START YOUR BUILD

Barman V3
Complete DIY Project

One purchase gives you the complete current package and future updates within the Barman V3 project.

  • Firmware V3.0.17 + web installer
  • STL, 3MF and STEP files
  • Manual, BOM, pinout and wiring diagrams
  • English, German, Polish and Italian UI
20% OFF CURRENT ONE-TIME PRICE
€25.00
€20.00
Buy now on Gumroad ↗ Digital download · Hardware not included
20% discount currently active on Gumroad
✓ Secure checkout and file delivery via Gumroad
ESP32 · 3D PRINTED · OPEN TO BUILD

Build the machine
that runs the party.

Barman V3 detects up to six glasses, moves the pouring arm into position and serves every round with light, sound and a full-colour interface.

Get the complete project · €20 ↗ Explore the package
✓ Ready-to-flash firmware ✓ Complete build files ✓ Free V3 updates
FIRMWARE V3.0.17
Completed red and black Barman V3 with a multicolour top plate and illuminated interface
6smart glass
positions
4operating
modes
Automatic glass detection✦ Precision stepper arm✦ 4-inch TFT interface✦ RGB and sound feedback✦ Four languages
MORE THAN A DISPENSER

Engineered to be built.
Designed to be enjoyed.

This is a complete DIY engineering project for makers who want the satisfaction of building the hardware without having to develop the software, interface and mechanics from scratch.

01
⌁

It knows where the glasses are

Six concealed capacitive sensors detect each glass. Choose automatic serving or confirm every pour with the encoder.

02
↔

Precise motion

A NEMA 17 stepper and calibrated slot positions put the arm exactly where it needs to be. TMC2209 is supported for smooth, quiet movement.

03
▣

A real user interface

The 4-inch display guides operation, calibration and settings in English, German, Polish or Italian.

04
✦

Built for the party

RGB animations, acoustic feedback and two game modes turn the machine into the centre of the table.

05
◎

Four ways to pour

From fast everyday operation to suspense-driven party games, every mode has its own screen guidance and feedback.

Auto-StartGlass detected → pour begins Click-StartYou decide when the round starts Lucky DealEvery dose is a surprise Who Is Unlucky?One glass stays empty
Barman V3 viewed from above, showing the multicolour top plate and six illuminated glass positions
ENCODER = EMERGENCY STOP Press during arm movement or pouring to stop the pump and arm immediately.
YOUR BUILD, YOUR STYLE

Print it.
Wire it.
Make it yours.

Choose your own colours, assemble the enclosure and calibrate each position directly on the machine. The multicolour top plate and screw-assembled arm give the latest build a clean, serviceable finish.

  • 01 Support-free printable enclosure
  • 02 Multicolour top plate included
  • 03 STEP arm files for modification
  • 04 On-screen calibration
SEE IT IN ACTION

Watch Barman V3
run the round.

A real Barman V3 build moves between the detected glasses and serves the complete round while the screen and RGB lighting show every step.

REAL BUILD FOOTAGE · CLICK TO PLAY
ONE DOWNLOAD. THE COMPLETE BUILD.

Everything you need to go
from filament to first pour.

3D

Print files

STL enclosure parts, new multicolour 3MF top plate and editable STEP arm files.

STL · 3MF · STEP
FW

Firmware V3.0.17

Optimised ESP32 firmware and a browser-based installer. No Arduino IDE required.

READY TO FLASH
↯

Wiring documentation

Updated pinout, full wiring diagrams, battery monitor diagram and protection details.

PDF · TXT
☷

Build manual

Assembly guidance, internal reference photographs, calibration and operating instructions.

STEP BY STEP
BOM

Parts list

A complete bill of materials with tested component links, including TMC2209 and passive buzzer.

UPDATED FOR V3.0.17
↑

Future V3 updates

Firmware improvements and corrected project files remain available from your purchase library.

INCLUDED
A SERIOUS WEEKEND PROJECT

The software is ready.
You build the machine.

Barman V3 is intended for makers familiar with 3D printing, soldering and basic low-voltage wiring. The documentation takes you through the complete assembly and calibration process.

Skill levelIntermediate
ControllerESP32 38-pin
Recommended driverTMC2209
Print materialPETG or PLA+
Rear view of Barman V3 showing its power switch, power input, USB port and silicone hose
POWER · USB · HOSE CONNECTIONS
FIRMWARE V3.0.17

Install from your browser.
No coding required.

Connect the ESP32 by USB and use the official web installer in Chrome or Edge. Existing Barman hardware can be updated to V3.0.17 without rebuilding the machine.

✓ Browser-based installation in Chrome or Edge — no Arduino IDE required.
SAFETY

All fun.
Built-in protection.

Firmware V3.0.17 includes software safeguards for pump and arm operation, monitored homing, an emergency stop and diagnostic event logging.

01

Emergency STOP with one press

Pressing the encoder during operation immediately switches off the pump, stops the arm, cancels the active operation and clears the task queue. Pressing it again restarts the device, followed by a new homing cycle.

02

Pump–motion software interlock

The pump can start only when the arm is homed and stationary. While pouring, the firmware continuously monitors the arm position. Any detected movement immediately switches off the pump and activates the emergency STOP.

03

Homing with safety checks

Before operation, the arm finds its zero position using the HOME limit switch. Maximum travel limits, stage timeouts, movement verification and stuck-switch detection protect against homing failures.

04

Controlled return home

When Auto-Home is enabled—and always during games—the arm returns to its home position after the operation. The return is monitored by a timeout and can be interrupted at any moment with the emergency STOP.

BEFORE YOU BUILD

Frequently asked questions

Does the purchase include a finished machine?+

No. This is a digital DIY project containing firmware, 3D-print files, documentation, diagrams and the bill of materials. You source and assemble the hardware.

Do I need to program the ESP32?+

No coding is required. The supplied web installer flashes the prepared firmware directly from a compatible desktop browser.

Can I install V3.0.17 on existing Barman V3 hardware?+

Yes. The update works with the existing hardware configuration. The TMC2209 driver and passive buzzer are supported upgrades rather than requirements for installing the firmware.

Which languages are available?+

The device interface supports English, German, Polish and Italian, selectable directly in the settings.

Are the electronic components included?+

No physical components are shipped. The package includes an updated BOM with links and specifications for the required parts.

Can I sell machines made from this project?+

The project license is intended for personal DIY use. Contact the creator before producing machines for sale or other commercial use.