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Barman Robotics Arm 3D Printer File Image 1
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Barman Robotics Arm

Tonio1012 avatarTonio1012

February 27, 2026

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DescriptionCommentsTags

Description

 

Boost MeIt's a big project for done with lot of passion !
Thanks for the boost :)

This is a solid foundation for a service robot. Using NEMA motors with planetary gearboxes is a smart move—it gives you that smooth, high-torque motion necessary to avoid spilling drinks (especially when dealing with the inertia of a full cup). Moving to an ESP32-C3 also opens up great possibilities for a web-based interface.

Here is a breakdown of your prototype in English, organized by technical specs and potential use cases.

Technical Specifications

1. Kinematics & Mechanics

  • 3-Axis Configuration: Designed for versatile positioning, allowing the robot to adapt to various container heights, from espresso cups to tall glasses.
  • High-Torque Drive: Utilizes NEMA stepper motors paired with planetary gearboxes. This setup maximizes torque-to-weight ratio, ensuring precise movement even under heavy liquid loads.

2. Fluid Management

  • Dual-Channel System: Features two independent inlets, allowing the robot to serve two different beverages (e.g., water and juice, or coffee and milk) without cross-contamination.
  • Adaptive Serving: The geometry is optimized to handle a wide range of vessel diameters and volumes.

3. Electronics & Control

  • Motor Drivers: TB6600 industrial-grade drivers provide reliable current control and micro-stepping for silent, vibration-free operation.
  • Microcontroller: Powered by the ESP32-C3, enabling compact processing and native Wi-Fi/Bluetooth connectivity for remote operation.
  • A simple Arduino code !

4. Material

  • Lot of screw and nuts (look at the doc)
  • 2x Nema 17 2A
  • 1x Nema 17 1.5A
  • 1x Esp32 c3
  • 3x TB6600 driver motor
  • Lot of cable 
  • Alimentation 12V
  • 2x water pump with 4mm tube 

License:

Standard Digital File License

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