HardLabs

Juk2

lysolaka·juk2·juk-pcb/JUK2.kicad_pcb

Juk2 PCB layout, top view — open source ESP32 board by lysolaka

About the Juk2 PCB

Juk2 is an open source ESP32 PCB design by lysolaka, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 90 × 100 mm, with 64 components from 33 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the AMS1117-3.3, CH340N and DRV8825 Module. By type, the board carries 19 capacitors, 18 connectors, 18 resistors, 7 ICs and 2 diodes.

It belongs with the robotics & motion designs in this gallery.

From the project

A CNC plotter (or maybe more) firmware written in Rust.

JUK2 is a CNC plotter firmware for the ESP32-S3 on a custom PCB and plotter frame.

JUK2 is the successor of JUK - a private, messy and ugly project. The project's second version is supposed to be everything the first one was not able to be.

See the file REFERENCE.md for usage information.

The custom design can be found under the juk-pcb directory. It also has a schematic and a STEP model available for those, who don't have KiCad installed.

Juk2, from the project README
From the project README

Main components on the Juk2

AMS1117-3.3ESP32-S3-WROOM-1CH340NDRV8825 Module

Juk2 bill of materials (BOM)

64 components, 33 distinct parts.

QtyPartRefs
1
AMS1117-3.3
U1
1
ESP32-S3-WROOM-1
U2
1
CH340N
U3
4
DRV8825 Module
U4, U5, U6, U7
1
USB_C_Receptacle_USB2.0_16P
J1
1
JTAG
J2
1
24V IN
J3
1
LIMX+
J4
1
LIMX-
J5
1
Indicator LED
J6
1
~{EN_{DRV}} LED
J7
1
X Motor
J8
1
Y Motor
J9
1
LIMY+
J10
1
LIMY-
J11
1
DRV Fan
J12
1
RESET
J13
1
BOOT
J14
2
Z Motor
J15, J16
1
LIMZ+
J17
Show 13 more
QtyPartRefs
1
LIMZ-
J18
1
B5819WS
D1
1
LED
D2
11
100n
C1, C4, C6, C7, C8, C9, C10, C13 +3
1
10u
C2
2
22u
C3, C5
4
100uF
C11, C12, C15, C16
1
1u
C17
2
5,1k
R1, R2
10
10k
R3, R6, R7, R8, R13, R14, R15, R16 +2
2
0
R4, R5
3
270
R9, R10, R11
1
1k
R12

Juk2 design files

The KiCad project lives in the lysolaka/juk2 repository on GitHub; these links point at the commit this page was built from.

Juk2: common questions

What microcontroller does the Juk2 use?

The Juk2 is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Juk2 PCB?

The Juk2 measures 90 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Juk2?

64 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Juk2 design files?

From the lysolaka/juk2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Juk2 design in my own project?

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

Can I test firmware for the Juk2 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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