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Measure zero

JBlitzar·measure-zero·PCB/measure_zero/measure_zero.kicad_pcb

Measure zero PCB layout, top view — open source ESP32 board by JBlitzar

About the Measure zero PCB

Measure zero is an open source ESP32 PCB design by JBlitzar, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 300 × 30 mm, with 7 components from 7 distinct parts.

Its main chip is the ESP32-C3FH4, from the ESP32 family.

From the project

An opinionated 300mm PCB ruler.

- mm tick marks - quarter-inch tick marks - Footprints of common parts - Common vias - Angle and rounded corner stencils - Common screw holes (M2, M2.5, M3, M4) - Other holes for tracing (5mm, 8mm, 10mm, 15mm) - A 5mm keychain hole - ENIG finish - Isometric tricolor hexagon design on the back

I just thought that a PCB ruler would be pretty cool. I thought this project would be really simple, but I still learned some interesting things. And I improved my kicad skills, especially regarding graphics manipulation. I learned about "Edit Text and Graphics Properties," which was an absolute life…

Measure zero, from the project README
From the project README

Measure zero bill of materials (BOM)

7 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SW_MEC_5E
6x6mm tactile
1
C_US
0402
1
C_US
0603
1
C_US
0805
1
C_US
1206
1
ESP32-C3FH4
QFN32
1
NE555D
SOIC-8

Measure zero design files

The KiCad project lives in the JBlitzar/measure-zero repository on GitHub; these links point at the commit this page was built from.

Measure zero: common questions

What microcontroller does the Measure zero use?

The Measure zero is built around the ESP32-C3FH4, from the ESP32 family.

How big is the Measure zero PCB?

The Measure zero measures 300 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Measure zero?

7 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Measure zero design files?

From the JBlitzar/measure-zero repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Measure zero design in my own project?

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

Can I test firmware for the Measure zero without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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