[WIP] Platsa Enclosure Electronics

I am building a enclosure for my 3d printer based around the IKEA Platsa cabinet and wanted to have a way to run my BentoBox / Enclosure exhaust fan until any potential fumes etc. have been filtered out. So I decided to include a VOC and PM2.5 sensor using an ESP32 as a controller for fans and the sensors. 

The connection interface between the two components is a Molex Mini-Fit jr. Connector (basically a 4-pin CPU connector). 

PSU Box

The "PSU-Box" consists of three parts, the basic case, the plug wall and the top. In the pictures the plug wall uses magnets, but I was not satisfied with the structural integrity of those so the 3d models now use a screw based approach (which is also used for mounting the c14 plug  & switch combo). 

Parts needed: 

• 2x Wago 221-413 with 5 connections 
• 1x MW 5V PSU 
• 4x Fuse holder with screw caps
• Fuses 
• 1x  C-14 plug
• 1x 4-Pin Molex Mini-Fit jr. Housing
• Boost Converter
• M3, M2.5, M2 Heatinserts + Screws, I used those from CNC Kitchen
• A USB-C connector for the raspberry pi 

Sensor Case

The case with the sensors and ESP32 that should go into the enclosure is not finished yet, that's why this is a WIP. 

But here is a rough outline what this will contain: 

• SGP41 - VOC sensor
• SHT30 - Temperature & Humidity Sensor
• PSM5003 - PM2.5 sensor
• Relay to power leds on/off (for LED mounting see additionally used models)
• IRLZ34N Mosfet to control the BentoBox fans 
• Noctua NF-F12 iPPC-3000 (see additionally used models for mount)

Github

The ESPHome configuration for the ESP32, a rough connection diagram and a detailed outline of the project can be found on Github (also WIP). 

Additionally used models

• Raspberry Pi fan mount (by xKen_237610)
• Platsa Fan with filter (by MrNeedlemouse)
• Platsa LED mount (by ShaunDoe)
• BentoBox (by thrutheframe)
• WAGO Terminal Mount (embedded into the design, by Qincon_17109)

Print settings

Printed everything with BavariaFilaments PETG @.32mm layer height with a .6mm nozzle.