HardLabs

Mini4wdchrono

Pimentoso·mini4wdchrono·resources/kicad/pro_micro_shield/pro_micro_shield.kicad_pcb

Mini4wdchrono PCB layout, top view — open source AVR/Arduino board by Pimentoso

About the Mini4wdchrono PCB

Mini4wdchrono is an open source AVR/Arduino PCB design by Pimentoso, published on GitHub under the MIT license. It is a 2-layer board measuring 34.5 × 45.8 mm, with 5 components from 5 distinct parts.

Its main chip is the ProMicro, from the AVR/Arduino family. By type, the board carries 3 connectors, 1 IC and 1 resistor.

It belongs with the sensors and dev boards & breakouts designs in this gallery.

From the project

Software for Arduino based 3-lane lap timer for Tamiya Mini4wd.

Mini4wdChrono is a free, open-source desktop application for timing and managing Mini 4WD races on three-lane Japan Cup tracks. It combines Arduino-based lap detection with an interface designed for race organizers and large-screen displays.

- Live timing for up to three lanes, including position, gaps, average speed, and split times - Configurable lap counts, timing thresholds, start sequence, sensors, LEDs, and buzzer - Track import from Mini4WD Track Editor - Player and round import from Mini4WD Tournament Generator - Tournament standings, editable results, and free-race support -…

Mini4wdchrono, from the project README
From the project README

Main components on the Mini4wdchrono

ProMicro

Mini4wdchrono bill of materials (BOM)

5 components, 5 distinct parts.

QtyPartRefs
1
ProMicro
U1
1
Conn_01x06_Female
J1
1
Conn_01x12_Female
J2
1
Conn_01x09_Female
J3
1
R
R1

Mini4wdchrono design files

The KiCad project lives in the Pimentoso/mini4wdchrono repository on GitHub; these links point at the commit this page was built from.

Mini4wdchrono: common questions

What microcontroller does the Mini4wdchrono use?

The Mini4wdchrono is built around the ProMicro, from the AVR/Arduino family.

How big is the Mini4wdchrono PCB?

The Mini4wdchrono measures 34.5 × 45.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mini4wdchrono?

5 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mini4wdchrono design files?

From the Pimentoso/mini4wdchrono repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Mini4wdchrono design in my own project?

Yes, under the terms of its MIT license, which Pimentoso chose for the repository.

Can I test firmware for the Mini4wdchrono without the hardware?

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

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