Seeed Studio XIAO Expansion Board is a powerful functional expansion board for Seeed Studio XIAO series of only half Raspberry Pi 4 size. It enables building prototypes and projects in an easy and quick way. With its rich peripherals, you could explore the infinite possibilities of Seeed Studio XIAO series. Circuit python is also well supported by this board.

Welcome to your new project. Imagine what you can build here.

Welcome to your new project. Imagine what you can build here.

LED Driver IC 16 Output Linear PWM Dimming 25mA 5.5V 28-TSSOP PCA9685PW,118 is a 16-channel, 12-bit PWM LED controller with an I²C interface designed for LED dimming, RGB/RGBA lighting, and servo motor control applications. It provides independent PWM control for up to 16 outputs, allowing precise brightness or position control while minimizing MCU GPIO usage. The device supports Fast-mode Plus I²C communication up to 1 MHz and operates from a 2.3 V to 5.5 V supply range. It is commonly used in robotics, LED backlighting, automation systems, and PWM expansion modules for microcontrollers such as Arduino, ESP32, and Raspberry Pi. Key Features 16 independent PWM output channels 12-bit PWM resolution (4096 steps) Programmable PWM frequency from approximately 24 Hz to 1526 Hz I²C Fast-mode Plus compatible interface up to 1 MHz Six hardware address pins allowing up to 62 devices on one I²C bus Programmable open-drain or totem-pole outputs Output capability: 25 mA sink current 10 mA source current Internal 25 MHz oscillator with optional external clock input Individual programmable LED ON/OFF timing for reduced EMI and current surges Supports software reset and group addressing (All Call/Sub Call) 5.5 V tolerant inputs and outputs Operating voltage range: 2.3 V to 5.5 V Package: 28-pin TSSOP (PW suffix) #CommonPartsLibrary #IntegratedCircuit #PowerManagement #LEDdriver

This single-channel 5V relay expansion board, designed for seamless integration with the Seeed Studio XIAO series, brings robust performance and versatility to your projects. Featuring the HF32FA-G relay, it delivers reliable switching capabilities for a variety of applications, from IoT solutions to home automation systems.

SIM868 GNSS, GSM RF mikroBUS™ Click™ Platform Evaluation Expansion Board #CommonPartsLibrary #Developmentboard #Expansionboard

MP3 Player Audio Arduino Platform Evaluation Expansion Board #commonpartslibrary #developmentboard #mp3 #arduino

INA238 Current, Power, Voltage Monitor Power Management Qwiic, STEMMA QT Platform Evaluation Expansion Board #module #INA238

SIM800L GSM RF M5Stack Platform Evaluation Expansion Board #commonpartslibrary #developmentboard #expansionboard

Connector Header Through Hole 40 position 0.100" (2.54mm) Raspberry Pi 40 pin header The TSW-120-07-G-D is a through-hole, double-row vertical header manufactured by Samtec. It features 40 total positions (2 rows of 20 pins) with a standard 2.54 mm pitch. This connector is widely used for board-to-board connections, prototyping, and general-purpose signal routing in embedded and electronic systems. It is designed for reliable mechanical and electrical performance with gold-plated contacts for enhanced conductivity and corrosion resistance. Manufacturer Samtec Inc. Manufacturer Part Number TSW-120-07-G-D Product Type Through-Hole Pin Header Number of Positions 40 (2 × 20) Number of Rows 2 Pitch 2.54 mm (0.100") Row Spacing 2.54 mm (0.100") Mounting Type Through Hole Orientation Vertical Contact Material Phosphor Bronze Contact Plating Gold (Au) over Nickel Plating Thickness Typically 10 µin (0.25 µm) Gold Insulator Material Black Liquid Crystal Polymer (LCP) Current Rating Typically 3.0 A per contact (depending on application conditions) Voltage Rating Typically 250 VAC Operating Temperature Range -55°C to +125°C Termination Type Solder Contact Style Square Post Post Length Standard Samtec “-07” tail length (approx. 2.92 mm tail, varies slightly per datasheet) Applications Embedded systems (e.g., Raspberry Pi GPIO headers) Development boards and expansion modules Board-to-board interconnects Prototyping and test setups Compliance RoHS Compliant Lead-Free Notes Compatible with standard 2.54 mm female headers and sockets Commonly used in stacking or mezzanine configurations Available in various plating options and pin lengths under the TSW series #commonpartslibrary #connector

