DFRobot 5A DC-DC Buck Boost Converter Module The DC-DC Buck Boost Converter Module (5A) is a versatile power supply solution that can both step up and step down voltage as needed. With an input voltage range of 5V to 32V and adjustable output from 1V to 30V, this module handles a wide variety of power conversion needs for your electronics projects. The converter delivers a stable 5A continuous output current with excellent voltage regulation, making it ideal for powering microcontrollers, sensors, motors, and other devices that require consistent power. The module features synchronous rectification technology that achieves high efficiency up to 95%, reducing energy waste and heat generation during operation. This Buck Boost Converter Module comes with comprehensive protection mechanisms to safeguard your valuable electronics. It includes over-temperature protection, input under-voltage protection, and output over-current protection, ensuring safe and reliable operation even under challenging conditions. The module is designed with user-friendly features like an onboard potentiometer for easy voltage adjustment and an LED indicator that shows working status. With its compact size of 55×38×15mm and pre-soldered 2.54mm pin headers, this converter module is perfect for students and hobbyists working with Arduino boards, Raspberry Pi, robotics projects, or any application requiring stable and adjustable power supply. Pinout Details Input+ Input- Output+ Output- Output Indicator Output Voltage Regulation Features Input voltage range: 5V to 32V DC Output voltage range: 1V to 30V DC (adjustable via potentiometer) Maximum output current: 5A continuous Conversion efficiency: Up to 95% with synchronous rectification Built-in protection: Over-temperature, input under-voltage, output over-current Compact dimensions: 55×38×15mm with mounting holes Operating temperature range: -40°C to +85°C Applications Industrial Power Supply DIY Smart Power Supply Embedded System Power Supply

DFRobot Bluetooth 5.0 Audio Receiver Board The Bluetooth 5.0 Audio Receiver Board is a compact and cost-effective solution for adding wireless capabilities to your existing speakers. This versatile Bluetooth audio receiver allows you to easily transform any old speaker system into a modern wireless setup without complicated wiring or expensive replacements. The module features the latest Bluetooth 5.0 technology, ensuring stable connections and quality audio transmission up to 15 meters in visible range. With its automatic reconnect function, you won't need to repeatedly pair your devices - once connected, the module remembers your device for future use. The board can be powered either through a micro-USB connection or a 3.7V lithium battery, giving you flexibility in how you install and use this wireless speaker converter. What makes this Bluetooth 5.0 adapter particularly valuable is its dual functionality. Beyond serving as a wireless audio receiver, it can also function as a computer sound card. By simply short-circuiting the Sound Card pads on the back of the module and connecting it to a computer via USB cable, you can use it as a USB sound card module - perfect for computers with damaged audio outputs or for adding an extra audio interface. The operation is straightforward: after powering on, the blue indicator flashes as the module enters Bluetooth mode and plays an audio prompt while waiting for pairing. Your phone will detect the module as "BT5.0-Audio," and once connected, the indicator remains solid when idle and blinks slowly during music playback. Features: Power supply options: micro-USB or 3.7V lithium battery for flexible installation. Bluetooth version: 5.0 with automatic reconnect function for stable connections. Transmission distance: 15 meters in visible range for wide coverage. Audio decoding support: WAV, APE, FLAC, and MP3 formats. Dual functionality: works as both Bluetooth receiver and computer sound card. Clear connection status indication through LED light patterns. Compact size for easy integration into existing audio systems.

DFRobot Bluno Beetle BLE V1.1 Based on Arduino Uno with Bluetooth 4.0 The Beetle BLE (formerly known as Bluno Beetle) is an ultra-compact miniature Arduino board based on the Arduino Uno with integrated Bluetooth 4.0 (BLE) functionality. This tiny powerhouse combines the familiar Arduino programming experience with wireless capabilities, making it perfect for DIY projects, educational purposes, and wearable electronics applications. The development board can be programmed through its micro USB port using the standard Arduino IDE without any extra libraries or drivers, and it also supports wireless programming via Bluetooth. With its V-shaped gold-plated I/O interfaces, you can easily connect wires without soldering, making it especially useful for creating smart bracelets, clothing, and other wearable devices. This versatile Bluetooth 4.0 microcontroller is fully compatible with Bluno series commands and procedures, supporting both Bluetooth HID and iBeacon modes. The Play Bluno app, available for both iOS and Android, gives you quick access to this tiny board for remote control and wireless program updates. Despite its small size, the Beetle BLE packs impressive features including an ATmega328 microcontroller running at 16MHz, four digital pins, four analog pins, two PWM outputs, and both UART and I2C interfaces. For students and makers on a budget, this compact BLE development board offers an affordable solution for creating wireless projects without sacrificing functionality. Whether you're building a smart device, working on an e-textile project, or teaching electronics, the Beetle BLE delivers big performance in a tiny package. Features ATmega328 microcontroller running at 16MHz for reliable performance Bluetooth 4.0 (BLE) with CC2540 chip and -93dBm sensitivity Maximum wireless range of 50 meters in open field conditions Operating voltage of 5V DC with input voltage less than 8V Four digital pins and four analog pins for connecting various components Two PWM outputs for motor control and other applications Includes UART, I2C, and micro USB interfaces for versatile connectivity

