SmartElex Multiplexer USB/TTL/RS232/RS485 Communication Converter

Cytron Maker Pi RP2040 – Robotics Controller Board with Raspberry Pi The Cytron Maker Pi RP2040 is a compact, beginner-friendly robotics controller board powered by the Raspberry Pi RP2040 microcontroller. Designed for DIY robotics, automation, and motion-control projects, this board integrates a dual-channel DC motor driver, four servo ports, and seven Grove connectors - giving makers everything they need to build robots without complex wiring. With compatibility across CircuitPython, MicroPython, C/C++, and even the Arduino ecosystem, this board ranks among the best RP2040 robotics controllers for students, hobbyists, and educators. Built for convenience, the Maker Pi RP2040 supports multiple power input options (USB, LiPo battery, or VIN), includes onboard functional test buttons, and features status LEDs for easy debugging. The preloaded demo code lets you start controlling motors, playing melodies, and testing GPIOs right out of the box. Whether you are exploring Raspberry Pi’s RP2040 ecosystem or building an advanced robot, the Cytron Maker Pi RP2040 robot controller offers exceptional versatility, ease of use, and reliable motor-driving performance. Features: Powered by the Raspberry Pi RP2040 dual-core Arm Cortex-M0+ processor. Includes dual-channel DC motor driver and four servo motor ports for robotics. Seven Grove ports support digital, analog, I2C, SPI, and UART expansion. Preloaded with CircuitPython for easy plug-and-play coding. Supports USB 5V, LiPo 1-cell battery, or 3.6–6V VIN input with automatic switching. Built-in LiPo charging circuit with safety protections. Onboard piezo buzzer, RGB LEDs, GPIO test LEDs, and push buttons. Quick-test buttons and motor output LEDs for immediate motor testing. Fully compatible with the Raspberry Pi Pico ecosystem, MicroPython, C/C++, and Arduino cores. Includes LEGO-compatible mounting holes and M3 mounting points. Board Layout: Dimension:

Cytron Maker UNO Plus – Arduino-Compatible Educational Board The Cytron Maker UNO Plus is a beginner-friendly, Arduino-compatible development board designed to simplify electronics and coding for students, educators, and STEM hobbyists. With onboard LEDs, a built-in piezo buzzer, a programmable pushbutton, and upgraded components, this board removes wiring complexity allowing learners to focus on coding, debugging, and hands-on exploration. Whether used for school projects, robotics, or microcontroller education, the Cytron Maker UNO Plus ensures a smooth and frustration-free learning experience. Thanks to its pre-labeled pin headers, Micro USB connectivity, and fully Arduino-compatible architecture, setup becomes effortless for new users. Students can instantly code and visualize real-time pin activity through indicator LEDs, making debugging easier and more intuitive. The Cytron Maker UNO Plus is ideal for classroom teaching, STEM labs, maker workshops, and hobby projects, helping learners jump straight into creating fun electronics projects like light sequences, melodies, and interactive displays. Features: Fully compatible with Arduino ecosystem, sharing all libraries and example codes. Integrated 12× onboard LEDs for simplified debugging and visual learning. Built-in piezo buzzer and programmable pushbutton for interactive projects without extra wiring. Upgraded 3.3V line provides 500mA output to support more sensors and modules. Micro USB interface replaces bulky USB Type-B for universal connectivity. Uses FT231X USB-to-Serial converter for easier and more reliable driver installation. Includes pin-header label stickers for effortless classroom identification. CE, FCC & RoHS compliant - safe, environmentally friendly, and education-ready. Students can write their names directly on the board to avoid mix-ups.

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

SmartElex RS-485 (SP3485) Transceiver Breakout Module The SmartElex RS-485 (SP3485) Transceiver Breakout Module is a compact and reliable solution for enabling RS485 module based communication in electronics and automation projects. Designed to simplify long-distance and noise-resistant data transfer, it helps overcome the limitations of standard serial communication in industrial and field environments. This module is ideal for students, hobbyists, engineers, educators, and startups working on projects that require stable, differential signal communication for robotics, industrial controls, or embedded systems. With support for rs485 transceiver based networking, this board makes it easy to add rs485 communication to microcontrollers and development boards like Arduino, Raspberry Pi, and ESP32. Its breakout form factor allows quick integration into prototypes, IoT setups, and automation systems where devices need to communicate over long cables and noisy electrical environments. Whether used for sensor networks, building management systems, or PLC interfacing, it offers dependable performance that helps users build scalable and robust communication links without unnecessary complexity. Features: Enables RS485 module communication for long-distance, noise-resistant data transfer Based on the SP3485 transceiver for stable rs485 transceiver performance Supports differential signal communication ideal for industrial and field environments Easy-to-use breakout format for quick prototyping and integration Works with popular controllers such as Arduino, Raspberry Pi, and ESP32 Helps implement multi-node networks over twisted pair cabling Compact design suitable for compact robotics, IoT, and automation projects Provides reliable rs485 communication without complex wiring or circuitry

