The SparkFun RedBot Mainboard is a robotic development platform that works with the Arduino IDE. The RedBot is a motor driver and Ardiuno combination with various headers and connections, eliminating the need to stack multiple shields.

ESP32-S3-Zero is a compact Waveshare castellated development module based on the dual-core 240 MHz ESP32-S3FH4R2, featuring 2.4 GHz Wi-Fi, Bluetooth 5 LE, 4 MB Flash, 2 MB PSRAM, an onboard USB Type-C port, and a ceramic antenna. Keywords: ESP32-S3-Zero, Wi-Fi BLE module, ESP32-S3 development board, castellated module, USB Type-C

Stand-alone single-cell linear battery charger with power path BQ24074RGTT is a highly integrated standalone linear charger and power-path management IC from Texas Instruments designed for single-cell Li-Ion/Li-Polymer battery-powered portable devices. It supports charging directly from USB ports or external adapters while simultaneously powering the system load through integrated Dynamic Power Path Management (DPPM). The device is commonly used in portable electronics, IoT devices, wireless accessories, handheld medical devices, and battery-powered embedded systems. Key Features Single-cell Li-Ion/Li-Polymer battery charger Up to 1.5 A programmable charge current Integrated Dynamic Power Path Management (DPPM) USB-compliant charging support Selectable 100 mA / 500 mA USB current limits Programmable input current limit up to 1.5 A Supports both USB input and wall adapters Input overvoltage protection up to 28 V absolute maximum Integrated thermal regulation and thermal shutdown Reverse-current and short-circuit protection Programmable pre-charge and fast-charge safety timers Battery temperature monitoring via NTC thermistor input Charge status outputs for charging/done indication Current monitoring output (ISET) Compact 16-pin VQFN (3×3 mm) package Wide operating temperature range suitable for industrial applications Typical Applications TWS charging cases and earbuds Portable medical devices IoT and asset tracking systems Handheld gaming accessories Video doorbells and IP cameras Portable embedded systems and development boards Important Design Notes Designed specifically for 1-cell battery applications Requires proper thermal PCB layout due to linear charging architecture DPPM allows the system to operate even with a deeply discharged or missing battery Recommended for compact designs needing integrated charging and system power-path control #CommonPartsLibrary #IntegratedCircuit #PowerManagement

SWITCH TACTILE SPST SMD The KH-6X6X5H-STM is a compact surface-mount tactile push-button switch manufactured by Kinghelm. It is a 6 mm × 6 mm momentary SPST (Single Pole Single Throw) switch designed for user-input functions in consumer electronics, industrial controls, embedded systems, IoT devices, and portable equipment. The switch provides tactile feedback when pressed and automatically returns to its normal state when released. Key Features Tactile momentary switch with click feedback SPST normally-open contact configuration 6 mm × 6 mm footprint 5 mm actuator height Surface-mount (SMT) package 4-pin gull-wing terminals 12 V DC rated voltage 50 mA contact current rating 80,000-cycle mechanical life Round black actuator button Vertical actuation design Compact size suitable for dense PCB layouts RoHS compliant Typical Applications Power and reset buttons Consumer electronics Remote controls IoT and smart devices Industrial control panels Portable instruments Embedded development boards Home appliances and control interfaces For PCB library creation, the component is commonly classified as: Component Type: Tactile Switch Switch Configuration: SPST-NO Mounting Type: Surface Mount (SMT) Package: SMD-4P, 6×6 mm Designator Prefix: SW #CommonPartsLibrary #Switch

CONN SOCKET 4POS 2.54mm SINGLE ROW TH This connector consists of a single row of 4 electrical pins spaced 2.54 mm apart. It is typically available as a male pin header, female header, or wafer connector depending on the application. The part is commonly used for power, signal, UART, GPIO, sensor, and programming connections in embedded systems and prototyping. Key Features 2.54 mm pitch spacing Industry-standard spacing compatible with breadboards and jumper wires 1x4 configuration Single row with 4 contacts/pins Compact PCB connection solution Suitable for board-to-board or wire-to-board applications Easy solder mounting Typically through-hole (THT), though SMT variants may exist Wide compatibility Works with Arduino, Raspberry Pi modules, sensors, and development boards Durable metal contacts Usually tin- or gold-plated for reliable electrical connection Multiple orientations available Straight vertical or right-angle versions Low-cost and widely available Commonly used in consumer electronics and DIY projects Common Applications GPIO and sensor connections UART / serial interfaces Power input/output headers Embedded system prototyping Module interconnections Debug and programming interfaces #CommonPartsLibrary #Connector

The ESP32-S3-WROOM-1-N16R8 is a high-performance Wi-Fi and Bluetooth Low Energy (BLE) module from Espressif Systems, built around the ESP32-S3 SoC. It integrates a dual-core Xtensa® LX7 processor running at up to 240 MHz, along with 16 MB Quad SPI Flash and 8 MB Octal SPI PSRAM, making it suitable for memory-intensive embedded, IoT, AIoT, multimedia, and edge AI applications. The module includes an onboard PCB antenna, RF matching circuitry, crystal oscillator, and flash/PSRAM, simplifying hardware design and reducing development time. Key Features Dual-core Xtensa LX7 CPU operating up to 240 MHz 16 MB onboard Flash memory 8 MB onboard Octal PSRAM for large buffers, graphics, and AI workloads 2.4 GHz Wi-Fi (IEEE 802.11 b/g/n) Bluetooth 5.0 Low Energy (BLE) Built-in support for AI acceleration and vector instructions for machine learning and signal processing applications Rich peripheral set including: GPIO UART SPI I²C I²S USB 2.0 OTG PWM ADC Touch sensing SD/MMC interface CAN (TWAI) Integrated USB Serial/JTAG debugging capability Supply voltage range: 3.0 V to 3.6 V Operating temperature: −40°C to +65°C Surface-mount module with integrated PCB antenna Supports secure boot, flash encryption, and hardware cryptographic acceleration for secure IoT devices. Typical Applications Smart home and IoT devices Edge AI and machine learning Voice assistants and speech recognition Industrial automation Human-machine interfaces (HMI) Wireless sensors and gateways Smart displays and touch panels Audio streaming and multimedia devices Robotics and connected products #RF-Transceiver #Module #ESP32

USB-to-UART Bridge CP2102N-A02-GQFN24 is a highly integrated USB-to-UART bridge controller from Silicon Labs. It provides a simple and cost-effective way to add USB connectivity to embedded systems by converting USB 2.0 Full-Speed communication into a standard UART interface. The device integrates the USB transceiver, oscillator, voltage regulator, and UART controller, minimizing external components and eliminating the need for USB firmware development. It is commonly used in microcontroller programming interfaces, industrial equipment, POS terminals, data loggers, and USB-to-serial adapters. Key Features USB 2.0 Full-Speed compliant (12 Mbps) interface. USB-to-UART bridge with data rates up to 3 Mbaud. Integrated USB transceiver; no external USB resistors required. Integrated oscillator; no external crystal required. On-chip 3.3 V voltage regulator. USB Battery Charger Detection (BC 1.2) support. Remote wakeup capability from USB suspend state. Low operating current of approximately 9.5 mA. Hardware and software flow control support. Internal configurable ROM for Vendor ID, Product ID, serial number, and USB descriptors. Royalty-free Virtual COM Port (VCP) drivers available for major operating systems. Operating temperature range: −40°C to +85°C. Compact 24-pin QFN (4 mm × 4 mm) package. Typical Applications USB-to-Serial adapters Microcontroller programming and debugging interfaces Industrial automation equipment Point-of-sale (POS) terminals Medical instruments Data acquisition and logging systems Embedded systems requiring USB connectivity #commonpartslibrary #integratedcircuit