4 layers35 × 21.5 mm
High voltage module
SirBramble/Loguwu
A slightly modified version of the firmware found in the LogicAnalyzer repository can be found in 03Firmware.
71 parts
4 layers50 × 84 mm
Loguwu
SirBramble/LoguwuA slightly modified version of the firmware found in the LogicAnalyzer repository can be found in 03Firmware.
- Size
- 50 × 84 mm
- Copper layers
- 4
- Thickness
- 1.58 mm
- Parts
- 105
- Nets
- 127
- Pads
- 429
- Tracks, vias
- 2,045, 286
- Pours
- 384
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 May 2025
- Updated
- 3 Aug 2025
Overview
Loguwu is an open-source printed circuit board by SirBramble, from the SirBramble/Loguwu repository on GitHub. It is a 4-layer board of 50 × 84 mm with 105 parts on 127 nets, routed with 2,045 tracks and 286 vias.
It is built around the RP2040, AP2112K-3.3 and SN74LVC1T45DCK, with the USBLC6-2SC6, ECS-120-8-33B2-CKM-TR3 and SK6805E-J among its other parts. Its parts include 39 resistors, 31 capacitors, 11 ICs, 7 connectors and 3 switches. It belongs with the RP2040 boards of this library.
Main components
7
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
SN74LVC1T45DCK
SC-70-6-40℃~+85℃ 1 1 1.65V~5.5V 1.65V~5.5V 420Mbps Bidirectional Level translator Power-off protection、Output enable high-impedance Tri-State SC-70-6 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)ECS-120-8-33B2-CKM-TR3
-CrystalsECS
SK6805E-J
SMD,5.4x5mm-40℃~+85℃ 0.5mA 1.6mm 100mcd~200mcd 100ns 120° 1kHz 2000V 3.7V~5.5V 385mcd~697.5mcd 460nm~470nm 5.4mm 50ns 520nm~535nm 5mm 620nm~625nm 800Kbit/s 80mcd~160mcd 80ns Built-in power-on reset circuit Semi-transparent lens SMD,5.4x5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
SMA-KE-347-H13.5-1.2
SMD1 3GHz 50Ω Board Side Inner hole Offset Pin SMA SMD Coaxial Connectors (RF) ROHSXUNPUCoaxial Connectors (RF)
README
README.mdLoguwu
The loguwu is a logicanalyzer board designed to work with the LogicAnalyzer software.
Pinout
Firmware
A slightly modified version of the firmware found in the LogicAnalyzer repository can be found in 03_Firmware.
Parts
105| Qty | Value | Footprint | References |
|---|---|---|---|
| 29 | 1k | Resistor_SMD:R_0603_1608Metric | R102, R103, R104, R111, R113, R201, R202, R203, R204, R205, R206, R207, R208, R209, R210, R211 +13 |
| 25 | 100nF | Capacitor_SMD:C_0603_1608Metric | C101, C102, C103, C104, C105, C106, C107, C108, C109, C110, C117, C118, C119, C201, C202, C203 +9 |
| 6 | TXU0104PWR | SamacSys_Parts:SOP65P640X120-14N | IC201, IC202, IC203, IC204, IC205, IC206 |
| 5 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H201, H202, H203, H204, H205 |
| 4 | 1u | Capacitor_SMD:C_0603_1608Metric | C111, C112, C113, C114 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R14, R108 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R101, R105 |
| 2 | 27.4 | Resistor_SMD:R_0603_1608Metric | R106, R107 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R109, R110 |
| 2 | 8pF | Capacitor_SMD:C_0603_1608Metric | C115, C116 |
| 1 | 330 | Resistor_SMD:R_0603_1608Metric | R112 |
| 1 | 5V | TestPoint:TestPoint_Pad_3.0x3.0mm | TP103 |
| 1 | 8k2 | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U102 |
| 1 | BOOT | SamacSys_Parts:PTS636SP50SMTRLFS | SW101 |
| 1 | CH1-8 | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Horizontal | J201 |
| 1 | CH17-24 | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Horizontal | J203 |
| 1 | CH9-16 | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Horizontal | J202 |
| 1 | CHAIN_MOUNT | Chain_mount:Chain_mount | J206 |
| 1 | D+ | TestPoint:TestPoint_Pad_3.0x3.0mm | TP101 |
| 1 | D- | TestPoint:TestPoint_Pad_3.0x3.0mm | TP102 |
| 1 | ECS-120-8-33B2-CKM-TR3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y101 |
| 1 | GND | TestPoint:TestPoint_Pad_3.0x3.0mm | TP104 |
| 1 | PWR_3V3 | Diode_SMD:D_0603_1608Metric | DL102 |
| 1 | PWR_5V | Diode_SMD:D_0603_1608Metric | DL101 |
| 1 | RB512S30 | Diode_SMD:D_SOD-523 | D101 |
| 1 | RESET | SamacSys_Parts:PTS636SP50SMTRLFS | SW102 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U101 |
| 1 | SK6805 | LED_custom:SK6805D-EC2018 | D102 |
| 1 | SMA-KE-347-H13.5-1.2 | Connector_Coaxial:SMA_Samtec_SMA-J-P-H-ST-EM1_EdgeMount | J208 |
| 1 | SN74LVC1T45DCK | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U104 |
| 1 | SW_SP3T | Switch footprints:SW_TH_SK_13D01_G030 | SW103 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U103 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J104 |
| 1 | VREF | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J207 |
| 1 | W25Q16JVUXIQ_TR | SamacSys_Parts:SON50P300X200X60-9N | IC101 |
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A slightly modified version of the firmware found in the LogicAnalyzer repository can be found in 03Firmware.
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Questions
How big is the Loguwu PCB?
It measures 50 × 84 mm and has 4 copper layers, 1.58 mm thick.
What parts does the Loguwu use?
105 parts, built around the RP2040, AP2112K-3.3, SN74LVC1T45DCK and USBLC6-2SC6. 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 Loguwu KiCad files?
From the SirBramble/Loguwu repository on GitHub, at the commit this page was made from: the board is 01_Hardware/01_Loguwu/Loguwu.kicad_pcb and its schematic 01_Hardware/01_Loguwu/Loguwu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Loguwu design in my own project?
Its repository states no licence, so its author keeps all rights: ask SirBramble before reusing the design.