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92 parts12GPL-3.0
2 layers113 × 116.5 mm
Pregnancy tester
divquan/embedded-system-designsThis repository contains designs for embedded systems, including schematics, PCB layouts, and fabrication files. Ideal for learning and project inspiration.
- Size
- 113 × 116.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 82
- Pads
- 310
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 15 Jun 2024
- Updated
- 21 Jun 2024
Overview
Pregnancy tester is an open-source printed circuit board by divquan, from the divquan/embedded-system-designs repository on GitHub, published under the MIT licence. It is a 2-layer board of 113 × 116.5 mm with 52 parts on 82 nets.
It is built around the CP2104EK, ESP32-WROOM-32D and APDS-9251-001, with the LM1117MP-3.3, USBLC6-2P6 and BC817 among its other parts. Its parts include 16 resistors, 13 capacitors, 5 ICs, 4 diodes and 2 transistors. It belongs with the ESP32 boards of this library.
Main components
8CP2104EK
-- USB Conversion Modules ROHSSilicon LabsUSB Conversion Modules
ESP32-WROOM-32D
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
APDS-9251-001
DFN-8(2x2)-40℃~+85℃ 1.7V~3.6V Low power/sleep mode、Spectral correction/filtering、Adjustable gain control、Interrupt/event trigger、Built-in temperature compensation DFN-8(2x2) Ambient Light Sensors ROHSBroadcom LimitedAmbient Light Sensors
LM1117MP-3.3
SOT-2230℃~+125℃@(Ta) 1 1.2V@(800mA) 15V 3.3V 5mA 75dB@(120Hz) 800mA 99uVrms Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
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)
BC817
SOT-231 NPN 100nA 150MHz 300mW 40 45V 500mA 5V 700mV NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)
LL4148
LL-341 Independent 1V@10mA 200mA 4A 4ns 500mW 5uA@75V 75V LL-34 Switching Diodes ROHSMDDSwitching Diodes
UMH3N
SOT-363-55℃~+150℃ 0.5uA 100 100mA 150mW 2 NPN (Pre-Biased) 250MHz 300mV 50V 5V 6.11kΩ NPN SOT-363 Digital Transistors ROHSJiangsu Changjing Electronics Technology (CJ)Digital Transistors
README
README.mdembedded-system-designs
This repository contains designs for embedded systems, including schematics, PCB layouts, and fabrication files. Ideal for learning and project inspiration.
Embedded Systems Design Repository
Welcome to the Embedded Systems Design Repository! This repository contains a comprehensive collection of designs for various embedded systems, including detailed schematics, layouts, and printed circuit board (PCB) designs. Whether you're a beginner looking to learn more about embedded systems or an experienced developer seeking inspiration and reference designs, this repository has something for you.
Repository Contents
-
Schematics
- Detailed circuit diagrams for different embedded systems projects.
- Includes component lists, connection details, and annotations to facilitate easy understanding and replication.
-
PCB Layouts
- High-quality PCB layouts ready for fabrication.
- Gerber files, drill files, and board outlines provided for each project.
- Layered designs with clear routing paths, power planes, and signal integrity considerations.
-
Project Documentation
- Comprehensive documentation for each project, including design goals, system architecture, and implementation details.
- Step-by-step guides on assembling and testing the embedded systems.
- Troubleshooting tips and common issues faced during the development process.
-
Component Libraries
- Custom component libraries for popular PCB design software (e.g., Eagle, KiCad).
- Includes footprints, 3D models, and symbol libraries for easy integration into your designs.
-
Example Projects
- A variety of example projects demonstrating different aspects of embedded systems design.
- Projects range from simple microcontroller-based designs to complex multi-component systems.
- Examples include IoT devices, sensor networks, robotics controllers, and more.
-
Design Resources
- Links to useful resources, such as datasheets, application notes, and design guidelines.
- Tutorials and educational material to help you get started with embedded systems design.
How to Use
- Browse the Projects: Explore the various projects listed in the repository. Each project folder contains all necessary files and documentation.
- Clone the Repository: Use
git cloneto download the repository to your local machine. - Open and Modify Designs: Use your preferred PCB design software to open and modify the schematics and PCB layouts.
- Fabricate and Assemble: Use the provided Gerber files to fabricate your PCBs. Follow the assembly guides to build and test your embedded systems.
- Contribute: Feel free to contribute to the repository by adding your own designs, improving existing ones, or providing feedback and suggestions.
We hope this repository serves as a valuable resource for your embedded systems design projects. Happy designing!
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 10k | Resistor_SMD:R_01005_0402Metric_Pad0.57x0.30mm_HandSolder | R17, R18, R19, R20, R21, R22, R28, R29, R30, R31, R32 |
| 6 | 22u | Capacitor_SMD:C_01005_0402Metric_Pad0.57x0.30mm_HandSolder | C14, C18, C21, C23, C24, C26 |
| 5 | 100n | Capacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C15, C19, C20, C22, C25 |
| 5 | 4K7 | Resistor_SMD:R_01005_0402Metric_Pad0.57x0.30mm_HandSolder | R23, R24, R25, R26, R27 |
| 4 | Hole_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H5, H6, H7, H8 |
| 2 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D5, D7 |
| 1 | 4u7 | Capacitor_SMD:C_01005_0402Metric_Pad0.57x0.30mm_HandSolder | C17 |
| 1 | 4u7 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C16 |
| 1 | APDS-9251-001 | OptoDevice:Broadcom_LGA-8_2x2mm_P0.5mm | U9 |
| 1 | BC817 | Package_TO_SOT_SMD:SOT-23 | Q4 |
| 1 | CP2104 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U7 |
| 1 | ESP32-WROOM-32D | RF_Module:ESP32-WROOM-32D | U8 |
| 1 | FerriteBead | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB2 |
| 1 | LED_RGBA | LED_SMD:LED_RGB_Wuerth-PLCC4_3.2x2.8mm_150141M173100 | D8 |
| 1 | LL4148 | Diode_SMD:D_MiniMELF_Handsoldering | D6 |
| 1 | LM1117MP-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U10 |
| 1 | Polyfuse | Fuse:Fuse_Bourns_MF-RG500 | F2 |
| 1 | R_Potentiometer | Potentiometer_SMD:Potentiometer_ACP_CA14-VSMD_Vertical_Hole | RV2 |
| 1 | Relay_SPDT | Relay_THT:Relay_SPDT_Schrack-RT1-16A-FormC_RM5mm | K2 |
| 1 | SW_SPST | Button_Switch_THT:SW_PUSH_1P1T_6x3.5mm_H4.3_APEM_MJTP1243 | SW2 |
| 1 | Screw_Terminal_01x03 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PTSM-0,5-3-2.5-V-THR_1x03_P2.50mm_Vertical | J4 |
| 1 | UMH3N | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q3 |
| 1 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-666 | U6 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J3 |
| 1 | WC1602A | Display:WC1602A | DS2 |
Questions
How big is the Pregnancy tester PCB?
It measures 113 × 116.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pregnancy tester use?
52 parts, built around the CP2104EK, ESP32-WROOM-32D, APDS-9251-001 and LM1117MP-3.3. 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 Pregnancy tester KiCad files?
From the divquan/embedded-system-designs repository on GitHub, at the commit this page was made from: the board is pregnancy-tester/pregnancy-tester/pregnancy-tester.kicad_pcb and its schematic pregnancy-tester/pregnancy-tester/backup.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pregnancy tester design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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