Analog pH Sensor Electrode with Amplifier Circuit

7Semi SHT45 and SGP41 Environmental Sensor Breakout The 7Semi SHT45 and SGP41 Environmental Sensor Breakout is a versatile environmental sensor module designed for accurate and simultaneous measurement of temperature, humidity, and air quality. By combining high-precision SHT45 sensing with the advanced SGP41 air quality sensor on one compact board, it simplifies environmental monitoring for a wide range of projects. Whether you’re building smart home systems, indoor air quality stations, or industrial monitoring tools, this sensor package provides reliable real-time data where it matters most. Offering stable performance with easy digital communication interfaces, this breakout is ideal for both beginners and advanced makers. Its compatibility with popular microcontrollers and development platforms makes integration seamless for IoT applications, HVAC control, weather stations, and wellness monitoring systems. Students, hobbyists, and professionals alike will appreciate the module’s precision, low power use, and plug-and-play ease for projects requiring dependable environmental sensing. Features: SHT45 High accuracy with ±1.0% RH and ±0.1°C temperature precision Built on advanced CMOSens technology for improved accuracy and low power use Optimized for standard SMD assembly, suitable for high-volume production SGP41 Digital VOC sensor designed for indoor air quality monitoring Patented CMOSens technology with temperature-controlled micro-hotplate I²C interface for easy integration with microcontrollers Humidity compensation for accurate air quality readings Compatible with VOC algorithms for immediate IAQ evaluation

Cytron Maker UNO X – Arduino Compatible Development Board for Classroom The Cytron Maker UNO X is a beginner-friendly, classroom-ready Arduino-compatible development board designed to simplify STEM education. Equipped with built-in LEDs on every digital pin, a programmable push button, a piezo buzzer, and a powerbank-friendly design, it eliminates messy wiring and allows students to start coding instantly. This board is ideal for Arduino beginners, school STEM labs, coding clubs, training centers, and anyone learning microcontroller basics. With plug-and-play functionality and seamless compatibility with Arduino IDE, it delivers a smooth learning experience for educators and students alike. Created with the needs of teachers in mind, the Cytron Maker UNO X features an onboard half-size breadboard and perfboard for quick prototyping, making it easy to build hands-on electronics projects right out of the box. Powered by the ATmega328P, and complete with essential interfaces like UART, SPI, I2C, PWM pins, and analog inputs, this board is perfect for exploring coding, electronics, and robotics in a structured classroom setup. Whether for STEM workshops, school projects, or Arduino training programs, Maker UNO X provides an engaging, frustration-free learning experience. Features: Fully Arduino UNO-compatible board designed specially for classrooms and STEM beginners. Built-in LED indicators on every digital pin, allowing students to visualize code output instantly without wiring. Includes piezo buzzer, programmable push button, and powerbank-friendly operation for portable projects. Comes with an onboard perfboard prototyping area and a half-size breadboard to simplify hands-on experiments. Powered by the reliable ATmega328P microcontroller with 16MHz clock speed and full support in Arduino IDE. Offers 20 digital I/O pins, 6 PWM pins, 6 analog inputs, and communication interfaces (UART, SPI, I2C). Features 32KB Flash, 2KB SRAM, 1KB EEPROM, making it ideal for beginner programming and small-scale electronics projects. Uses a USB Micro-B interface with CH9340 USB-UART chip (note: not supported on Windows 7). Designed by Cytron to support educators - ensures faster learning with fewer wiring issues and more hands-on coding.

