4 layers69.8 × 98.5 mm
Headset orga
Orlandogani/pers-esp32-headset
This project was made by kicad 10.0. My first personal headset to support my several research in audio or embedded fields
136 parts
4 layers43 × 40 mm
Clock box
betz-engineering/clock_boxA handy clock-generator for the FPGA lab.
- Size
- 43 × 40 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 95
- Nets
- 73
- Pads
- 323
- Tracks, vias
- 523, 191
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 29 Mar 2026
- Updated
- 15 May 2026
Overview
Clock box is an open-source printed circuit board by betz-engineering, from the betz-engineering/clock_box repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board of 43 × 40 mm with 95 parts on 73 nets, routed with 523 tracks and 191 vias.
It is built around the CH32V203G6U6, LMX2572RHA and LP5907MFX-3.0, with the SPX3819M5-L, USBLC6-2SC6 and HYCW07-SMAW1163-1650B among its other parts. Its parts include 39 capacitors, 29 resistors, 6 ICs, 4 connectors and 3 switches. It belongs with the lEDs and displays boards and the RISC-V boards of this library.
Main components
12
CH32V203G6U6
QFN28X4Others QFN28X4 Microcontrollers (MCU/MPU/SOC) ROHSWCH (Nanjing Qinheng Microelectronics)Microcontrollers (MCU/MPU/SOC)
LMX2572RHA
QFN40Low power wideband RF synthesizer with phase synchronization and JESD204B supportTexas InstrumentsUncategorised
LP5907MFX-3.0
SOT-23-5-40℃~+125℃@(Tj) 1 120mV@(250mA) 12uA 250mA 3V 5.5V 6.5uVrms 82dB@(1kHz) Fixed Over Temperature Protection、Enable、Short Circuit Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSPX3819M5-L
SOT-23-5SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMaxLinearVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
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)
HYCW07-SMAW1163-1650B
插件-55℃~+155℃ 1 11mm 5.2mm 50Ω 6GHz Board Side Inner Bore SMA 插件 Coaxial Connectors (RF) ROHSHOAUCCoaxial Connectors (RF)
END4263D-32M
SMD2016-4PSMD2016-4P Temperature Compensated Crystal Oscillators (TCXO) ROHSNDKTemperature Compensated Crystal Oscillators (TCXO)
KT-0805G
0805-40℃~+85℃ 100mW 120° 2.6V~3.1V 430mcd 513nm~528nm 525nm 5mA Discrete Diode Emerald Green Water Clear 0805 LED Indication - Discrete ROHSHubei KENTO ElecLED Indication - Discrete
QS-302-AGS8P
SMDRotary Wheel SwitchesXUNPU
SIQ-02FVS3
SMD500uA 5V Incremental Straight SMD Rotary Encoders ROHSMitsumi ElectricRotary Encoders
TS24CA
SMD,4.6x1.8mm-20℃~+70℃ 1.6N 1.9mm 12V 20 thousand cycles 3.5mm 4.7mm 50mA Black No Rectangular Button SMD(SMT) Tab SPST Surface Mount, Right Angle Without Bracket SMD,4.6x1.8mm Tactile Switches ROHSSHOU HANTactile Switches
TYPE-C-31-M-12
SMD-30℃~+80℃ 1 10,000 cycles 16P 20V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
README
README.mdclock_box
KiCad PCB design for the clock_box: A low cost, versatile signal generator for usage in the digital electronics lab.
See also clock_box description.
Parts
95| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R20, R24, R27 |
| 15 | 1u | Capacitor_SMD:C_0402_1005Metric | C9, C10, C11, C12, C14, C17, C19, C20, C21, C22, C28, C33, C34, C36, C37 |
| 7 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C23 |
| 7 | 10n | Capacitor_SMD:C_0402_1005Metric | C7, C8, C13, C15, C16, C18, C29 |
| 7 | 600R | Inductor_SMD:L_0603_1608Metric | FB1, FB2, FB3, FB4, FB5, FB6, FB7 |
| 5 | 10u | Capacitor_SMD:C_1206_3216Metric | C25, C31, C32, C35, C38 |
| 4 | 0R | Resistor_SMD:R_0402_1005Metric | R14, R15, R17, R23 |
| 2 | 220n | Capacitor_SMD:C_0402_1005Metric | C24, C39 |
| 2 | 3k3 | Resistor_SMD:R_0402_1005Metric | R19, R21 |
| 2 | 49R9 | Resistor_SMD:R_0402_1005Metric | R13, R16 |
| 2 | 5k1 | Resistor_SMD:R_0402_1005Metric | R25, R26 |
| 2 | HYCW07-SMAW1163-1650B | footprints:HYCW07-SMAW1163-1650B | J1, J2 |
| 2 | LOGO | LOGO | G***, G1 |
| 2 | M2 | MountingHole:MountingHole_2.2mm_M2 | H1, H2 |
| 1 | 10R | Resistor_SMD:R_0402_1005Metric | R18 |
| 1 | 150n | Capacitor_SMD:C_0402_1005Metric | C26 |
| 1 | 18k | Resistor_SMD:R_0603_1608Metric | R28 |
| 1 | 1n5 | Capacitor_SMD:C_0402_1005Metric | C27 |
| 1 | 30k | Resistor_SMD:R_0603_1608Metric | R29 |
| 1 | 330R | Resistor_SMD:R_0402_1005Metric | R22 |
| 1 | 3n3 | Capacitor_SMD:C_0402_1005Metric | C30 |
| 1 | CH32V203G6U6 | Package_DFN_QFN:WQFN-28-1EP_4x4mm_P0.4mm_EP2.7x2.7mm | U5 |
| 1 | END4263D-32M | footprints:NT2016SF | Y1 |
| 1 | KT-0805G | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | LMX2572 | Package_DFN_QFN:VQFN-40-1EP_6x6mm_P0.5mm_EP3.5x3.5mm | U3 |
| 1 | LP5907MFX-3.0 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | OLED | footprints:OLED_0.91 | U1 |
| 1 | OSHW-Logo2_9.8x8mm_SilkScreen | Symbol:OSHW-Logo2_9.8x8mm_SilkScreen | G2 |
| 1 | QS-302-AGS8P | footprints:QS-302-AGS8P | SW1 |
| 1 | SIQ-02FVS3 | footprints:SIQ-02FVS3 | SW2 |
| 1 | SPX3819M5-L | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | SWDEBUG | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | TS24CA | footprints:TS24CA | SW3 |
| 1 | TYPE-C-31-M-12 | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J3 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
Questions
How big is the Clock box PCB?
It measures 43 × 40 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Clock box use?
95 parts, built around the CH32V203G6U6, LMX2572RHA, LP5907MFX-3.0 and SPX3819M5-L. 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 Clock box KiCad files?
From the betz-engineering/clock_box repository on GitHub, at the commit this page was made from: the board is clock_box.kicad_pcb and its schematic UI.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Clock box design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 4 layers39.3 × 29 mm
- 4 layers100 × 100 mm
MWGEN G1
MR-DOS/MWGEN-G1
12.5 MHz - 6400 MHz (LMX2572) or even up to 20 GHz (LMX2595) generator board with int./ext. reference.
373 parts18GPL-3.0 - 2 layers255.8 × 122.5 mm
- 2 layers17.8 × 21.2 mm
- 4 layers72 × 81 mm
- 4 layers120 × 88 mm
- 4 layers38 × 28 mm
