HardLabs

Welefant

HaCraFu·assembly-kits·welefant/welefant.kicad_pcb

Welefant PCB layout, top view — open source ESP32 board by HaCraFu

About the Welefant PCB

Welefant is an open source ESP32 PCB design by HaCraFu, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 80 × 90 mm, with 93 components from 44 distinct parts.

Its main chip is the ESP32-S3(FN8), from the ESP32 family. Other key parts include the RT9080-33GJ5, Audio Jack PJ-324, SD18OB261-060, TP4056 and welefant. By type, the board carries 22 LEDs, 22 capacitors, 19 resistors, 7 ICs, 5 switches and 4 diodes.

From the project

HaCraFu e.V. assembly kits

Main components on the Welefant

RT9080-33GJ5Audio Jack PJ-324SD18OB261-060TP4056welefantReset 2V9ESP32-S3(FN8)

Welefant bill of materials (BOM)

93 components, 44 distinct parts.

QtyPartRefs
1
RT9080-33GJ5
RICHTEK(台湾立锜)
U1
1
Audio Jack PJ-324
XKB Connectivity(中国星坤)
U2
1
SD18OB261-060
U3
1
TP4056
TOPPOWER(南京拓微)
U4
1
welefant
U5
1
Reset 2V9
U6
1
ESP32-S3(FN8)
U7
3
AO3401A
AOS
Q1, Q2, Q3
1
40 MHz
X1
1
Conn_02x6_Odd_Even
J2
1
Conn_02x7_Odd_Even
J3
1
Battery
BT1
1
Conn_01x02
BT2
1
Fuse
F1
2
SK6812MINI-E
欧思科光电
LEDH_L1, LEDH_R1
1
ON-OFF
SW1
1
RESET
XKB Connectivity(中国星坤)
SW2
1
BOOT
XKB Connectivity(中国星坤)
SW3
1
GPIO33
XKB Connectivity(中国星坤)
SW4
1
IO34
XKB Connectivity(中国星坤)
SW5
Show 24 more
QtyPartRefs
1
USB-TYPE-C-018
DEALON(德艺隆)
USB1
1
yellow
CLED1
20
SK6812MINI-E
欧思科光电
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +12
1
white
LED21
3
5V6
D1, D2, D3
1
1N5819WS
D4
2
2n2
L1, L2
2
33n
SAMSUNG(三星)
C1, C2
7
10u
SAMSUNG(三星)
C3, C4, C5, C7, C8, C9, C12
3
1u
SAMSUNG(三星)
C6, C13, C25
2
15p
C10, C11
5
100n
YAGEO(国巨)
C15, C16, C21, C23, C24
1
100n
SAMSUNG(三星)
C17
2
3p3
C18, C19
3
10K
UNI-ROYAL(厚声)
R1, R11, R13
2
5.1K
UNI-ROYAL(厚声)
R2, R8
3
1K
UNI-ROYAL(厚声)
R3, R10, R14
2
270
UNI-ROYAL(厚声)
R4, R5
2
150
UNI-ROYAL(厚声)
R6, R7
2
100K
UNI-ROYAL(厚声)
R9, R16
2
330
R12, R20
1
390K
R15
1
3K3
UNI-ROYAL(厚声)
R17
1
0
R18

Welefant design files

The KiCad project lives in the HaCraFu/assembly-kits repository on GitHub; these links point at the commit this page was built from.

Welefant: common questions

What microcontroller does the Welefant use?

The Welefant is built around the ESP32-S3(FN8), from the ESP32 family.

How big is the Welefant PCB?

The Welefant measures 80 × 90 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Welefant?

93 components, from 44 distinct parts. The full bill of materials is listed on this page.

Where can I download the Welefant design files?

From the HaCraFu/assembly-kits repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Welefant design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Welefant 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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