded blocks. Like with a regular Minecraft…
Official listing
- Modrinth page
- modrinth.com/mod/introspective-comparator
- Owner
- Sertion
- Published
- 2026-01-10
- Updated on Modrinth
- 2026-08-10
- Facts verified
- 2026-10-15