SmartElex BX604 PIR Motion Sensor Module The SmartElex BX604 PIR Motion Sensor Module is a passive infrared motion detection solution designed to sense human movement by detecting changes in infrared radiation. It helps automate electronic systems by triggering actions only when motion is present, improving efficiency and reducing unnecessary power usage. This module is suitable for students, makers, engineers, educators, and startups who need a dependable motion sensing solution for electronics projects, learning kits, and prototype development. This PIR motion sensor module is widely used in robotics, IoT applications, security systems, and home or industrial automation projects where accurate motion detection is required. It can be easily interfaced with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick integration into working systems. The wide detection coverage and stable performance make it ideal for applications like motion-activated lighting, alarm systems, smart monitoring devices, and interactive electronic projects. Features: Passive infrared (PIR) sensor for reliable human motion detection Detects movement by sensing changes in infrared radiation Wide detection angle for broader area coverage Long sensing range suitable for security and automation use Low power consumption for battery-operated projects Compatible with Arduino, Raspberry Pi, ESP32, and similar boards

SmartElex 12V 3A Single Channel Signal Relay Module The SmartElex 12V 3A Single Channel Signal Relay Module is a compact and reliable solution for switching electrical loads using low-power control signals. It allows users to safely control higher-voltage or higher-current devices without direct electrical contact, making it ideal for protecting sensitive control circuits. This module is suitable for students, makers, engineers, educators, and startups who are working on embedded systems, control projects, or automation prototypes that require dependable on-off switching. This single channel relay module is well suited for robotics, IoT systems, home and industrial automation, and general prototyping applications. It can be easily interfaced with popular platforms such as Arduino, Raspberry Pi, and ESP32 to control lights, motors, solenoids, alarms, or other external devices. The simple interface and consistent performance make it easy to integrate into both experimental setups and final products, helping users build reliable control systems with minimal effort. Features: Single channel relay module for switching external loads using low-power control signals Operates on 12V, suitable for industrial and automation environments Supports up to 3A load current for controlling common electrical devices Electrical isolation between control side and load side for added safety Compatible with Arduino, Raspberry Pi, ESP32, and other microcontrollers Compact and easy-to-integrate design for projects and prototyping

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

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.

Cytron 8-Channel RC Servo Controller Shield – 5V 5A Regulated Power for Arduino The Cytron 8-Channel RC Servo Controller Shield is designed for makers, robotics enthusiasts, and educators who need reliable, high-power servo control for Arduino projects. With its built-in 5V 5A switching regulator, this servo shield eliminates the usual power limitations that come with driving multiple RC servos. It seamlessly works with popular Arduino boards like Arduino UNO, Mega, CT-UNO, and more - making it an ideal solution for robotics, animatronics, humanoid robots, and automation systems. Keywords naturally included: Arduino servo shield, RC servo controller, 8-channel servo driver, robotics servo control. This shield allows you to control eight independent RC servos simultaneously, offering precise position and speed control using a simple UART interface. Each channel supports a wide 0.5ms–2.5ms pulse range, enabling full 180° servo rotation control for most RC servos. Whether you're building robotic arms, walking robots, pan-tilt systems, or classroom STEM models, this Cytron servo controller shield ensures smooth servo movements, stable power delivery, and user-friendly integration with Arduino. Features: Supports 8 independent RC servo channels, allowing simultaneous multi-servo control for robotics and automation projects. Built-in 5V/5A peak (4A continuous) switching regulator, enabling safe and stable servo operation without an external power module. Wide input voltage range from 7V to 25V, making it compatible with most robot power systems. Offers UART control (UC00A/UC00C and others supported), enabling activation, speed control, positioning, and optional position reporting. Generates precise servo pulses from 0.5ms to 2.5ms with a resolution of 0.25 µs for smooth and accurate motion. Fully compatible with Arduino logic level (5V) and supports Arduino UNO, Mega, CT-UNO, CT-ARM, etc. Stores UART baud rate in non-volatile memory (default 9600). Includes independent startup position command for each channel.

