HX711 Load Cell Amplifier Module – 24-Bit ADC - 7Semi

SmartElex PAM8403 5V Two-Channel Stereo Mini Class-D Audio Amplifier The SmartElex PAM8403 5V Two-Channel Stereo Mini Class-D Audio Amplifier is a compact audio amplification module designed to deliver clear and efficient stereo sound from low-power audio sources. It solves the need for adding audio output to small electronic projects without bulky components or complex circuits. This module is suitable for students, makers, engineers, educators, and startups who want an easy way to integrate stereo audio into DIY electronics, learning kits, and embedded system prototypes. This stereo mini Class-D audio amplifier is commonly used in robotics, IoT devices, automation systems, and portable electronics that require lightweight and power-efficient audio output. It can be easily interfaced with platforms such as Arduino, Raspberry Pi, and ESP32 to drive small speakers in projects like voice alerts, sound feedback systems, and interactive devices. The simple design and stable performance make it easy to integrate into both prototype builds and finished products, enabling reliable audio output with minimal setup effort. Features: Two-channel stereo Class-D audio amplifier for clear sound output Operates on a 5V power supply, ideal for embedded projects High efficiency design with low heat generation Compact size suitable for space-constrained applications Drives small speakers for stereo audio output Compatible with Arduino, Raspberry Pi, ESP32, and other audio-enabled projects

7Semi SHT41 Temperature & Humidity Sensor Breakout with I2C Qwiic Interface The 7Semi SHT41 Temperature & Humidity Sensor Breakout is a high-precision humidity sensor module built for engineers, developers, and IoT creators who need reliable environmental data in compact embedded systems. Powered by Sensirion’s advanced CMOSens® technology, this I2C temperature sensor delivers accurate readings across a wide range, making it ideal for smart home automation, HVAC upgrades, weather stations, and industrial monitoring systems. With its accurate ±1.5% RH humidity and ±0.2°C temperature performance, it ensures consistent measurements even in demanding environments. Designed with a built-in Qwiic connector, the breakout allows fast, solder-free plug-and-play integration into Qwiic-compatible ecosystems like Arduino, Raspberry Pi, and other development platforms. Its quick response time, low power consumption, and compact 30 × 22 mm footprint make it a dependable environmental monitoring sensor for portable, battery-powered devices, IoT prototypes, and educational projects. Whether used in climate control systems or air-quality tracking, the SHT41 provides robust, long-term stability. Features: Designed with Sensirion’s CMOSens® technology to deliver high-accuracy temperature and humidity readings with long-term stability. Offers a full 0–100% RH humidity range and a wide temperature range of -40°C to 125°C, making it suitable for varied climates and applications. Integrated Qwiic connector provides seamless, solder-free connectivity for rapid prototyping and easy hardware integration. Supports I2C communication, allowing compatibility with Arduino, Raspberry Pi, ESP32, and other development platforms. Features a compact and lightweight 30 × 22 mm PCB, ideal for embedded and space-constrained designs. Operates on 3.3V–5V supply with low operating current, making it suitable for battery-powered and energy-efficient systems.

7Semi 5A Analog INA169 DC Current Sensor Breakout The 7Semi 5A Analog INA169 DC Current Sensor Breakout is a precision Analog DC current sensor designed for accurate current monitoring in electronic circuits. Powered by the trusted INA169 chip, it delivers consistent current readings up to 5A across a wide input range of 2.7V to 60V. Its low offset voltage and minimal quiescent current ensure reliable measurements, while adjustable gain and overcurrent protection add versatility for various applications. Compact and easy to integrate with microcontroller-based systems, this INA169 current sensor is perfect for IoT projects, battery management, power monitoring, and smart energy solutions, providing dependable performance for both hobbyists and professional engineers. Features: Wide Voltage Range Compatibility: Operates efficiently between 2.7V and 60V, making it suitable for both low and high-voltage applications. High-Side Current measuring: Enables unipolar high-side current measuring for safer and more accurate readings. Customizable Gain Control: Easily alter output sensitivity with a single resistor to meet your individual application requirements. Built-in Signal Amplifier: Provides clean and amplified output signals for accurate ADC conversion. Overcurrent detection protects connected components by detecting and responding to excessive current. Low Quiescent Current: Consumes only 60 µA, making it ideal for energy-sensitive projects. Microcontroller-Friendly: Fully compatible with Arduino, ESP32, STM32, Raspberry Pi, and other development boards. Compact Design: Small form factor excellent for embedded system integration and space constraints. Connection Diagram with Arduino:

