HardLabs

0.4

Pierini-Franco·Z.E.R._Esquemas-PCB-Modelaje3D·Archivos KiCad/0.4/0.4.kicad_pcb

0.4 PCB layout, top view — open source ESP32 board by Pierini-Franco

About the 0.4 PCB

0.4 is an open source ESP32 PCB design by Pierini-Franco, published on GitHub. It is a 2-layer board measuring 66.7 × 78 mm, with 39 components from 17 distinct parts.

Its main chip is the ESP32_DevKit_V1_DOIT, from the ESP32 family. Other key parts include the PC817. By type, the board carries 12 resistors, 6 diodes, 5 ICs, 5 connectors, 4 transistors and 4 relays.

Main components on the 0.4

PC817ESP32_DevKit_V1_DOIT

0.4 bill of materials (BOM)

39 components, 17 distinct parts.

QtyPartRefs
4
PC817
U1, U2, U4, U5
1
ESP32_DevKit_V1_DOIT
U3
4
S8050
Q1, Q2, Q3, Q4
1
Relay1
J1
1
Relay2
J2
1
Relay3
J3
1
Relay4
J4
1
Entrada 5V
J6
4
G5V-1
K1, K2, K3, K4
1
SW_Push
SW1
1
VAL**
hole_3mm
4
D_Shockley
D1, D3, D5, D8
2
LED
D2, D7
1
C
C1
8
1k
R1, R2, R4, R5, R6, R8, R9, R10
2
4,7k
R3, R11
2
220
R7, R12

0.4 design files

The KiCad project lives in the Pierini-Franco/Z.E.R._Esquemas-PCB-Modelaje3D repository on GitHub; these links point at the commit this page was built from.

0.4: common questions

What microcontroller does the 0.4 use?

The 0.4 is built around the ESP32_DevKit_V1_DOIT, from the ESP32 family.

How big is the 0.4 PCB?

The 0.4 measures 66.7 × 78 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 0.4?

39 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the 0.4 design files?

From the Pierini-Franco/Z.E.R._Esquemas-PCB-Modelaje3D repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the 0.4 design in my own project?

The repository has no license, so all rights stay with Pierini-Franco. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the 0.4 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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