
Em's Metal Detectors
A mod that aims to make mining less tedious! Create 3 metal detectors to help you locate ores!
Screenshots





About this Mod
A Fabric 1.21.7 Mod Made for an SMP I am on!
There are 3 metal detectors in the mod! The metal detector detects iron ore, redstone ore, and diamond ore, within an 11x11x11 cube. The ancient debris and diamond detector detect their respective blocks within a 21x11x21 prism.
They are all made with 2 redstone dust in the bottom corners, a stick in the bottom middle, 4 copper ingots on the left and right sides, and a resonating core in the middle! the top middle item determines what it detects, with an iron ingot making a metal detector, a diamond making a diamond detector, and netherite scrap making an ancient debris detector. The resonating core is simply made using one amethyst shard, one redstone dust, and one diamond in any pattern.
Because this mod was made for a server and I am a beginner mod developer, this mod will not be ported to neoforge/forge and will most likely remain on 1.21.7! The source code, however is available for free on my github if you want to port it, just credit me if you do :p
Available Versions
How to Install Em's Metal Detectors on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.7).
Install Mod
Open the mod browser in the dashboard and search for "Em's Metal Detectors". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.7, 1.21.1, 1.21
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Em's Metal Detectors server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.7). You can switch loaders with one click in the panel.
Is Em's Metal Detectors compatible with fabric?
Em's Metal Detectors officially supports fabric for Minecraft 1.21.7, 1.21.1, 1.21. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Em's Metal Detectors – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Em's Metal Detectors consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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