7Semi SHT45 Humidity & Temperature Sensor Breakout Board with 4-Pin Connector Get reliable and highly precise environmental readings with the 7Semi SHT45 Humidity & Temperature Sensor Breakout, engineered for applications where accuracy truly matters. Built on Sensirion’s advanced SHT45 platform, this compact module delivers outstanding measurement performance with ±1.0% RH humidity accuracy and ±0.1°C temperature accuracy. Whether you're developing an HVAC controller, creating a weather-monitoring setup, or designing a smart agriculture system, this breakout ensures stable, real-time data you can trust. Designed with a 4-pin JST connector and I2C communication, the sensor integrates effortlessly into microcontroller projects using platforms such as Arduino, ESP32, or Raspberry Pi. The ultra-low power consumption and wide operating voltage range make it ideal for both portable and embedded IoT devices. Its fast response time and factory-calibrated output allow creators, engineers, and automation designers to build systems that depend on precise climate data without additional tuning. This makes it an excellent choice for environmental monitoring, industrial automation, and smart home development. Features: Provides exceptionally accurate measurements with ±1.0% RH humidity accuracy and ±0.1°C temperature accuracy for reliable environmental tracking. Covers a wide operating range of 0–100% RH and -40°C to 125°C, making it suitable for diverse climates and industrial environments. Delivers fast response times, ensuring timely humidity and temperature updates for real-time applications. Designed with ultra-low power CMOSens® technology, making it ideal for long-duration, battery-powered systems. Offers seamless integration through its I2C interface and 4-pin JST connector, enabling quick and secure connectivity with most MCUs. Operates efficiently across a supply voltage range of 1.08V to 3.6V, enhancing compatibility across different devices. Comes factory-calibrated with a certification, ensuring immediate plug-and-play accuracy without additional configuration.

7Semi ESP32-C6 Mini Wifi Development Board Qwiic (DC-10116) The 7Semi ESP32-C6 Mini Wifi Development Board Qwiic is a compact and powerful wireless development board built around the modern ESP32-C6 chipset. It brings together fast Wi-Fi connectivity and flexible input/output options in a small Qwiic-compatible form factor, making it easy to use in projects that need smart communication and control. This board supports Wi-Fi 6 and Bluetooth/BLE connectivity, along with plenty of programmable pins for sensors, modules, and other components. With its Qwiic connector, you can plug in compatible accessories without soldering, simplifying prototyping and expanding your project quickly. Whether you’re building IoT devices, smart sensors, or remote controls, this ESP32-C6 board delivers reliable performance and effortless integration. Features: Powered by the ESP32-C6 chipset for modern wireless applications Supports Wi-Fi 6 for faster and more reliable connectivity Built-in Bluetooth / BLE support for short-range communication Qwiic connector for quick, solder-free sensor and module connections Compact form factor ideal for IoT and embedded projects Multiple GPIO pins for connecting sensors, actuators, and displays Compatible with popular development environments and libraries Suitable for smart devices, automation, and prototyping Pinouts

SmartElex BS312 PIR Motion Sensor The SmartElex BS312 PIR Motion Sensor is a compact passive infrared sensor designed to detect human motion by sensing changes in infrared radiation. It helps systems respond only when movement is present, reducing unnecessary power usage and improving efficiency. This sensor is suitable for students, makers, engineers, educators, and startups who are building electronics projects that require reliable motion detection in a small, low-power form factor. This PIR motion sensor is ideal for robotics, IoT devices, security systems, and automation projects, especially those that run on batteries or need low standby power consumption. It can be easily interfaced with popular platforms such as Arduino, Raspberry Pi, and ESP32, making integration quick and straightforward. Common use cases include motion-activated lighting, smart alarms, occupancy detection, and compact IoT monitoring solutions where dependable performance and simple integration are essential. Features: Compact PIR sensor for accurate human motion detection Detects movement using passive infrared technology Low power consumption ideal for battery-powered projects Digital output for easy interfacing with microcontrollers Fast response time for real-time motion detection Compatible with Arduino, Raspberry Pi, ESP32, and similar boards