SmartElex 5V 3A 8 Channel Signal Relay Module The SmartElex 5V 3A 8 Channel Signal Relay Module is a dependable switching solution built to control multiple electrical devices with precision. This 8 Channel Relay Module features eight JY4100F-S-DC5V-C relays, each capable of safely switching loads up to 3A at 120V AC or 24V DC. Designed to operate on a stable 5V supply, it offers individual input triggers and LED indicators for real-time status visibility. With strong electrical isolation and seamless compatibility with Arduino, ESP32, and Raspberry Pi, this 5V relay module is well-suited for automation panels, IoT systems, and complex control applications where reliable multi-channel switching is essential. Applications: Smart home automation (e.g., managing several appliances) Complex industrial automation systems. Robotics projects require several actuators. IoT systems have several relay outputs. Alarms, security, and access control panels Cautions: Use a well regulated 5V supply with adequate current (at least 1A suggested). Ensure that relay load restrictions are not exceeded. To avoid electrical dangers, securely isolate all AC wiring. Maintain a dry, clean, and dust-free atmosphere. Features: An 8-channel relay module with individual control. It operates at 5V DC and has active LOW/HIGH triggers. Each relay can handle 3A at 120V AC or 24V DC. Compatible with Arduino, ESP32, Raspberry Pi, and more platforms. Status LEDs for each channel are used to monitor operation. Fast switching: ≤10 ms operation and ≤5 ms release. Contact resistance of ≤100 mΩ enables stable conductivity. Total power usage is around 2.88W across all channels. High insulation resistance and dielectric strength are essential for safety. Suitable for -40°C to +85°C temperatures.

Cytron UNO – Arduino UNO Compatible Board with USB Micro-B The Cytron UNO is a fully Arduino UNO compatible development board built with the reliable ATmega328P microcontroller, making it ideal for beginners, students, hobbyists, and electronics enthusiasts. Designed to offer the same functionality as the Arduino UNO R3, the Cytron UNO includes 14 digital I/O pins, 6 PWM outputs, 6 analog inputs, UART, SPI, I2C, and full R3 shield compatibility. With USB Micro-B connectivity, you can easily program the board using the same cable used for Android phones and power banks - making it more convenient and cost-friendly for modern makers. Cytron further enhances the board with a stronger onboard voltage regulator, improved power handling, and repositioned LEDs on the edge for better visibility, even when a shield is attached. The CT-UNO also includes extra standard pads for custom shields, an FTDI-based USB interface for stable programming, and robust DC input support from 7V to 15V. Whether you’re building IoT prototypes, robotics, embedded systems, or learning coding fundamentals, the Cytron UNO delivers reliability, ease of use, and full compatibility with the entire Arduino ecosystem. Features Powered by SMD ATmega328P with Optiboot (UNO R3) bootloader for fast programming. USB programming enabled by stable FTDI FT231X chip for improved reliability. Supports DC 7–15V input with upgraded onboard voltage regulator for higher output current. Offers 14 digital I/O pins, including 6 PWM outputs, and 6 analog inputs for versatile projects. Fully Arduino UNO R3 shield compatible with ISP header and broken-out SDA, SCL, IOREF pins. Uses USB Micro-B socket, compatible with standard Android phone cables. LEDs relocated to board edge for clear visibility during development. Includes additional 2.54mm pads for creating custom shields. White PCB design with clean layout and Cytron build quality. Dimensions