SmartElex 10A 5V 1-Channel Relay Module The SmartElex 10A 5V 1-Channel Relay Module is a compact and dependable low level trigger relay module designed to control high-power devices using low-voltage microcontrollers. Operating at 5V DC, this single channel relay module features an SPDT relay rated for 10A at 250VAC, making it suitable for switching lights, motors, pumps, and other appliances. Its isolated input circuitry helps protect sensitive control boards from voltage spikes, while the onboard pull-down circuit prevents false triggering during startup. With a clear power indicator and secure mounting design, this 5V Relay Module delivers safe, stable, and long-lasting performance for home automation, industrial control, and DIY electronics projects. Features: A single-channel relay module with SPDT setup Supports up to 10A at 250 VAC for high-current applications. High-level trigger for dependable control. Compatible with a wide range of microcontrollers, including Arduino, AVR, PIC, and ARM. Isolated inputs to protect sensitive control circuitry. Contains a pull-down circuit to avoid inadvertent activation. Power supply indicator for rapid status checks. complies with international safety standards Convenient installation with four mounting holes.

SmartElex 5V 3A 4 Channel Signal Relay Module The SmartElex 5V 3A 4 Channel Signal Relay Module is a compact and reliable 4 Channel Relay Module designed to control four independent medium-power loads with precision. Powered as a 5V relay module, it integrates high-quality JY4100F-S-DC5V-C relays, each capable of switching up to 3A at 120V AC or 24V DC. With dedicated trigger inputs and LED status indicators for every channel, it allows easy monitoring and accurate switching. This module directly interfaces with popular microcontrollers such as Arduino, ESP8266, and Raspberry Pi, making it ideal for IoT, home automation, and embedded control applications where safety, isolation, and consistent performance are essential. Applications: Home automation (controlled lights, fans, and locks) Industrial machine control IoT multi-device projects. Robotics and Motor Control Security systems and alarms. Cautions: Always utilize a properly regulated 5V power supply. Avoid exceeding the rated load capacity. Provide proper isolation for AC loads. Store the module in a dry, clean place. Features: Four-channel relay module allows for independent control of four devices. Operates at 5V DC and has an active LOW/HIGH trigger. Each relay can handle up to 3A at 120V AC or 24V DC. Compatible with Arduino, ESP8266, Raspberry Pi, and more platforms. Each channel has its own set of LED indicators. Fast switching: ≤10 ms operation and ≤5 ms release time. Low contact resistance (≤100 mΩ) ensures effective operation. The total power consumption is around 1.44W over four channels. High insulation resistance and dielectric strength are essential for safety. Wide operational temperature range (-40°C to +85°C).

Radiolink FPV Mobile Phone Holder Stand Folding Mount for RC4GS V3/V2 & RC6GS V3/V2 Controllers The Radiolink FPV Display Monitor Screen Holder is designed to securely hold mobile phones or FPV display screens on your RC controller. Simply insert the mount into the controller’s 1/4” (M6) thread hole, place your phone or monitor on the holder, and adjust the angle using the 360° rotating ball head. This makes it easy to achieve the perfect viewing position while flying, whether indoors or outdoors. This foldable and lightweight holder extends from 5.5cm to 9cm, supporting FPV monitors up to 4.3 inches and mobile phones up to 6.8 inches. Compatible with Radiolink RC4GS V2/V3, RC6GS V2/V3, and other devices with a standard thread hole, it is made of durable plastic and metal to withstand impact. Weighing only 105g, it is easy to install, remove, and carry, making it a reliable accessory for FPV enthusiasts. Features: Holds mobile phones or FPV display monitors securely 360° adjustable ball head for optimal viewing angles Extendable from 5.5cm to 9cm Supports FPV monitors up to 4.3 inches and phones up to 6.8 inches Compatible with Radiolink RC4GS V2/V3, RC6GS V2/V3, and devices with 1/4” (M6) thread hole Lightweight and durable, made of plastic and metal Easy to install, remove, and carry

SmartElex 12V 20A Single Channel Power Relay Module The SmartElex 12V 20A Single Channel Power Relay Module is a high-current switching solution designed to control heavy electrical loads using low-voltage control signals. It helps safely operate high-power devices without directly exposing microcontrollers or control circuits to high current, reducing risk and improving system reliability. This module is suitable for students, makers, engineers, educators, and startups who are working on power control, automation, or embedded electronics projects that demand robust switching capability. This single channel power relay module is ideal for robotics, IoT systems, home and industrial automation, and power management applications where devices such as motors, heaters, pumps, or high-load appliances need reliable control. It can be easily interfaced with popular platforms like Arduino, Raspberry Pi, and ESP32, making it convenient for both prototyping and deployment. The strong build quality and straightforward integration make it a dependable choice for projects requiring consistent and safe high-current switching. Features: Single channel power relay module for high-current load control Operates on 12V, suitable for industrial and automation systems Supports heavy load switching up to 20A Electrical isolation between control and power circuits for safety Compatible with Arduino, Raspberry Pi, ESP32, and similar controllers Robust design for reliable operation in power control applications

Official Arduino UNO Q SBC 4GB ABX00173 The Arduino UNO Q SBC 4GB ABX00173 is a powerful and humanized dual-brain development platform designed to seamlessly bridge high-performance computing with real-time control. Featuring a Linux® Debian-capable Qualcomm® Dragonwing™ QRB2210 microprocessor alongside a real-time STM32U585 microcontroller (MCU), this 4GB variant delivers enhanced memory capacity for demanding AI-driven applications. Whether you're building systems for object recognition, voice commands, motion detection, or other intelligent edge applications, the Arduino UNO Q 4GB provides the perfect balance between a full-fledged single-board computer and precise microcontroller control. It’s not just Arduino—it’s a complete innovation platform ready to power your next advanced project. This edition of Arduino UNO Q has 4 GB of RAM and 32 GB of eMMC, making it the best choice if: You plan to use UNO Q in single-board computer (SBC) mode. Your application requires numerous high-level processes to execute at the same time. You intend to use larger, more complex AI or machine learning models (such as high-resolution computer vision or advanced audio processing). You'll need enough of built-in storage for logs and data, as well as a strong development environment. The Arduino UNO Q is the ideal tool for prototyping your next robotics or IoT project because: All-in-One Toolbox: The Arduino UNO Q is a versatile tool that combines the Dragonwing™ QRB2210 microprocessor (MPU) with a real-time STM32U585 microcontroller (MCU), making it ideal for any project. AI in a blink: Discover AI-powered vision and sound solutions that respond to their surroundings. Millions of Arduino users have created libraries, sketches, and projects for the UNO ecosystem. Compatible with the Arduino UNO ecosystem: UNO Q is compatible with a wide range of Arduino hardware, including old UNO shields and new carriers, as well as Modulino® nodes and third-party modules via the Qwiic connector. Streamlined software experience: In addition to the Arduino IDE and Arduino Cloud, you can get started with a plethora of pre-built examples and AI models available through Arduino App Lab. Seamless, unified development: create classic Arduino Sketches, code in Python® using the pre-installed Linux® Debian OS, or combine the two from a single interface - easy with Arduino App Lab. What is the Arduino App Lab? Unified Developer Experience App Lab is a brand-new comprehensive development environment that unifies the journey from Linux® to real-time OS. Preloaded on the UNO Q, App Lab combines Arduino Sketches, Python® scripts, and containerized AI models to create fully integrated applications that can be administered from a single interface. Ready-to-use Apps and Bricks Get started quickly with Arduino Apps, self-contained examples that include everything you need. Add plug-and-play capabilities to your projects using pre-built Bricks to help you push your ideas even further. Pre-loaded AI models With pre-loaded AI models in Arduino App Lab, you can use real-world data for a variety of tasks, including object/human detection, anomaly detection, image categorization, sound recognition, and keyword spotting. Find out more in the official documentation . Features: Microprocessor: Qualcomm® Dragonwing™ QRB2210 Microcontroller: Real-time, low-power STM32U585 MCU RAM: 4 GB LPDDR4 Storage: 32 GB eMMC built-in (no SD card required) Connectivity: Dual-band Wi-Fi® 5 (2.4/5 GHz), Bluetooth® 5.1 High-speed headers: Power advanced peripherals – vision, audio, display Classic UNO headers: Mount shields to add capabilities LED matrix: 8 x 13 LED matrix for visual creation and feedback USB-C connector: Power delivery, video output, or connect keyboard, mouse, USB microphones or USB cameras via dongle Qwiic connector: Expand easily with Modulino® nodes – no soldering required

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