67 Position Female Connector M.2 (NGFF) Mini Card Gold 0.020" (0.50mm) Black # Engineering Specification ## Product Name 2199230-4 ## General Description 2199230-4 is a surface mount board-edge connector designed to support standardized M.2 module interfaces, specifically configured for Key E applications used in wireless communication, embedded computing, and high-speed peripheral expansion systems. The component provides a reliable mechanical and electrical interface between a host printed circuit board and a removable or fixed M.2 module. The connector is engineered to accept gold-finger edge contacts from an M.2 module, enabling secure signal transmission for high-speed data communication, power delivery, and control signaling. Its design supports stable mechanical retention, precise alignment, and consistent electrical contact performance under repeated mating cycles. This component is widely used in industrial computing platforms, telecommunications equipment, IoT devices, and embedded system architectures where modular expansion and standardized connectivity are required. It enables flexible system design by allowing interchangeable M.2 modules for wireless communication, storage, and specialized processing functions. The design emphasizes signal integrity, mechanical durability, and compatibility with high-density PCB layouts. It is suitable for applications requiring robust high-frequency performance and reliable long-term mechanical stability. ## Functional Requirements ### Module Interface The connector shall provide a standardized interface for M.2 Key E module insertion and electrical connection. ### Signal Transmission The connector shall support high-speed electrical signal routing between host systems and M.2 modules. ### Mechanical Retention The connector shall securely retain inserted modules under vibration and operational stress conditions. ### System Modularity The connector shall enable modular expansion and replacement of functional M.2 devices within host systems. ## Electrical Requirements ### Contact Performance The connector shall provide stable electrical contact between gold-finger module pads and host PCB terminals. ### Signal Integrity The design shall support high-frequency signal transmission with minimal loss and interference. ### Power Delivery The connector shall support regulated power distribution to installed M.2 modules. ### Low Resistance Path The electrical interface shall maintain low contact resistance for reliable long-term operation. ## Mechanical Requirements ### Board Edge Mounting The connector shall be mounted on a printed circuit board to accept edge-insertion M.2 modules. ### Alignment and Fit The design shall ensure precise alignment between module contacts and connector terminals. ### Durability The connector shall withstand repeated module insertion and removal cycles without performance degradation. ### Structural Stability The assembly shall maintain mechanical integrity under vibration and operational stress conditions. ## Environmental Requirements ### Operating Conditions The connector shall operate reliably in industrial, commercial, and embedded system environments. ### Thermal Performance The device shall maintain mechanical and electrical stability under elevated operating temperatures. ### Storage and Handling The component shall retain structural and functional integrity during storage, transportation, and assembly processes. ## Quality Requirements ### Reliability The connector shall provide consistent electrical and mechanical performance throughout its operational lifetime. ### Verification Mechanical retention, contact resistance, and signal integrity shall be validated through appropriate qualification testing. ### Compliance The product shall conform to applicable standards governing M.2 interface connectors and high-speed board-edge interconnect systems. ## Documentation Requirements Technical documentation shall include footprint layout guidance, mating interface specifications, signal routing recommendations, mechanical keep-out regions, and application guidelines for M.2 system integration. ## Classification Tags #21992304 #M2Connector #M2KeyE #EdgeCardConnector #GoldFingerInterface #HighSpeedConnector #BoardEdgeConnector #WirelessModuleConnector #PCIeInterface #NGFF #EmbeddedSystems #IoTHardware #TelecomHardware #PCBDesign #MechanicalConnector #SignalIntegrity #HighFrequencyDesign #CommonPartsLibrary #ComponentLibrary #EngineeringSpecification #SystemIntegration #HardwareDesign #TEConnectivity #ModuleInterface #BoardToModule

