HardLabs

Coffee-Guard

ralfomat·BrewGuard·BrewGuard PCB/CoffeGuard Mainboard/Coffee-Guard PCB.kicad_pcb

Coffee-Guard PCB layout, top view — open source RP2040/RP2350 board by ralfomat

About the Coffee-Guard PCB

Coffee-Guard is an open source RP2040/RP2350 PCB design by ralfomat, published on GitHub. It is a 2-layer board measuring 59.9 × 69.9 mm, with 9 components from 9 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. By type, the board carries 4 connectors, 1 IC, 1 transistor, 1 relay, 1 diode and 1 resistor.

It belongs with the displays & leds designs in this gallery.

From the project

BrewGuard: Smart Coffee Machine Management System

BrewGuard is a Smart Coffee Access & Analytics System. A solution that transforms regular coffee machines into smart, trackable brewing stations using RFID authentication and real-time monitoring. This system combines hardware and software components to manage coffee machine access and track usage.

- RFID-based authentication system for secure coffee machine access - User permission management and access tracking - Support for multiple RFID tags and users - User based tracking of coffee consumption

Coffee-Guard, from the project README
From the project README

Main components on the Coffee-Guard

Pico

Coffee-Guard bill of materials (BOM)

9 components, 9 distinct parts.

QtyPartRefs
1
Pico
U1
1
BC847
Q1
1
SSD1306
J1
1
RFID-RC522
J2
1
Relay Output
J3
1
Tasterplatine
J4
1
SANYOU_SRD_Form_C
K1
1
D
D1
1
1000R
R1

Coffee-Guard design files

The KiCad project lives in the ralfomat/BrewGuard repository on GitHub; these links point at the commit this page was built from.

Coffee-Guard: common questions

What microcontroller does the Coffee-Guard use?

The Coffee-Guard is built around the Pico, from the RP2040/RP2350 family.

How big is the Coffee-Guard PCB?

The Coffee-Guard measures 59.9 × 69.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Coffee-Guard?

9 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Coffee-Guard design files?

From the ralfomat/BrewGuard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Coffee-Guard design in my own project?

The repository has no license, so all rights stay with ralfomat. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Coffee-Guard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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