7Semi OPT3004 Digital Ambient Light Sensor Breakout with I2C STEMMA QT / Qwiic The 7Semi OPT3004 Digital Ambient Light Sensor Breakout is a compact and high-precision module designed to measure visible light just the way the human eye perceives it. Built around the OPT3004 sensor, it delivers exceptional accuracy, wide dynamic range, and excellent infrared rejection, making it ideal for real-world lighting applications. With seamless I2C compatibility and Qwiic/STEMMA QT support, this breakout is easy to integrate into microcontroller or IoT setups without complicated wiring. Whether you're building smart lighting systems, automating energy-efficient environments, or experimenting with environmental monitoring projects, this module provides consistent and dependable lux readings. Its advanced design, low-power performance, and precise optical filtering make it a reliable choice for hobbyists, students, and professional developers looking for accurate ambient light sensing in their projects. Features: The breakout uses the OPT3004 sensor, which delivers precise visible light measurements with excellent IR rejection to mimic human eye response. It offers a wide measurement range from 0.01 lux to 83,000 lux, allowing accurate performance in dim to bright environments. The module includes automatic gain ranging with a 23-bit effective dynamic range, ensuring stable results without manual adjustments. Designed with I2C support and Qwiic/STEMMA QT connectors, it enables quick, solder-free integration into various electronics projects. The board operates smoothly on both 3.3V and 5V supplies, making it compatible with popular microcontroller platforms. Its compact 27×20 mm footprint makes it suitable for space-constrained embedded or portable applications. Built with precision optical filtering to block over 99% infrared light within a ±85° angle for truly accurate lux readings.

Witty Fox Hot Melt Glue Gun 60w with EU Plug Witty Fox Hot Melt Glue Gun 60W with EU Plug is a powerful and versatile adhesive tool designed to handle a variety of bonding tasks with ease. With 60 watts of power, it heats up quickly and melts glue sticks efficiently, providing a strong and steady flow of hot glue. This makes it perfect for heavier DIY projects, crafting, home repairs, and even light woodworking tasks. This glue gun features a standard EU plug, so you can easily connect it directly to household power outlets without needing extra adapters. Its ergonomic design offers a comfortable grip and good control, making it easy to apply glue precisely where you need it. Whether you’re fixing broken items, creating decorative pieces, or working on larger craft projects, the Witty Fox 60W Hot Melt Glue Gun delivers reliable performance and strong adhesive results in a ready-to-use package. Features: 60W high-power heating for fast melt and strong glue flow Standard EU plug for direct connection to mains power Quick heat-up suitable for continuous and heavy-duty use Compatible with standard hot melt glue sticks Comfortable ergonomic handle for better control and precision Ideal for DIY crafts, home repairs, woodworking, and workshop tasks

RadioLink SE100 M10 GPS Module with High Positional Accuracy for Drones & UAVs The SE100 M10 GPS Module with High Positional Accuracy is a precision navigation sensor designed to provide reliable and accurate positioning data for drones, UAVs, robotics, and other GPS-enabled applications. Featuring advanced satellite signal processing and a compact form factor, this module ensures strong signal reception, fast satellite lock times, and stable performance even in challenging environments. Ideal for both hobbyists and professional developers, the SE100 M10 offers seamless integration with flight controllers and navigation systems, helping improve flight stability, waypoint tracking, and autonomous operation. Whether you’re building a custom drone, upgrading navigation accuracy, or enhancing your robotics project, this GPS module delivers dependable performance for enhanced control and situational awareness. Features: High positional accuracy GPS module for drones, UAVs, and robotics applications Powered by advanced M10 GNSS technology for improved satellite tracking Fast satellite acquisition with stable and reliable signal reception Compact and lightweight design for easy integration with flight controllers Supports precise navigation, waypoint tracking, and autonomous flight modes Suitable for hobby, research, and professional UAV projects

SmartElex DS3232 RTC (Real Time Clock) Breakout Module The SmartElex DS3232 RTC Breakout Module is a reliable DS3232 RTC module designed for accurate and long-term timekeeping in electronics and IoT projects. With an integrated crystal oscillator and temperature-compensated circuitry, it maintains precise date and time even under changing environmental conditions. This real-time clock module supports I²C communication, making it simple to interface with popular microcontrollers for applications such as data logging, digital clocks, alarms, and automation systems. A coin cell battery backup keeps the clock running during power loss, while its low power consumption and stable performance make it ideal for projects that demand exact timing and consistent operation over years. Features: Integrated crystal for accurate timekeeping. Temperature correction to reduce drift. Compact design that works well with breadboards. Works with I²C interface for microcontroller integration. Includes a coin cell battery backup for uninterrupted operation. Fully constructed and tested module ready for speedy deployment. Compatible with Arduino, Raspberry Pi, and other platforms. Low power usage results in longer battery life.