Waveshare 3.5inch Capacitive Touch LCD IPS Display Module 320×480 The Waveshare 3.5-inch Capacitive Touch LCD IPS Display Module is a compact yet powerful display solution featuring a 320 × 480 pixel resolution that delivers crisp visuals and excellent clarity. Designed with an IPS panel, it offers wide viewing angles and consistent color performance, making it ideal for graphical interfaces and interactive applications. The module integrates the ST7796S display driver for reliable display control and the FT6336U capacitive touch controller for accurate, multi-touch responsiveness. Optimized for embedded development, this 3.5 inch LCD Raspberry Pi display is perfectly suited for Raspberry Pi projects, control panels, and custom HMI applications where space, touch precision, and visual quality matter. Features: 320×480 resolution, 262K colors, clear and colorful displaying effect High touch screen transmittance, fast response and long lifetime Embedded with ST7796S driver chip and FT6336U capacitive touch control chip, using SPI and I2C communication respectively, minimizes required IO pins Onboard TF card slot for storing more pictures, videos, music, etc. Adapting 15PIN connector and 18PIN FPC slot for connecting the LCD module to the host board Onboard voltage translator, compatible with 3.3V / 5V operating voltage Comes with online development resources and manual (examples for Raspberry Pi / ESP32 / Raspberry Pi Pico / Arduino) SPI and I2C Control Interfaces: Pin Description 15PIN Pin No. 18PIN Pin No. VCC Power (3.3V / 5V input) 1 1 3V3 Power (3.3V input) 2 NC GND Ground 3 3 MISO SPI MISO pin 4 6 MOSI SPI MOSI pin 5 5 SCLK SPI CLK pin 6 4 SD_CS TF card chip selection, low active 7 10 LCD_CS LCD chip selection, low active 8 9 LCD_DC LCD data/command selection (high for data, low for command) 9 7 LCD_RST LCD reset pin, low active 10 8 LCD_BL LCD backlight pin 11 2 TP_SDA Touch panel data pin 12 14 TP_SCL Touch panel clock pin 13 13 TP_INT Touch panel interrupt pin 14 15 TP_RST Touch panel reset pin, low active 15 12

7Semi DC-DC Buck Converter 5V 3A Out - MP2338 (BO-10182) The 7Semi DC-DC Buck Converter 5V 3A Out – MP2338 (BO-10182) is a compact power module designed to step down higher DC voltages to a stable 5V output with up to 3A current. It provides reliable and efficient power for electronics that require a steady 5V supply, such as microcontrollers, sensors, and development boards. Built around the MP2338 step-down converter, this module offers high efficiency and stable performance while minimizing heat and power loss. It supports a wide input voltage range and includes built-in protection features for safe operation. Whether you’re working on embedded systems, IoT devices, or custom electronics projects, this buck converter makes power management simple and dependable. Features: Boosts power efficiency with a high-performance MP2338 buck converter Provides a stable 5V output at up to 3A for reliable powering Wide input voltage range, compatible with various DC sources Compact breakout module for easy PCB or project integration Built-in protection features for safe and stable operation Ideal for microcontrollers, sensors, IoT boards, and embedded systems

SmartElex VL53L5CX ToF Image Sensor The SmartElex VL53L5CX ToF Image Sensor is a compact, high-performance ToF Image Sensor designed for precise short-range distance sensing and spatial awareness. Based on ST’s advanced VL53L5CX chipset, this 64 pixel Time-of-Flight (ToF) 4 meter ranging sensor combines a SPAD array, infrared filters, and diffractive optical elements (DOE) to deliver consistent and accurate ranging even under challenging ambient lighting and different cover glass materials. It supports multizone distance measurements up to 4000 mm across all 64 zones with a wide 63° field-of-view, operating at up to 15 Hz. ST’s patented histogram algorithms enable reliable detection of multiple objects within the FoV while minimizing crosstalk beyond 60 cm. This short range ToF sensor is ideal for applications like 3D room mapping, robotics obstacle detection, gesture recognition, IoT systems, laser-assisted autofocus, and AR/VR enhancements. Note: The VL53L5CX is unique in that it requires firmware to be loaded via the I2C bus at power-on. Because this firmware is ~90k bytes, we recommend a microcontroller with enough storage to hold both the VL53L5CX firmware and your program code. Features: Model: VL53L5CX. Multizone ranging output with 4x4 or 8x8 independent zones. Up to 400 cm range 60 Hz frame rate capabilities. Operating voltage: 3.3 volts. I2C Address: 0x52. Emitter: 940 nm invisible light vertical cavity surface emitting laser (VCSEL), with integrated analog driver. Using diffractive optical elements (DOE) on both transmitter and receiver, the field of view is 63 degrees diagonally square.

