2 layers45 × 45 mm
2 layers50 × 35 mm
PerpetualClock
CXJ007/LP_ClockLow-power clock
- Size
- 50 × 35 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 93
- Nets
- 74
- Pads
- 323
- Tracks, vias
- 448, 61
- Pours
- 19
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 20 Jun 2024
- Updated
- 30 Sep 2024
Overview
PerpetualClock is an open-source printed circuit board by CXJ007, from the CXJ007/LP_Clock repository on GitHub. It is a 2-layer board of 50 × 35 mm with 93 parts on 74 nets, routed with 448 tracks and 61 vias.
It is built around the BH1750FVI-TR, HTU21D and SW-18010P, with the BQ25504RGT, RX8900CE-NF and TP4057 among its other parts. Its parts include 24 resistors, 21 capacitors, 10 ICs, 5 switches and 4 transistors. It belongs with the STM32 boards of this library.
Main components
9
BH1750FVI-TR
WSOF-6-40℃~+85℃ 2.4V~3.6V 65.535klx I2C Light Intensity WSOF-6 Ambient Light Sensors ROHSROHM SemiconductorAmbient Light Sensors
HTU21D
DFN-6-EP(3x3)-40℃~+125℃ 0%RH~100%RH 1.5V~3.6V 450uA 8bit、12bit、14bit Factory calibration、Built-in temperature and humidity compensation、Built-in heater、Derived quantity calculation I2C ±0.3℃ ±2%RH DFN-6-EP(3x3) Temperature and Humidity Sensor ROHSTE ConnectivityTemperature And Humidity Sensor
SW-18010P
插件-20℃~+80℃ 0.3mm 1,000,000 cycles 12V 20mA 4.5mm Plugin Vibration Sensors ROHSSHOU HANVibration Sensors
BQ25504RGT
VQFN-16-EP(3x3)-40℃~+105℃ 130mV~3V、2.5V~5.25V 300mA 330nA Supercapacitor、Lithium Battery 可编程充电电流、过放保护 VQFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
RX8900CE-NF
SMD3225-10PSMD3225-10P Real Time Clocks ROHSNyfeaReal Time Clocks
TP4057
SOT-23-6-40℃~+85℃ 1 25uA 4.24V 4V~6.5V Charging IC Lithium Battery Not supported SOT-23-6 Battery Management ROHSTECH PUBLICBattery Management
TYPE-C-31-M-12A
SMD-30℃~+85℃ 1 10,000 cycles 16P 20V 6A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
AO3401
SOT-231 P-Channel 1.3V 115pF 30V 350mW 4.2A 75mΩ@4.5V 77pF 954pF P-Channel SOT-23 MOSFETs ROHSGuangdong HottechMOSFETs
Parts
93| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C5, C9, C12, C13, C15, C16, C17, C18, C19, C22 |
| 8 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R3, R14, R15, R16, R17, R22, R24 |
| 8 | ~ | My_Library:TP | TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11 |
| 4 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C1, C6, C10, C11 |
| 4 | 5K | Resistor_SMD:R_0603_1608Metric | R18, R19, R21, R23 |
| 3 | 5M | Resistor_SMD:R_0603_1608Metric | ROC2, RUV1, RUV2 |
| 3 | BSN20_C558103 | My_Library:SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | Q2, Q3, Q4 |
| 3 | SW | My_Library:SW-SMD_L4.7-W3.5-P3.35-EH | SW1, SW2, SW3 |
| 3 | Solar Cell | My_Library:2p_2.54 | J1, J2, J4 |
| 2 | 20K | Resistor_SMD:R_0603_1608Metric | R2, R4 |
| 2 | 22 | Resistor_SMD:R_0603_1608Metric | R10, R11 |
| 2 | 2K | Resistor_SMD:R_0603_1608Metric | R8, R13 |
| 2 | NC | Capacitor_SMD:C_0603_1608Metric | C20, C21 |
| 1 | 0.01uF | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 1.5K | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 100K | Resistor_SMD:R_0603_1608Metric | R20 |
| 1 | 100uF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 104 | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 15M | Resistor_SMD:R_0603_1608Metric | ROC1 |
| 1 | 1N5819 | Diode_SMD:D_SMA | D2 |
| 1 | 2.2uH | My_Library:L2.2uh 2A | L2 |
| 1 | 20uF | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | 22uH | Inductor_SMD:L_Chilisin_BMRx00060630 | L1 |
| 1 | 3.09M | Resistor_SMD:R_0603_1608Metric | ROK1 |
| 1 | 3.32M | Resistor_SMD:R_0603_1608Metric | ROK2 |
| 1 | 3.48M | Resistor_SMD:R_0603_1608Metric | ROK3 |
| 1 | 4.53M | Resistor_SMD:R_0603_1608Metric | ROV1 |
| 1 | 487K | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 5.1 | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 5.1K | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 5.62M | Resistor_SMD:R_0603_1608Metric | ROV2 |
| 1 | 86.6K | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | AO3401 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BAT | My_Library:2p_2.54 | J3 |
| 1 | BH1750FVI-TR | My_Library:WSOF-6_L2.6-W1.6-P0.50-TL-EP | U7 |
| 1 | BQ25504 | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.68x1.68mm | U1 |
| 1 | Buzzer | Buzzer_Beeper:MagneticBuzzer_PUI_AT-0927-TT-6-R | BZ1 |
| 1 | G*** | kibuzzard-666E9566 | kibuzzard-666E9566 |
| 1 | G*** | kibuzzard-666E9537 | kibuzzard-666E9537 |
| 1 | G*** | kibuzzard-666E94AD | kibuzzard-666E94AD |
| 1 | HTU21D | Package_DFN_QFN:DFN-6-1EP_3x3mm_P1mm_EP1.5x2.4mm | U8 |
| 1 | LED | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | MF1286403 | My_Library:MF1286403 | U9 |
| 1 | RTL6150BGQW | Package_SON:WSON-10-1EP_2.5x2.5mm_P0.5mm_EP1.2x2mm | U2 |
| 1 | RX8900CE | Package_SON:EPSON_CE-USON-10_USON-10_3.2x2.5mm_P0.7mm | U10 |
| 1 | STM32L432KCUx | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U6 |
| 1 | SW | My_Library:SW-SMD_L4.0-W2.9-LS5.0 | SW5 |
| 1 | SW-18010P | My_Library:SW-TH_SW-18010P | SW4 |
| 1 | TP4057 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | TYPE-C-31-M-12_母座 | My_Library:typec 12 | U4 |
| 1 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-666 | U5 |
Questions
How big is the PerpetualClock PCB?
It measures 50 × 35 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PerpetualClock use?
93 parts, built around the BH1750FVI-TR, HTU21D, SW-18010P and BQ25504RGT. 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 PerpetualClock KiCad files?
From the CXJ007/LP_Clock repository on GitHub, at the commit this page was made from: the board is Hardware/PerpetualClock.kicad_pcb and its schematic Hardware/MCU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PerpetualClock design in my own project?
Its repository states no licence, so its author keeps all rights: ask CXJ007 before reusing the design.
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