HardLabs

Galvo

breqdev·galvo·board/ESP32 Galvo Driver.kicad_pcb

Galvo PCB layout, top view — open source ESP32 board by breqdev
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About the Galvo PCB

Galvo is an open source ESP32 PCB design by breqdev, published on GitHub. It is a 2-layer board measuring 200 × 50 mm, with 84 components from 50 distinct parts.

Its main chip is the ESP32-S2-SOLO, from the ESP32 family. Other key parts include the CP2102N-Axx-xQFN28, TL084 and MCP4922-ESL. By type, the board carries 35 resistors, 19 connectors, 11 capacitors, 5 ICs, 4 transistors and 4 diodes.

From the project

- KiCAD Board Layout Files - Bill of Materials - Firmware -- you'll need to have the Espressif toolchain installed to compile this - CAD files (SketchUp source files and STL)

- KiCAD Board Layout Files - Bill of Materials - Firmware -- you'll need to have the Espressif toolchain installed to compile this - CAD files (SketchUp source files and STL)

Stuff not covered in the Bill of Materials:

- RGB laser module and driver - Galvos with XY mount, driver, and power supply - Laser safety goggles

Galvo, from the project README
From the project README

Main components on the Galvo

ESP32-S2-SOLOCP2102N-Axx-xQFN28TL084MCP4922-ESL

Galvo bill of materials (BOM)

84 components, 50 distinct parts.

QtyPartRefs
1
ESP32-S2-SOLO
U1
1
CP2102N-Axx-xQFN28
U2
1
TL084
U3
1
~
U4
1
MCP4922-ESL
U5
3
NPN
Q1, Q2, Q4
1
AO3401A
Q3
1
15V Power In
J1
1
RED
J2
1
GREEN
J3
1
BLUE
J4
1
Native USB
J5
1
Galvo X Output
J6
1
Galvo Y Output
J7
1
Debug USB
J8
1
IEC_60320_C14_Receptacle
J9
1
15V Supply In
J10
1
AudioJack3_SwitchTR
J11
1
LASER_EN
J12
1
FAN
J13
Show 30 more
QtyPartRefs
1
Laser Key
J14
1
Conn_01x05
J15
1
Quiic 1
J16
1
Quiic 2
J17
1
Wii 1
P1
1
Wii 2
P2
1
Fuse
F1
1
IRM-05-12
PS1
1
1k
RV3
1
BOOT
SW1
1
RESET
SW2
4
10V
D1, D2, D3, D4
1
3.3uH
L1
5
10uF
C1, C4, C7, C8, C10
4
0.1uF
C2, C3, C9, C11
1
100nF
C5
1
47uF
C6
4
1K
R1, R14, R21, R25
9
10k
R2, R3, R11, R18, R23, R32, R33, R34 +1
2
470
R4, R5
1
22.1k
R6
1
47.5k
R7
4
150k
R8, R12, R15, R20
4
12k
R9, R13, R17, R19
2
9.1k
R10, R16
1
33.2k
R22
1
2.2k
R24
4
5.1k
R26, R27, R28, R29
1
100k
R30
1
27k
R31

Galvo design files

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

Galvo: common questions

What microcontroller does the Galvo use?

The Galvo is built around the ESP32-S2-SOLO, from the ESP32 family.

How big is the Galvo PCB?

The Galvo measures 200 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Galvo?

84 components, from 50 distinct parts. The full bill of materials is listed on this page.

Where can I download the Galvo design files?

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

Can I use the Galvo design in my own project?

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

Can I test firmware for the Galvo 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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