2 layers30 × 110 mm
2 layers80 × 90 mm
Welefant
HaCraFu/assembly-kitsHaCraFu e.V. assembly kits
- Size
- 80 × 90 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 94
- Nets
- 112
- Pads
- 379
- Tracks, vias
- 1,045, 414
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Aug 2022
- Updated
- 20 Jan 2026
Overview
Welefant is an open-source printed circuit board by HaCraFu, from the HaCraFu/assembly-kits repository on GitHub. It is a 2-layer board of 80 × 90 mm with 94 parts on 112 nets, routed with 1,045 tracks and 414 vias.
It is built around the RT9080-33GJ5, SD18OB261-060 and TP4056, with the SK6812MINI-E, AO3401A and 1N5819WS among its other parts. Its parts include 27 diodes, 22 capacitors, 19 resistors, 7 ICs and 5 switches. It belongs with the ESP32 boards of this library.
Main components
7
RT9080-33GJ5
TSOT-23-5-40℃~+125℃@(Tj) 1 2uA 3.3V 360mV@(600mA) 42uVrms 5.5V 600mA 75dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive TSOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSRichtek TechVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SD18OB261-060
SMD-5P,3.5x2.7mm-26dB -40℃~+100℃ 0.98mm 1.8V 2.65mm 3.5mm 390uA~500uA 65dB Omnidirectional Omnidirectional pickup SMD-5P,3.5x2.7mm MEMS Microphones ROHSGoertekMEMS Microphones
TP4056
ESOP-8-40℃~+85℃ 1 1A 35uA 4.2V 4V~6.5V Charging IC Lithium Battery Support Support 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 ESOP-8 Battery Management ROHSUMWBattery Management
SK6812MINI-E
SMD-40℃~+85℃ 0.6mA 1.78mm 120mcd~240mcd 120° 160mcd~320mcd 1kHz 2.8mm 2000V 3.2mm 3.7V~5.5V 460nm~470nm 515nm~525nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Semi-transparent lens SMD RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes
USB-TYPE-C-018
SMD-25℃~+85℃ 1 10000 times 16P 3A 5V 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSDEALONUSB Connectors
README
README.mdHaCraFu assembly kits
Parts
94| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | SK6812MINI-E | hacrafu:SK6812MINI-E-handsolder | LED1, LED2, LED3, LED4, LED5, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20 +6 |
| 7 | 10u | easyeda2kicad:C0603 | C3, C4, C5, C7, C8, C9, C12 |
| 5 | 100n | easyeda2kicad:C0603 | C15, C16, C21, C23, C24 |
| 3 | 10K | easyeda2kicad:R0603 | R1, R11, R13 |
| 3 | 1K | easyeda2kicad:R0603 | R3, R10, R14 |
| 3 | 1u | easyeda2kicad:C0603 | C6, C13, C25 |
| 3 | 5V6 | easyeda2kicad:SOD-882_L1.0-W0.6-BI | D1, D2, D3 |
| 3 | AO3401A | easyeda2kicad:SOT-23_L2.9-W1.3-P1.90-LS2.4-BR | Q1, Q2, Q3 |
| 2 | 100K | easyeda2kicad:R0603 | R9, R16 |
| 2 | 150 | easyeda2kicad:R0603 | R6, R7 |
| 2 | 15p | easyeda2kicad:C0603 | C10, C11 |
| 2 | 270 | easyeda2kicad:R0603 | R4, R5 |
| 2 | 2n2 | easyeda2kicad:L0603 | L1, L2 |
| 2 | 330 | easyeda2kicad:R0603 | R12, R20 |
| 2 | 33n | easyeda2kicad:C0603 | C1, C2 |
| 2 | 3p3 | easyeda2kicad:C0603 | C18, C19 |
| 2 | 5.1K | easyeda2kicad:R0603 | R2, R8 |
| 1 | 0 | easyeda2kicad:R0603 | R18 |
| 1 | 100n | easyeda2kicad:C0402_NEW | C17 |
| 1 | 1N5819WS | Diode_SMD:D_SOD-323 | D4 |
| 1 | 390K | easyeda2kicad:R0603 | R15 |
| 1 | 3K3 | easyeda2kicad:R0603_NEW | R17 |
| 1 | 40 MHz | easyeda2kicad:OSC-SMD_4P-L3.2-W2.5-BL_SIT8008BI | X1 |
| 1 | ANTENNA | hacrafu:antenna | ANT1 |
| 1 | Audio Jack PJ-324 | easyeda2kicad:AUDIO-TH_PJ-32400 | U2 |
| 1 | BOOT | easyeda2kicad:SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2 | SW3 |
| 1 | Battery | hacrafu:LiPo_Recycled_welefant | BT1 |
| 1 | Conn_01x02 | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | BT2 |
| 1 | Conn_02x6_Odd_Even | hacrafu:PinHeader_2x06_P2.54mm_Vertical_SMD_handsolder | J2 |
| 1 | Conn_02x7_Odd_Even | hacrafu:PinHeader_2x07_P2.54mm_Vertical_SMD_handsolder | J3 |
| 1 | ESP32-S3(FN8) | easyeda2kicad:QFN-56_L7.0-W7.0-P0.40-TL-EP4.0 | U7 |
| 1 | Fuse | easyeda2kicad:F0805 | F1 |
| 1 | GPIO33 | easyeda2kicad:SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2 | SW4 |
| 1 | IO34 | easyeda2kicad:SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2 | SW5 |
| 1 | ON-OFF | easyeda2kicad:SW-TH_K3-1296S-E1 | SW1 |
| 1 | RESET | easyeda2kicad:SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2 | SW2 |
| 1 | RT9080-33GJ5 | easyeda2kicad:TSOT-23-5_L2.9-W1.6-P0.95-LS2.8-BL | U1 |
| 1 | Reset 2V9 | easyeda2kicad:SOT-143_L2.9-W1.3-P1.92-LS2.3-BR | U6 |
| 1 | SD18OB261-060 | hacrafu:MIC-SMD_SD18OB261-060 | U3 |
| 1 | TP4056 | easyeda2kicad:ESOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP | U4 |
| 1 | USB-TYPE-C-018 | easyeda2kicad:USB-C_SMD-TYPE-C-31-M-12 | USB1 |
| 1 | welefant | hacrafu:welefant | U5 |
| 1 | white | easyeda2kicad:LED0603-R-RD_WHITE | LED21 |
| 1 | yellow | easyeda2kicad:LED0805-R-RD | CLED1 |
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Questions
How big is the Welefant PCB?
It measures 80 × 90 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Welefant use?
94 parts, built around the RT9080-33GJ5, SD18OB261-060, TP4056 and SK6812MINI-E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Welefant KiCad files?
From the HaCraFu/assembly-kits repository on GitHub, at the commit this page was made from: the board is welefant/welefant.kicad_pcb and its schematic batterypack/batterypack_6_13300.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Welefant design in my own project?
Its repository states no licence, so its author keeps all rights: ask HaCraFu before reusing the design.