20 Position Receptacle Connector 0.100" (2.54mm) Through Hole Tin The SSQ-110-03-T-D is a through-hole dual-row socket strip receptacle connector manufactured by Samtec, designed for board-to-board and pin header mating applications using the industry-standard pitch spacing that has been dominant in through-hole PCB interconnect design for decades. It belongs to Samtec's SSQ series, a family of square-post socket strip connectors that accept standard square-pin headers and are widely used across prototyping, instrumentation, test and measurement, embedded systems, industrial control, and general-purpose PCB stacking applications. As a socket strip of the receptacle gender, the SSQ-110-03-T-D is intended to receive a mating male pin header, creating a reliable and separable board-to-board or wire-to-board connection. The dual-row configuration provides a higher contact density within a given board length than a single-row socket, which is why dual-row socket strips in this pitch class are extensively used in applications such as microcontroller and single-board computer expansion connectors, module-to-baseboard interfaces, and other designs where a significant number of signal, power, or ground connections must be made across a single separable connector interface. The connector features square solder tails for through-hole PCB mounting, with the "-T" suffix in the part number designating the square post tail style, which provides a well-defined mechanical footprint and reliable solder joint formation in wave solder and hand-solder assembly processes. The "-D" suffix indicates the dual-row configuration. Contact material is phosphor bronze, a widely used spring-contact alloy chosen for its combination of good electrical conductivity, excellent spring properties that maintain consistent contact force across many mating cycles, and resistance to stress relaxation over time. The contacts are finished with matte tin plating over nickel underplate, providing a solderable, cost-effective contact surface suitable for the majority of general-purpose signal and low-power applications for which this connector class is typically used. The insulator body is molded from black liquid crystal polymer, a high-performance engineering thermoplastic that offers the high dimensional stability, excellent electrical insulation properties, and high-temperature resistance needed to withstand wave soldering and reflow-adjacent thermal exposure during PCB assembly. The material also carries a UL94 V-0 flammability rating, reflecting its self-extinguishing behavior in the event of an ignition source, which is required or preferred in many end-product regulatory compliance frameworks. The SSQ series is widely used in conjunction with Samtec's TSW series male pin headers as a complementary mating pair, and the connector is compatible with a broad range of standard square-pin headers from other manufacturers that conform to the same pitch and pin geometry, making it a versatile choice for general-purpose through-hole header applications. Spec Sheet Identification Part Number: SSQ-110-03-T-D Series: SSQ Manufacturer: Samtec, Inc. Connector Type / Configuration Type: Socket strip receptacle Gender: Female (receptacle) Row Configuration: Dual row Orientation: Straight, vertical Mounting Method: Through-hole, solder tail Contact & Material Properties Contact Material: Phosphor bronze Contact Finish — Mating Zone: Matte tin over nickel Contact Finish — Post/Tail: Tin Contact Type: Forked socket, square post acceptance Post/Tail Style: Square solder tail Mechanical Specifications Contact Pitch: Standard pitch class, widely used through-hole spacing Profile Height: Standard SSQ series mated height class Insulator Color: Black Insulator Material: Liquid crystal polymer (LCP) Flammability Rating: UL94 V-0 Body Orientation: Straight Electrical Ratings Current Rating Per Contact: Mid-range per-pin current class Voltage Rating: High AC and DC voltage rating class for general-purpose signal use Mating Cycles: Rated for repeated mate/unmate cycles Environmental & Qualification Operating Temperature Range: Extended range, suitable for industrial environments RoHS Compliance: Yes Export Classification: EAR99 Mating Compatibility Mates With: Samtec TSW series male pin headers and compatible standard square-pin headers from other manufacturers Application Note: Suitable for board-to-board stacking, module-to-baseboard interfaces, SBC expansion connectors, and general-purpose through-hole header applications Packaging Supply Format: Bulk packaging #SSQ110 #Samtec #SocketStrip #DualRowConnector #ThroughHoleConnector #PCBReceptacle #PinHeader #BoardToBoard #FemaleSockets #PhosphorBronze #LCP #UL94V0 #EmbeddedSystems #Prototyping #InstrumentationConnector #GeneralPurposeConnector #ConnectorDatasheet #EngineeringSpec #ComponentLibrary #CommonPartsLibrary #RoHSCompliant #PCBDesign #CommonPartsLibrary #Connector #Header #Receptacle #Female-Socket #SSQ

This project is a motherboard for the ESP32-CAM module, which enables easy and flexible WiFi camera applications. The motherboard provides power supply, programming interface, and GPIO expansion for the ESP32-CAM. It also supports external sensors for more functionality. #motherboard #WiFi #MCU #ReferenceDesign #project #ESP32 #camera #reusable #module #edgeComputing #espressif #template

SMB, Fakra Connector Plug, Male Pin 50 Ohms Through Hole, Right Angle Solder The FA1-NDRP-PCB-8 is a PCB-mounted connector component typically used for reliable board-to-board or cable-to-board electrical interconnections in electronic systems. It is designed to provide stable mechanical retention and dependable signal or power transfer in compact PCB assemblies. Components in this series are commonly used in industrial equipment, consumer electronics, embedded systems, and communication devices. Key Features PCB-mount connector design for easy integration into electronic assemblies Supports secure electrical and mechanical connection Compact form factor suitable for space-constrained designs Durable housing and contact structure for repeated mating cycles Designed for stable signal and/or power transmission Typically used in control boards, interface modules, and embedded electronics Compatible with automated PCB assembly processes depending on package style Typical Applications Industrial control equipment Consumer electronics Embedded and IoT devices Communication hardware Interface and expansion boards #Connector #RF-connector #Coaxial

Seeed Studio CAN Bus Breakout Board is an expansion board compatible with all XIAO development boards. The integration of the MCP2515 controller and SN65HVD230 transceiver chips on the expansion board ensures seamless and efficient communication over the CAN Bus.

16 Bit Digital to Analog Converter 1 10-VSSOP The DAC80501MDGSR is a high-precision, single-channel digital-to-analog converter developed by Texas Instruments for industrial, instrumentation, and embedded control applications requiring accurate voltage output generation. The device integrates a low-drift voltage reference, precision output buffer, and serial peripheral interface communication into a compact low-power solution optimized for high-resolution signal generation. Designed for applications such as programmable power supplies, process control systems, automated test equipment, and sensor calibration, the device delivers excellent linearity, low noise performance, and stable output characteristics across varying environmental conditions. The integrated architecture minimizes external component requirements while maintaining high accuracy and long-term reliability. The converter supports rail-to-rail output operation and offers flexible reference configurations to accommodate different system architectures. Its SPI-compatible digital interface enables straightforward integration with microcontrollers, processors, and FPGA-based systems. Electrical Characteristics The device operates from a single analog supply and supports precision voltage output generation with monotonic performance across the full operating range. Integrated precision reference circuitry provides low temperature drift and stable output characteristics suitable for high-accuracy measurement and control systems. Low glitch energy, low offset error, and low gain error characteristics improve output stability during code transitions. The output amplifier is capable of driving moderate capacitive loads while maintaining signal integrity and settling performance. Interface and Control Communication is implemented through a high-speed SPI-compatible serial interface supporting standard synchronous digital communication protocols. The interface allows direct programming of DAC output codes and internal configuration registers. The device supports daisy-chain capable serial communication architecture for simplified expansion in multi-device systems. Internal registers provide control of reference operation, power management, and output configuration functions. Power Management The DAC80501MDGSR incorporates low-power operating modes intended for energy-sensitive applications. Integrated power-down functionality reduces current consumption during inactive system states while preserving configuration integrity. Internal circuitry is optimized for low quiescent current operation without compromising output precision or dynamic response performance. Package Information The device is supplied in a compact VSSOP surface-mount package suitable for space-constrained industrial and embedded designs. The package configuration supports automated assembly processes and standard PCB manufacturing techniques. Typical Applications Typical applications include industrial automation, programmable voltage sources, data acquisition systems, sensor simulation, instrumentation equipment, motor control systems, and precision calibration platforms. The device is particularly suitable for systems requiring stable and repeatable analog voltage generation with minimal external circuitry. #commonpartslibrary #integratedcircuit #analog #digital #converter

64 Position Female Connector PCI Express™ Gold 0.039" (1.00mm) Black The PCIE-064-02-X-D-TH is a high-density PCI Express edge connector designed for reliable board-to-board and card-to-host connections in high-speed data communication applications. Manufactured by Samtec, this connector supports PCI Express signaling standards while providing robust mechanical and electrical performance for high-frequency, high-bandwidth systems. Its through-hole mounting and dual-row design ensure secure attachment to the PCB, high mating retention, and long operational life. The connector is ideal for computer peripherals, server systems, embedded computing platforms, networking devices, and industrial electronic equipment where signal integrity, mechanical reliability, and high-density interconnects are critical. Engineering Specifications Manufacturer: Samtec Part Number: PCIE-064-02-X-D-TH Series: PCI Express Edge Connector Connector Type: Board-to-Board / Card Edge Connector Contact Configuration: Dual-Row High-Density Contacts Mounting Style: Through-Hole Contact Material: Copper Alloy Contact Finish: Gold-Plated Contact Surface Housing Material: High-Temperature Thermoplastic Signal Performance: PCI Express Standard Compliant Electrical Performance: High-Speed Data Transmission Mechanical Durability: High Mating Cycle Life Orientation: Right Angle / Standard Edge Mount Operating Temperature Range: Industrial Grade RoHS Compliant: Yes Applications: PCI Express Expansion Cards, High-Speed Computing Systems, Server and Data Center Hardware, Embedded Platforms, Networking Equipment, Industrial Computing, High-Bandwidth Digital Interfaces, Board-Level Interconnects Key Features High-density dual-row PCIe edge contacts Through-hole mounting for robust PCB attachment Gold-plated contact interface for reliable signal transmission Supports high-speed PCI Express signaling Compact, high-density design for space-constrained PCBs Long mechanical life with repeated mating cycles Compatible with standard PCI Express cards and connectors Reliable operation in industrial and commercial environments Ideal for embedded computing, server, and networking applications Ensures signal integrity for high-bandwidth data communication #PCIE06402XDTH #Samtec #PCIeConnector #EdgeConnector #BoardToBoard #HighSpeedInterconnect #HighDensityConnector #ThroughHole #IndustrialElectronics #EmbeddedSystems #ServerHardware #NetworkingEquipment #ElectronicComponents #PCBDesign #HighBandwidth #DataCommunication #PCIExpress #ExpansionCardConnector #MechanicalReliability #ElectronicInterconnect