SmartElex Soil Moisture Sensor The SmartElex Soil Moisture Sensor is a simple and efficient sensor module designed to measure the moisture content in soil for gardening, farming, and automation projects. It helps users detect water levels in soil and determine when plants need watering, making it ideal for students, hobbyists, educators, and engineers building smart irrigation or environmental monitoring systems. This soil moisture sensor module offers an easy way to collect data without complex circuit design, providing reliable readings for learning and experimentation. This sensor is commonly used in IoT farming projects, home gardening automation, greenhouse monitoring, and prototype irrigation setups where data-driven watering is required. It works smoothly with Arduino, Raspberry Pi, ESP32, and similar development boards, making integration and testing quick and beginner-friendly. With consistent performance and a user-friendly interface, the SmartElex Soil Moisture Sensor is a practical choice for DIY electronics, academic projects, and early-stage product development focused on smart agriculture and plant care solutions. Features: Measures soil moisture level for plant and irrigation monitoring Simple analog output for easy data reading and interpretation Works smoothly with Arduino, Raspberry Pi, and ESP32 boards Ideal for smart irrigation, gardening, and IoT-based agriculture Beginner-friendly design for quick setup and testing Suitable for DIY projects, classrooms, and agricultural prototypes

Cytron SHIELD-MD10 – 10A 7V–30V DC Motor Driver Shield for Arduino The Cytron SHIELD-MD10 is a high-performance 10A DC motor driver shield designed for Arduino and compatible development boards. Built specifically for brushed DC motors, it supports 7V–30V motor voltage and delivers up to 10A continuous current, making it ideal for robotics, automation, RC systems, DIY machines, and educational electronics. With solid-state MOSFETs and a fully NMOS H-Bridge design, the Cytron SHIELD-MD10 ensures efficient, fast, and reliable motor control without the need for a heatsink, helping creators achieve accurate speed and direction control with minimal wiring. Optimized for maximum compatibility, the shield stacks directly onto popular boards like Arduino UNO R3, Arduino Mega 2560, Maker UNO, Maker UNO Plus, Arduino Leonardo, CT-UNO, and CT-ARM. Featuring selectable digital pins for PWM and DIR, stackable headers, and regenerative braking, the Cytron SHIELD-MD10 offers unmatched flexibility for robotics and mechatronics projects. Whether you're building a DIY robot, conveyor system, or motorized prototype, this durable and high-current driver shield delivers smooth performance and long-lasting reliability. Features: Bi-directional control for one brushed DC motor with smooth speed and direction adjustment. Supports motor voltage from 7V–25V (Rev 1.0) and 7V–30V (Rev 2.0). Delivers 10A continuous and 15A peak current for high-torque applications. Uses fully solid-state components with NMOS H-Bridge for high efficiency. No heatsink required thanks to low-loss MOSFET design. Supports both 3.3V and 5V logic inputs, making it compatible with multiple controllers. Regenerative braking for safe and controlled stopping. Stackable pin headers allow adding more Arduino shields. Selectable digital pins for PWM and direction via jumpers. PWM frequency supported up to 10 kHz for fine speed control.

SmartElex BMM150 3 Axis Magnetometer Sensor The SmartElex BMM150 3 Axis Magnetometer Sensor is a compact digital sensor designed to measure magnetic fields along three axes. It helps users accurately detect orientation and heading, making it useful in projects where direction sensing and magnetic field measurement are required. This sensor is suitable for students, makers, engineers, educators, and startups working on embedded systems, learning projects, and prototype development that need reliable magnetic sensing in a small and easy-to-use form. This 3 axis magnetometer sensor is commonly used in robotics, IoT devices, navigation systems, and automation projects that require compass functionality or motion awareness. It can be easily integrated with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing smooth data communication and quick setup. The stable performance and simple interfacing make it ideal for applications like robot navigation, electronic compasses, orientation tracking, and smart sensor-based systems Note - The default configuration of module is I2C interface, for SPI interface remove I2C smd jumper & short SPI smd jumper on module. Features: Measures magnetic field strength along three axes (X, Y, and Z) Enables accurate heading and orientation detection Digital output for easy interfacing with microcontrollers Low power operation suitable for battery-powered projects Compact sensor design for space-constrained applications Compatible with Arduino, Raspberry Pi, ESP32, and other development boards

7Semi MMC5983MA 3-axis Mini Magnetometer Sensor Breakout Module The 7Semi MMC5983MA 3-axis Mini Magnetometer Sensor Breakout Module is a high-precision magnetic sensor designed to measure magnetic fields along three axes with excellent accuracy and stability. It supports a magnetic field range of ±8 Gauss, delivering ultra-low noise and high-resolution output for reliable data. Communicating through a standard I2C interface, this magnetometer sensor ensures low power operation and fast response, making it ideal for navigation systems, orientation tracking, digital compasses, and magnetic anomaly detection. Its compact form factor allows seamless integration into space-constrained electronics, IoT devices, and embedded applications where precise magnetic sensing is essential. Features: Triple-Axis Magnetic Sensing provides great precision across three axes, with 0.4mG resolution and ±0.5° heading accuracy. High Dynamic Range and Resolution: ±8G FSR, 18-bit operation for precise measurements. Built-in Degaussing Circuitry: Effectively eliminates residual magnetization, ensuring consistent performance even when exposed to high external magnetic fields. Advanced Compensation Features: On-chip sensitivity and temperature compensation ensure consistent readings under changing situations. Fast I2C Communication: The I2C protocol has a fast mode of up to 400KHz, allowing for easy integration with other devices. The energy-efficient design consumes only 1µA during power down, making it excellent for power-sensitive applications. Compact form factor: A small PCB layout with a horizontal 4-pin 2mm pitch JST connection, ideal for space-constrained applications.

7Semi DS18B20 2M Cable Waterproof Digital Temperature Probe The 7Semi DS18B20 2M Cable Waterproof Digital Temperature Probe is built for anyone who needs precise and stable temperature monitoring in challenging environments. With its stainless-steel sealed casing and durable 2-meter cable, this sensor delivers highly accurate readings, even when fully submerged or installed in remote locations. Whether you're monitoring aquaponics systems, greenhouse conditions, or industrial temperature processes, this digital probe ensures you get consistent and reliable data every single time. Designed with a simple 1-Wire digital interface, the DS18B20 works seamlessly with Arduino, Raspberry Pi, ESP boards, and other microcontrollers, making it ideal for hobbyists, engineers, and automation enthusiasts. Its long cable, waterproof build, and wide temperature range make it a versatile choice for environmental monitoring and precision-driven applications where stability and robustness matter the most. Features: Measures temperatures from –55°C to +125°C, making it suitable for industrial, environmental, and underwater applications. Provides ±0.5°C accuracy, ensuring stable and trustworthy readings. Fully waterproof stainless-steel enclosure protects against moisture, corrosion, and rugged terrain. Comes with a 2-meter high-strength cable to support remote, underwater, or difficult-to-access installations. Supports 9–12 bit resolution and easily integrates using its 3-wire connection and 1-Wire digital protocol.

Cytron SHIELD-3AMOTOR 1.2A Dual Channel 7V–30V DC Motor Driver Shield for Arduino The Cytron SHIELD-3AMOTOR is a high-performance, dual-channel DC motor driver shield designed for Arduino users who need reliable and efficient motor control. Supporting motor voltages from 7V to 30V and delivering up to 3A peak and 1.2A continuous current per channel, this shield is ideal for robotics, automation, DIY RC vehicles, and mechatronics projects. Its compatibility with Arduino UNO, Mega, Leonardo, Zero, 101, and other popular boards makes it a plug-and-play solution for both beginners and advanced makers searching for powerful motor-driving capabilities. Built using the DRV8871 motor driver IC, the Cytron SHIELD-3AMOTOR supports both Signed Magnitude and Locked Anti-Phase control modes via an easy DIP switch selector. Additional features such as current limit protection, stackable headers, quick-test pushbuttons, and direct connectors for the LSS05 auto-calibrating line sensor make this shield perfect for building reliable robot platforms, line-followers, and dual-motor systems. With strong motor handling and seamless Arduino integration, this Cytron shield makes high-current motor control simple, safe, and efficient. Features: Dual-channel brushed DC motor driver shield designed for full Arduino compatibility. Supports 7V–30V motor voltage, suitable for a wide range of DC motors. Handles 3A peak and 1.2A continuous current per channel, ideal for medium-power robotic applications. Built-in current limit protection for safer motor operation. Compatible with 3.3V and 5V logic input, supporting various Arduino boards. DRV8871 IC ensures smooth, efficient, and reliable motor control. Selectable control modes: Signed Magnitude and Locked Anti-Phase via DIP switches. Stackable header pins for easy integration with additional shields. Quick-test switches provided for rapid motor testing on both channels. Includes dedicated connector for Cytron LSS05 Line Sensor, ideal for line-following robots. (Note: No polarity protection for motor supply input - connect with care.)

SmartElex LIS3DH Triple Axis Accelerometer Breakout The SmartElex LIS3DH Triple Axis Accelerometer Breakout is a compact motion sensor module designed to measure acceleration along the X, Y, and Z axes. It helps users detect tilt, vibration, movement, and orientation, making it ideal for students, makers, educators, and engineers working on motion-responsive electronics. This lis3dh accelerometer offers a beginner-friendly way to collect movement data without complex circuitry, allowing users to focus on learning, building prototypes, or integrating sensors into real-world applications. This 3-axis accelerometer sensor is commonly used in robotics, handheld electronics, IoT devices, gesture recognition systems, and automation projects that require accurate motion sensing. It integrates smoothly with Arduino, Raspberry Pi, ESP32, and other microcontroller platforms, making programming and hardware connections straightforward. With reliable output and easy compatibility, the SmartElex LIS3DH sensor is a practical choice for prototyping, academic learning, DIY electronic builds, and product development where consistent acceleration measurement is required. Features: Triple-axis accelerometer for detecting movement and orientation Measures acceleration along X, Y, and Z axes with reliable output Compact breakout board for easy integration in embedded projects Compatible with Arduino, Raspberry Pi, ESP32, and similar platforms Ideal for robotics, IoT devices, gesture control, and automation projects Great for prototyping, STEM education, and motion-based product development

7Semi BME680 Temperature, Humidity, Pressure & Air Quality Sensor Breakout with Qwiic Interface The 7Semi BME680 Environmental Sensor Breakout is a compact yet powerful module designed for applications that require accurate measurement of temperature, humidity, pressure, and indoor air quality. Built around the trusted Bosch BME680 sensor, it provides dependable multi-parameter environmental data in real time, making it ideal for IoT projects, smart home automation systems, and portable environmental monitoring devices. Its efficient gas sensor intelligently detects VOC levels, helping you assess indoor air quality with ease. Engineered for universal compatibility, this breakout includes both a voltage regulator and level shifter, enabling seamless integration with 3.3V and 5V microcontroller platforms such as Arduino and Raspberry Pi. The Qwiic connector and I2C/SPI support ensure quick setup without messy wiring, while its compact size makes it perfect for wearables and space-constrained builds. With low-power operation, stable readings, and selectable I2C addresses, this module provides developers with a simple and reliable way to enhance environmental sensing in modern embedded projects. Features: Provides accurate measurement of temperature, humidity, pressure, and VOC-based air quality, making it an all-in-one environmental sensor solution. Supports I2C and SPI communication, ensuring smooth integration with Raspberry Pi, Arduino, ESP32, and other development boards. Includes selectable I2C addresses (0x76/0x77) to allow multiple sensors on a single bus without conflicts. Features a built-in voltage regulator and level shifting circuitry, allowing safe use with both 3.3V and 5V systems. Designed with low power consumption, suitable for long-term, battery-powered, or portable applications. Comes in a compact 19×19 mm breakout form factor, perfect for handheld devices, IoT wearables, and mini weather stations. Provides stable VOC readings after a short burn-in time, ensuring reliable indoor air quality measurements.