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2 layers86.8 × 78 mmPcb uno, the printed circuit board in 3D

Velocimetro Digital para a minha bicicleta

Size
86.8 × 78 mm
Copper layers
2
Thickness
1.6 mm
Parts
9
Nets
33
Pads
56
Tracks, vias
76, 0
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
5 Mar 2025
Updated
25 Mar 2025

Overview

Pcb uno is an open-source printed circuit board by pab-h, from the pab-h/dolphin repository on GitHub, published under the MIT licence. It is a 2-layer board of 86.8 × 78 mm with 9 parts on 33 nets, routed with 76 tracks and 0 vias.

It is built around the ARDUINO UNO R3. Its parts include 3 ICs, 2 resistors and 2 switches. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

1

README

README.md

Dolphin

Velocimetro Digital para a minha bicicleta. Não cheguei a construí-lo por falta de material. Mas, quem quiser tentar, sinta-se livre. =)

Simulação

Para simular, foi utilizado o Proteus 8

Requisitos

  • Medir a velocidade em Km/h;
  • Medir a distância percorrida;
  • Reiniciar a medida da velocidade (em caso de parada);
  • Reiniciar a distância percorrida;
  • Configurar o raio via software

Materiais

Multifunções nos botões

  • Caso o botão esquerdo for pressionado por pelo menos 1 segundos, o sistema entra em modo de configuração. Se pressionado novamente por 1 segundos, o estado é revertido; Modo de configuração

  • No modo de configuração, é possível configurar o raio da roda. Botão esquerdo aumenta ao valor e o direito decrementa o valor; Saída do modo de configuração

  • Se o botão direito for pressionado sem estar no estado de configuração, o hodometro é resetado;

Esquema Elétrico e PCB

Esquema elétrico Placa de Circuito Impresso

Para a produção dessas imagens, foi-se utilizado o software KiCad

Pessoalmente,

Eu gostei muito de descobrir o PlatformIo. Minhas sinceras felicidades para os mantenedores desse projeto. Além disso, desenvolver a implementação de um botão multifunções foi devidamente interessante. Claro, isso foi uma bela surpresa para mim. Percebi que uma abordagem orientada a eventos e a objetos foi uma descoberta no desenvolvimento desse projeto.

Parts

9
QtyValueFootprintReferences
210KResistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_HorizontalR1, R2
2SW_PushButton_Switch_THT:SW_PUSH_6mmSW1, SW2
2TM1637 Display Modulelibrary:TM1637 Display ModuleU2, U3
1Arduino_UNO_R3Module:Arduino_UNO_R3A1
1KY-024library:KY-024U1
1LOGOLOGOG***

Questions

How big is the Pcb uno PCB?

It measures 86.8 × 78 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Pcb uno use?

9 parts, built around the ARDUINO UNO R3. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Pcb uno KiCad files?

From the pab-h/dolphin repository on GitHub, at the commit this page was made from: the board is hardware/pcb-uno/pcb-uno.kicad_pcb and its schematic hardware/pcb-uno/pcb-uno.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Pcb uno design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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