4 channel relay module box

thingiverse

My custom-built relay enclosure. This project houses my four-channel relay module that controls various Christmas light displays. The enclosure consists of a box, lid, and shelf to keep everything organized. A wire access hole is situated on the left side of the box for easy connection and disconnection. Four small square openings are strategically placed for the relay's LED indicators, ensuring they're visible and easily accessible. Meanwhile, four holes on the backside allow me to reach the relay wires with ease, providing direct access to the common and normally open contacts. The enclosure also accommodates an Arduino Nano microcontroller, which enables seamless integration of my custom automation projects. R1 Revision Update: I recently acquired another four-channel relay board and discovered that my initial LED holes didn't perfectly align with the LEDs. To resolve this issue, I carefully adjusted the position of the LED holes to ensure they now line up precisely. Furthermore, I upgraded the relay access holes, allowing me to reach all three contacts: common, normally closed (NC), and normally open (NO). Given my 3D printer's limitations in printing over a 30mm bridge, I created 12 smaller holes for the relay contacts. This modification has resulted in perfectly aligned contact holes.