Redstone Radars are redstone-enabled structures that allow players to track each other on the server. This plugin is ideal for raid/tracking servers.
By default, a redstone radar is a tower made out of obsidian blocks and a redstone block on top. The taller the tower, the higher its detection range. On one side of the base block (the bottom-most block of the tower), there should be redstone wire, a button or a pressure plate. On the other side, there should be a gold block and a redstone repeater facing outwards.

Using Redstone Radars
A radar should have a redstone wire, a button, a lever or a pressure plate on one side, powering the tower. When it is powered, then the radar is activated. When a radar is activated, the redstone repeater placed near the gold block will emit power if and only if an online player is detected within range. So, by activating radars of different sizes, and in different locations of the map, it is possible to figure out the approximate position of a player.
The minimum range is 25 blocks, by default. This means that players within very close range will not be detected, including the operator of the redstone radar.
The detection range is 50 blocks multiplied by the height of the tower. In other words, if the radar is built with 10 obsidian blocks, the range will be 500 blocks, and if the radar's height is 50 blocks, then the range will be 2500 blocks.

Installation and Configuration
To install the plugin on a server, copy the .jar file to the plugins folder.
The base block, which is by default obsidian, can be changed in config.yml to a different type of block. The minimum range, maximum tower height and range per block can also be changed.
Commands
Admins may use the following commands:
- /redstoneradars version - Get the plugin's version
- /redstoneradars disable - Disable tracking
- /redstoneradars enable - Enable tracking
- /redstoneradars find <range> - Find recently used radars in range
Permissions
There are two permission nodes:
- redstoneradars.admin - Allows you to use the redstone radars admin command (defaults to ops only).
- redstoneradars.undetectable - Will make you undetectable by redstone radars (defaults to no one)