7Semi MAX31855 K-Type Thermocouple Amplifier Breakout The 7Semi MAX31855 Thermocouple Amplifier Breakout is designed for creators, engineers, and industrial users who need reliable and highly accurate temperature readings from extreme environments. With its advanced MAX31855 converter IC, this breakout allows effortless digital temperature measurement using K-type thermocouples, making it a powerful choice for applications like 3D printing, HVAC monitoring, and high-heat industrial systems. The onboard cold-junction compensation ensures precision by automatically correcting any thermal offsets at the connector. Supporting temperatures from -270°C to +1372°C, it delivers 14-bit resolution with smooth 0.25°C read steps, providing dependable, noise-free readings for sensitive processes. Built-in fault detection helps identify open circuits or shorts, making the system easier to troubleshoot and safer for continuous operation. With its SPI-based digital interface and compatibility with 3.3V/5V logic microcontrollers, the module integrates cleanly with Arduino, ESP32, Raspberry Pi, and industrial controllers. Features: Supports a wide thermocouple measurement range from –270°C to +1372°C, making it suitable for extreme heat and cryogenic applications. Provides 14-bit high-resolution output with precise 0.25°C increments for accurate temperature monitoring. Includes built-in cold-junction compensation, ensuring reliable compensation for ambient temperature fluctuations. Offers a simple SPI digital interface, requiring minimal I/O pins for easy integration with most microcontrollers. Compatible with multiple thermocouple types including K, J, N, T, S, R, and E, providing versatility in system design. Features fault detection for open thermocouples and shorts to VCC/GND to enhance system safety. Supports both 3.3V and 5V logic levels, ensuring broad compatibility across development boards.

7Semi SHT40 SGP40 VOC Environmental Monitoring Sensor Module Qwiic-Ready The 7Semi SHT40 + SGP40 VOC Environmental Monitoring Sensor Module is designed to help you measure temperature, humidity, and air quality with high accuracy and minimal effort. Built with advanced SHT40 and SGP40 sensing technology, this compact module delivers precise data for temperature (–40°C to 125°C), humidity (0–100% RH), and VOC levels with excellent response time and reliability. Whether you're prototyping with Arduino, Raspberry Pi, or any I2C-based microcontroller, the Qwiic-compatible interface makes integration incredibly simple and clean. This breakout board is ideal for home automation, indoor air-quality projects, workplace monitoring, or industrial systems where accurate VOC readings matter. Its low power consumption and digital 16-bit output make it highly suitable for long-term IoT deployments, high-precision environmental sensing projects, and portable air-quality monitors. Features: Designed as a compact breakout board integrating the SHT40 high-precision temperature and humidity sensor and the SGP40 VOC sensor for reliable environmental monitoring. Offers fast and accurate measurements, including ±0.2°C temperature accuracy and ±1.8% RH humidity accuracy, ensuring dependable readings in various environments. Qwiic-compatible interface enables effortless plug-and-play connectivity with I2C-enabled microcontrollers and SBCs without soldering. Produces 16-bit digital raw and processed VOC Index signals for easy integration into data-logging, automation, or IoT systems. Ensures low power consumption, making it suitable for battery-powered and continuous-monitoring applications. Built to detect a wide range of volatile organic compounds such as ethanol, acetone, and formaldehyde with high sensitivity and quick response times. Board Dimensions: Arduino I2C Connection Diagram:

DFRobot Gravity 7/24 Industrial Analog pH Sensor Meter Kit for Arduino The DFRobot Gravity 7/24 Industrial Analog pH Sensor Meter Kit for Arduino is a high-precision Analog pH Sensor designed for professional and industrial applications requiring continuous pH monitoring. This Arduino pH Sensor uses an industrial-grade glass membrane electrode with low impedance, delivering fast response, excellent thermal stability, and stable performance over long periods. It supports a full measurement range of 0 pH to 14 pH with linear voltage output, ensuring accurate and reliable readings. The sensor integrates easily through a BNC connector and PH2.0 interface, allowing direct connection to any Arduino analog input. Its reference system, based on Ag/AgCl gel electrolyte with a PTFE membrane, provides strong anti-pollution characteristics and prevents clogging, making it an ideal industrial pH sensor for Arduino for water treatment systems, environmental monitoring, and laboratory analysis. Attention: The probe's bottle top contains protective fluids (3.3mol/L KCL). Even if the bottle cap is tightly fastened, some protective liquid may leak around it, resulting in white crystals. However, as long as the bottle top contains protective liquid, the probe's life and accuracy will be unaffected. Please use it with confidence. It is recommended that the white crystals be returned to the bottle cap's protective liquid. Features Industrial-grade Analog pH Sensor for accurate measurement Compatible with Arduino and other microcontrollers Measures pH range from 0 to 14 Fast response with high stability BNC connector for secure sensor connection Plug-and-play PH2.0 analog interface Built-in power indicator LED Suitable for long-term online monitoring Low maintenance and long sensor life Ideal for water quality and lab applications Applications Water Quality Surveillance Aquaculture

