Bambu Poop Conveyor - Version 2 (ESP32 Housing)

This is Version 2 of the electronics housing for the Bambu conveyor ESP32 application

Version 2 Improvements:

• (5/9/25) UPDATE - H2D now supported in version 1.3.7 as well as major stability updates. 

• Motion Detection mode—Now you can attach infrared IR Sensor for motion detection if you dont want to use MQTT connection. 

• Dedicated ESP32 Web installer for easier setup Bambu Conveyor ESP32 Web Installer

• Completely redesigned from the ground up for improved functionality and ease of assembly.

• Integrated motor mount for a cleaner, more secure fit.

• Built-in ESP32 and motor controller mounts—no extra brackets needed.

• Dedicated LED housing—no longer required to glue LEDs to the model.

• Slightly increased LED window size for better visibility.

• (Wiring) Lower 470Ω resistor vs. 1000Ω—LEDs are now slightly brighter.

• Redesigned motor connector. This is the piece that connects the motor to the conveyor system, its now a tighter fit for better reliability and stability. Its also now one piece instead of two separate pieces. 

In short - this version makes assembly 10x easier. 

Two Modes of Operation: MQTT Detection or Motion Detection (IR)

Two methods for triggering the conveyor, depending on your printer model and preference.

1. MQTT Mode (Recommended for X1C) (Default setting)

• Best suited for X1C printers due to their more powerful CPU, which handles MQTT updates more efficiently.
• Listens for printer status changes (Change Filament status and Clean nozzle status) and automatically activates the conveyor when needed.
• Requires a stable network connection.

2. IR Motion Detection Mode (Better for P1 & A1 Series)

• Ideal for P1 and A1 series printers, where MQTT performance can be inconsistent.
• Uses the HiLetgo AM312 PIR sensor to detect movement and trigger the conveyor.
• Works independently of network conditions, making it a more reliable option for some setups.

Links

Full project documentation with wiring diagram: https://t0nyz.com/projects/bambuconveyor

Original conveyor (Print this first): https://makerworld.com/en/models/148083#profileId-161573

The ESP32 source code: https://github.com/t0nyz0/Bambu-Poop-Conveyor-ESP32

Supplies

Required parts used for this build:

• Breakout board for ESP32: https://amzn.to/4dyjsx0
• ESP32 board: https://amzn.to/4fBjh5L
• 12 Volt power supply: https://amzn.to/3AfIm6a
• Motor Controller: https://amzn.to/4u3dADV 
• 12V 10RPM Motor: https://amzn.to/3M24VOd
• Resistors (I use 470Ω - you need 3 from this kit): https://amzn.to/4cqCi8e
• Wires: https://amzn.to/46EAtn3 
• LED's sourced from this kit: https://amzn.to/4dH5Dw7

Optional parts:

• Motion sensor (For Motion Sensor mode): https://amzn.to/4gtN4gd
• I use these bearings on my conveyor for smoother action: https://amzn.to/4hjW0WD
• Heat shrink tubing: https://amzn.to/40RwRM6 
• Wires: I use these for the motor connections https://amzn.to/4jMV0M6 

Recommended Filament:

• Bambu PETG-HF (Any color) - Main housing
• Bambu PETG-HF (Any color) - Motor connector
• Bambu PETG Translucent (Clear) - LED windows
• Bambu PLA or PETG (White) - LED housing

Note: 

• The 3 circles for the LED's need to be printed in PETG Translucent filament so that the light shines through

Live stream of this print: https://www.youtube.com/watch?v=IniKKC8SukM

Motion Detection Mode (Using IR Sensor)

Electronics Housing

LED Housing

Optional Motion Detector Side Panel for IR Sensor

Change log