SweetSafe

Eduardo-Barreto·SweetSafe·kicad/SweetSafe.kicad_pcb

About the SweetSafe PCB

SweetSafe is an open source RP2040/RP2350 PCB design by Eduardo-Barreto, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 76.2 × 81.3 mm, with 8 components from 7 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. By type, the board carries 3 resistors, 1 IC, 1 transistor, 1 connector, 1 buzzer and 1 switch.

From the project

Seu cofre favorito (o que tem os doces)

Este repositório contém os arquivos do esquemático e da PCB do projeto SweetSafe, um "cofre" de doces com Raspberry Pi Pico. Inclui uma descrição dos componentes utilizados e instruções para montagem.

O funcionamento do SweetSafe é simples: a Raspberry Pi Pico controla um eletroímã que mantém a caixa de doces fechada. Quando um pagamento é realizado com sucesso, a Raspberry Pi Pico desativa o eletroímã, permitindo que a caixa seja aberta. Neste momento, LEDs indicam visualmente que a caixa está destravada, enquanto um buzzer emite um som indicando o sucesso da transação. Caso haja uma…

SweetSafe, from the project README — From the project README

Main components on the SweetSafe

Pico

SweetSafe bill of materials (BOM)

8 components, 7 distinct parts.

Qty	Part	Footprint	Refs
1	Pico	RPi_Pico_SMD_TH	U1
1	BC337	TO-92_Inline_Wide	Q1
1	Barrel_Jack	BarrelJack_Horizontal	J1
1	Buzzer	Buzzer_15x7.5RM7.6	BZ1
1	SW_DPDT_x2	SW_MS0850502F030P1A	SW1
2	220	R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal	R1, R2
1	10k	R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal	R3

SweetSafe design files

The KiCad project lives in the Eduardo-Barreto/SweetSafe repository on GitHub; these links point at the commit this page was built from.

Layoutkicad/SweetSafe.kicad_pcb
Schematickicad/SweetSafe.kicad_sch

SweetSafe: common questions

What microcontroller does the SweetSafe use?

The SweetSafe is built around the Pico, from the RP2040/RP2350 family.

How big is the SweetSafe PCB?

The SweetSafe measures 76.2 × 81.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SweetSafe?

8 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the SweetSafe design files?

From the Eduardo-Barreto/SweetSafe repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the SweetSafe design in my own project?

Yes, under the terms of its GPL-3.0 license, which Eduardo-Barreto chose for the repository.

Can I test firmware for the SweetSafe 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.