7Semi Vikram-3015 High-Power 30V 15A Single-Channel DC Motor Driver Module The 7Semi Vikram-3015 is a powerful and reliable high-current motor driver designed to handle demanding brushed DC motor applications with ease. Built for makers, robotics engineers, and automation projects, it supports a wide operating voltage range of 6V to 30V and delivers a continuous 15A output without requiring a heat sink. Its fully NMOS H-Bridge architecture ensures excellent efficiency, making it ideal for high-load motor control setups that require consistency and stable performance. With support for 3.3V and 5V logic levels, the Vikram-3015 easily integrates with popular development platforms such as Arduino, Raspberry Pi, and PLC systems. The on-board test buttons, motor output LEDs, and robust protection circuitry, such as overcurrent, overheating, and undervoltage protection, simplify debugging and ensure long-term reliability. Whether you're building robotics systems, automation hardware, or DIY mechatronics, this motor driver provides a dependable foundation for high-torque motor control. Features: Provides smooth bidirectional control for single-channel brushed DC motors, enabling forward and reverse operation with high responsiveness. Operates efficiently across a wide 6V–30V voltage range while delivering a strong and stable 15A continuous current output. Supports both 3.3V and 5V logic inputs, ensuring seamless compatibility with microcontrollers and SBCs like Arduino and Raspberry Pi. Includes onboard testing features such as dedicated buttons and motor output LEDs for quick diagnostics and validation. Offers robust safety mechanisms including overcurrent protection, over-temperature shutdown, and undervoltage lockout for long-term durability. Uses a fully NMOS H-Bridge, improving efficiency and eliminating the need for bulky heat sinks.

7Semi BME688 Environmental Sensor Probe with Gas, Pressure, Temperature & Humidity Sensor The 7Semi BME688 Environmental Sensor Probe is a compact, AI-enabled environmental monitoring solution designed for precise measurements of temperature, humidity, barometric pressure, and gas levels. Built using the advanced Bosch BME688 sensor, it provides highly accurate, real-time environmental data that supports air quality monitoring, research applications, industrial automation, and smart home systems. Housed in a durable plastic shell, the probe ensures long-term stability while maintaining excellent breathability necessary for accurate gas sensing. This versatile environmental probe uses an I2C digital interface for easy integration with microcontrollers and embedded systems, making it suitable for both portable and fixed installations. With a wide operating range and low power consumption, it delivers stable performance even in harsh or fluctuating environments. AI-powered gas sensing adds advanced analytical capabilities such as IAQ scoring, VOC detection, CO₂-equivalent estimation, and bVOC outputs, making this probe a powerful tool for environmental diagnostics and air-quality-driven automation. Features: Provides simultaneous measurement of temperature, humidity, pressure, and gas concentration, enabling complete environmental assessment in a single compact device. AI-powered gas sensing detects VOCs, CO₂-equivalents, and various gases at ppb-level sensitivity for accurate indoor air quality monitoring. Durable plastic enclosure offers strong resistance to corrosion, dust, and temperature variations while maintaining high permeability for reliable sensing. Wide operational range ensures dependable performance from -40 to 85°C and 0–100% RH, suitable for both indoor and outdoor monitoring environments. Low power design supports battery-operated systems, making it ideal for portable, energy-efficient projects. Mini Round Shell (MRS) connector with a 1m cable provides secure and professional-grade installation flexibility. I2C digital communication interface simplifies integration with embedded systems and common microcontrollers. NIST-traceable factory calibration guarantees accuracy for industrial, regulatory, and research applications. Delivers advanced analytical outputs including IAQ, bVOC, CO₂-equivalent, gas intensity, gas scan, and air quality indexes. Humidity Sensors Pins: Digital Humidity and Temperature Sensor Probe I2C Interfacing with MCU: