HardLabs

Laser Controller

Andre1Becker·GalvOS·hardware/schematics/Laser Controller.kicad_pcb

Laser Controller PCB layout, top view — open source ESP32 board by Andre1Becker
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About the Laser Controller PCB

Laser Controller is an open source ESP32 PCB design by Andre1Becker, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 175 × 117.8 mm, with 79 components from 40 distinct parts.

Its main chip is the ESP32-S3-N16R8-DevKit, from the ESP32 family. Other key parts include the DAC8562SDGST, TTL_RGB Blue, TTL_RGB Red, TTL_RGB Green and DS18B20. By type, the board carries 30 resistors, 15 ICs, 8 capacitors, 7 connectors, 2 diodes and 2 inductors.

It belongs with the iot & wireless and sensors designs in this gallery.

From the project

Open-source ESP32-S3 laser show controller — built to replace proprietary OEM controllers in RGB galvo laser projectors

This is a BETA Project ATM. You have been warned. Especially the hardware design and schematics are - let's say - creatively cobbled together. If you know how to improve them, feel free to open a pull request!

GalvOS replaces the original control board of an RGB galvo laser projector (specifically the Mikoy 5W) with an ESP32-S3-based system. The result is a firmware platform that is more capable, fully open, and frankly more fun to work with than whatever the OEM shipped.

Laser Controller, from the project README
From the project README

Main components on the Laser Controller

ESP32-S3-N16R8-DevKitDAC8562SDGSTTTL_RGB BlueTTL_RGB RedTTL_RGB GreenDS18B20OPA4134UA_2K5Galvo Output6N137

Laser Controller bill of materials (BOM)

79 components, 40 distinct parts.

QtyPartRefs
1
ESP32-S3-N16R8-DevKit
U1
1
DAC8562SDGST
U2
1
TTL_RGB Blue
U3
1
TTL_RGB Red
U4
1
TTL_RGB Green
U5
5
DS18B20
U6, U7, U8, U9, U10
1
OPA4134UA_2K5
U12
1
Galvo Output
U13
3
6N137
U15, U16, U17
1
SD Card Module (6-pin, 2.54mm)
J1
1
PWR IN +5V
J2
1
PWR IN Galvo
J3
1
FAN1 PWR IN
J4
1
FAN1
J5
1
FAN2 PWR IN
J6
1
FAN2
J7
1
10uF
C_ANA1
2
100nF
C_ANA2, C_WD1
2
10uF
C_IN1, C_IN2
2
22uF
C_OUT1, C_OUT2
Show 20 more
QtyPartRefs
1
SSR1 CTRL
J_SSR1
1
63.4k 1%
R_EN1
1
10k 1%
R_EN2
1
100k 1%
R_FB1
1
24.9k 1%
R_FB2
1
910k 1%
R_WD1
2
0
X_Knoten1, Y_Knoten1
1
1N5819
D1
1
1N5822
D2
1
BLM18PG221SN1
FB1
1
6.8uH
L1
6
100nF
C1, C2, C5, C6, C7, C8
2
1nF
C3, C4
3
220
R1, R2, R4
8
10k
R3, R7, R10, R14, R15, R27, R28, R29
3
4.7k
R5, R30, R31
4
100
R6, R11, R13, R16
5
22k
R8, R9, R12, R17, R25
6
1k
R18, R19, R20, R21, R22, R23
1
0
R26

Laser Controller design files

The KiCad project lives in the Andre1Becker/GalvOS repository on GitHub; these links point at the commit this page was built from.

Laser Controller: common questions

What microcontroller does the Laser Controller use?

The Laser Controller is built around the ESP32-S3-N16R8-DevKit, from the ESP32 family.

How big is the Laser Controller PCB?

The Laser Controller measures 175 × 117.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Laser Controller?

79 components, from 40 distinct parts. The full bill of materials is listed on this page.

Where can I download the Laser Controller design files?

From the Andre1Becker/GalvOS repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Laser Controller design in my own project?

Yes, under the terms of its GPL-3.0 license, which Andre1Becker chose for the repository.

Can I test firmware for the Laser Controller 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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