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Tux v02

tux-friend·tux-cube·pcb/v0.2/tux_v02.kicad_pcb

Tux v02 PCB layout, top view — open source ESP32 board by tux-friend
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About the Tux v02 PCB

Tux v02 is an open source ESP32 PCB design by tux-friend, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 25 × 25 mm, with 60 components from 41 distinct parts.

Its main chip is the ESP32-C3, from the ESP32 family. Other key parts include the BQ25504 and SPX3819M5-L-3-3. By type, the board carries 20 capacitors, 17 resistors, 6 connectors, 5 diodes, 3 ICs and 3 inductors.

It belongs with the sensors, power & battery and displays & leds designs in this gallery.

From the project

Physics Sensor Cube Tux³

11.04.23 Idea for own ESP32 PCB Design 15.04.23 First sketches with KiCad 16.04.23 Idea for physics sensor cube Tux³ and first sketches 17.04.23 Design and order of v0.1 PCB 22.04.23 First prototype and proof of concept 23.04.23 Case v0.1 25.04.23 Design and order of v0.2 PCB 25.04.23 Case v0.2 29.04.23 Software v0.1 03.05.23 Arrival of PCB v0.1 + v0.2 10.05.23 Arrival of all parts for PCB, first working ESP32-C3 board 11.05.23 Order of 30 pcs v0.2 PCB on JLCPCB 12.05.23 Forth ESP32-C3 board completed 13.05.23 Case v0.3 14.05.23 First full prototype → case too small 17.05.23 Case v0.4…

Main components on the Tux v02

ESP32-C3BQ25504SPX3819M5-L-3-3

Tux v02 bill of materials (BOM)

60 components, 41 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C3
U1
1
BQ25504
U2
1
SPX3819M5-L-3-3
U3
1
BC847
Q1
1
40 Mhz
Y1
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
1
CONN_02X04_TOP_BOTTOM
Conn_02x04_Top_Bottom
J2
1
CONN_02X04_TOP_BOTTOM
Conn_02x04_Top_Bottom
J3
1
1-0201FBV0T
Conn_01x02
TAD
J4
1
CONN_01X01
Conn_01x01
J5
1
CONN_01X04
Conn_01x04
J6
1
ANT3216LL00R2400A
ANT1
1
SOLDERJUMPER_2_OPEN
SolderJumper_2_Open
JP1
1
B
SW1
1
R
SW2
2
LED
D1, D5
2
1N4148WT
D2, D4
1
WS2812B
D3
2
2 nH
L1, L2
1
BRC2518T220K
22 uH
L3
Show 21 more
QtyPartRefs
2
10 pF
C1, C3
4
1 uF
C2, C10, C13, C20
5
0.1 uF
C4, C5, C9, C11, C18
1
4.7 pF
C6
1
3.3 pF
C7
2
10 nF
C8, C15
3
10 uF
C12, C16, C19
2
4.7 uF
C14, C17
3
10K
R1, R5, R6
1
5K1
10K
R2
1
5K1
5k1
R3
1
1K
R4
1
3.32M
R7
2
4.42M
R8, R14
1
3.83M
R9
2
6.12M
R10, R12
1
5.62M
R11
1
542K
R13
1
5.90M
R15
1
9.76M
R16
1
4K7
R17

Tux v02 design files

The KiCad project lives in the tux-friend/tux-cube repository on GitHub; these links point at the commit this page was built from.

Tux v02: common questions

What microcontroller does the Tux v02 use?

The Tux v02 is built around the ESP32-C3, from the ESP32 family.

How big is the Tux v02 PCB?

The Tux v02 measures 25 × 25 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tux v02?

60 components, from 41 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 Tux v02 design files?

From the tux-friend/tux-cube 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 Tux v02 design in my own project?

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

Can I test firmware for the Tux v02 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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