This module is part of a versatile series, designed to help you build a customized 12V system tailored to your specific needs. The modules are designed to integrate seamlessly with 20mm x 20mm extrusions, making it easy to build and securely contain your system.

Explore the full range of modules in my 12v Systems Collection to unlock endless possibilities for your design.

Master Types

There are 4 different plates for this, each with their own print profile, you may or may not need to print all of them, however, I would strongly recommend having at least 1 master switch to isolate all the components when upgrading etc. Personally I used one for each subsystem as well. The different types are:

• Master. Master on/off switch.
• Master Timer. Master switch for timer sub system.
• Master Light Sensor. Master switch for light sensor sub system.
• Master Always On. Master switch for 24/7 connections.

Bill of Materials

For each type of master module you will need:

Four M5x10mm bolts

Four M5 T-Slot nuts.

Two M3 x 16mm bolts

Two M3 hex nuts

Wire (at a minimum 0.75mm 2 core)

Terminal Blocks (2 x 2 piece)

One Amp and Current display (available at amazon)

12v switch with LED (I used this one sourced locally) which has a diameter of 24.5. If you struggle to find the right size I will gladly try and make a new plate with the dimensions required. Please ask

Building

Secure the Module to the Extrusions

Insert the M5 nuts into the larger holes and attach them using T-slot nuts. This will allow you to securely mount the module onto the 20mm x 20mm extrusions.

Attach the Terminal Blocks

Use the M3 bolts to fasten the terminal blocks onto the rear of the mounting plate. Ensure all bolts are tightened evenly for a secure fit.

Connect the Wiring

Once the terminal blocks are mounted, add the necessary wires to connect it to other modules in your 12V system. Double-check all connections to ensure proper functionality.

Test Before You Connect

Before adding the module to your 12V system, it's essential to test it independently to ensure proper functionality and avoid potential issues:

Prepare for Testing

Connect the module to a suitable 12V power source using temporary wiring.

Ensure the connections are secure and insulated to prevent short circuits.

Verify Output

Use a multimeter to measure the module's output. Check that the voltage and current match the expected specifications.

Confirm that the module powers up without any irregular behavior, such as overheating, unexpected noise, or flickering.

Test Load Handling

If applicable, connect a small test load to simulate its operation under typical conditions. Monitor performance for stability and reliability.

Inspect for Faults

Visually inspect the module for any signs of damage or malfunction, such as loose components or burnt traces.

Once the module passes these tests, it’s ready to be integrated into your 12V system. Thorough testing helps ensure smooth operation and protects your other modules from potential issues.

Summary

This system operates on 12V electricity. While the voltage is relatively low, there is still a potential risk, so caution is essential during setup and operation.

Please note that none of the modules in this collection include specific wiring instructions. If you require guidance, there are numerous resources available online, including detailed tutorials on platforms like YouTube.

Always exercise care, and thoroughly test each module individually and in combination with your subsystems to ensure safe and reliable operation.

Hope you find it useful!