HardLabs

Cronometro hotwheels

lrrosa·cronometro-hotwheels·cronometro-rasp-pico/kicad/cronometro-rasp-pico.kicad_sch

This repository ships a schematic but no board layout.

About the Cronometro hotwheels PCB

Cronometro hotwheels is an open source RP2040/RP2350 PCB design by lrrosa, published on GitHub under the GPL-3.0 license. It is a board, with 16 components from 16 distinct parts.

Its main chip is the Raspberry Pi Pico, from the RP2040/RP2350 family. By type, the board carries 12 connectors, 2 switches, 1 IC and 1 buzzer.

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

From the project

Cronômetro de 6 raias para pista Hot Wheels: RP2040 e Arduino, simulador Wokwi, diagramas de fiação e esquemas KiCad

Cronômetro de largada e chegada para pista de carrinhos com 6 raias, no Raspberry Pi Pico / RP2040 (testado na compilação com o Pico SDK 1.5.1, o mesmo do projeto Pong).

- Um microswitch na porta que solta os carrinhos marca o t0. - Um sensor infravermelho TCRT5000 no fim de cada raia marca a chegada daquele carro, pela saída digital D0. A escolha do infravermelho em vez do LDR está justificada com números em docs/bom.md — em resumo: a prova de referência teve colocações decididas por 17 ms, e a dispersão de um LDR para outro é dessa mesma ordem. - Seis displays TM1637 mostram a colocação (1…

Main components on the Cronometro hotwheels

Raspberry Pi Pico

Cronometro hotwheels bill of materials (BOM)

16 components, 16 distinct parts.

QtyPartRefs
1
Raspberry Pi Pico
U1
1
TM1637 pista 1
J1
1
TM1637 pista 2
J2
1
TM1637 pista 3
J3
1
TM1637 pista 4
J4
1
TM1637 pista 5
J5
1
TM1637 pista 6
J6
1
TCRT5000 pista 1
J7
1
TCRT5000 pista 2
J8
1
TCRT5000 pista 3
J9
1
TCRT5000 pista 4
J10
1
TCRT5000 pista 5
J11
1
TCRT5000 pista 6
J12
1
Buzzer passivo (opcional)
BZ1
1
Microswitch da porta
SW1
1
Botao TESTE (opcional)
SW2

Cronometro hotwheels design files

The KiCad project lives in the lrrosa/cronometro-hotwheels repository on GitHub; these links point at the commit this page was built from.

Cronometro hotwheels: common questions

What microcontroller does the Cronometro hotwheels use?

The Cronometro hotwheels is built around the Raspberry Pi Pico, from the RP2040/RP2350 family.

How many components are on the Cronometro hotwheels?

16 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cronometro hotwheels design files?

From the lrrosa/cronometro-hotwheels repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Cronometro hotwheels design in my own project?

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

Can I test firmware for the Cronometro hotwheels 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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