DFRobot DC to DC USB Fast Charging Module 6~32V to 5V/3A The DFRobot DC to DC USB Fast Charging Module is a high-efficiency DC to DC converter that transforms 6–32V input into a stable 5V/3A USB output. Designed as a versatile USB fast charging module, it integrates smart charge recognition, making it compatible with over 99% of smartphones and USB-powered devices. This intelligent feature enables the module to deliver peak charging current, dramatically reducing charge time. With consistent voltage output, this 5V 3A power module is ideal for mobile fast charging projects, DIY power supplies, car charging retrofits, and solar charging systems. Diagram Features Small in size, easy to integrate into compact projects Supports multiple fast-charging protocols for wide device compatibility Provides stable USB output for reliable performance Can function as both a charging module and a power supply unit

DFRobot Embedded Serial to Ethernet Module based on ESP32 Series The Embedded Serial to Ethernet Module is a versatile gateway based on the powerful ESP32 series that simplifies connecting your serial devices to networks. This module comes with an optimized TCP/IP protocol stack that makes it easy to add networking capabilities to your embedded projects while saving development time and costs. The heart of this module is the ESP32 system-on-chip that combines 2.4GHz WiFi and Bluetooth dual-mode connectivity with exceptional performance, stability, and remarkably low power consumption. Whether you're a student working on an IoT project or a shop owner looking to offer smart connectivity solutions, this module provides an accessible way to bridge traditional serial devices with modern networking. This IoT communication module offers impressive versatility with four working modes (TCP Server, TCP Client, UDP Server, and UDP Client) and supports six different data transparent transmission modes. It allows you to create powerful connections between serial ports, WiFi, Ethernet, and Bluetooth interfaces in various combinations. The module excels in practical applications like smart agriculture, where it can collect and transmit data from sensors measuring air temperature, humidity, soil conditions, pH values, and carbon dioxide levels directly to a server. With its abundant IO ports, the module can also control ventilation and heating equipment based on temperature readings. This makes it an ideal solution for anyone looking to implement ESP32 gateway functionality in IoT scenarios without dealing with complex networking protocols. Note: The applicable temperature of the product is -20°C~+70°C Features Based on ESP32 series with integrated 2.4GHz WiFi and Bluetooth dual-mode Supports four working modes: TCP Server, TCP Client, UDP Server, and UDP Client Offers six different data transparent transmission modes for flexible connectivity Connects to the Internet or local networks through router with TCP/UDP connections Collects and transmits data from various environmental sensors to servers Provides abundant IO ports for temperature monitoring and equipment control Operates reliably in temperature range from -20°C to +70°C

DFRobot Gravity Analog Current to Voltage Converter (for 4~20mA Application) The Gravity: Analog Current to Voltage Converter is a versatile module designed to bridge the gap between industrial equipment and hobbyist electronics. This current to voltage converter linearly transforms 0-25mA current signals into 0-3V voltage outputs that can be easily read by microcontrollers like Arduino. Industrial sensors and devices typically output 4-20mA current signals, which standard microcontrollers cannot directly interpret. This industrial sensor interface module solves that problem by converting these signals into voltage readings that any analog input pin can process. The module's wide detection range of 0-25mA makes it particularly useful for fault diagnosis (below 4mA) and overrun detection (above 20mA) applications. What makes this 4-20mA signal converter stand out is its combination of high precision and ease of use. The module uses a 0.1% high-precision sense resistor paired with an ultra-low noise rail-to-rail zero-drift operational amplifier, ensuring accurate readings without requiring calibration. With measurement accuracy of ±0.5% at 16-bit ADC resolution, this module delivers reliable data for critical applications. The wide supply voltage range of 3.3V to 5.5V ensures compatibility with various development boards, while the standard Gravity 3-pin interface makes connections simple and straightforward. Whether you're working on Arduino current measurement projects, industrial automation, or sensor integration, this converter provides a reliable bridge between industrial standards and DIY electronics. Features: Supply Voltage: 3.3~5.5V for compatibility with various microcontrollers. Detection Range: 0~25mA DC for comprehensive current monitoring. Measurement Accuracy: ±0.5% F.S. @ 16-bit ADC, ±2% F.S. @ 10-bit ADC. Termination Resistance: 120? for standard current loop applications. Connector Type: PH2.0-3P for easy plug-and-play connection. Product Size: 30mm × 22mm (1.18inch × 0.87inch) compact design. Linear conversion from current to voltage without requiring calibration

DFRobot M.2 (A+E Key) to Gigabit Ethernet Module for LattePanda Alpha and Delta The M.2 (A+E Key) to Gigabit Ethernet Module for LattePanda Alpha and Delta (FIT0798) is a versatile M.2 network module designed to add RJ45 Gigabit Ethernet functionality through the M.2 slot of your LattePanda controller. This high-performance Gigabit Ethernet adapter supports both IEEE 802.3u standard 10/100Mbps Ethernet and IEEE 802.3ab standard 1000Mbps Ethernet, making it compatible with various network environments. The module features an automatic auxiliary power detection function that automatically configures the relevant bits of the PCI power supply management register in the PCI configuration space. This intelligent feature ensures optimal power management while providing reliable network connectivity for your projects and applications. Built around the Realtek RTL8111F chip, this LattePanda expansion card delivers superior performance with higher data transmission rates and lower power consumption compared to standard network adapters. The module offers excellent stability and compatibility, with the M.2 interface providing transmission speeds up to 2.5Gb/s, while the gigabit network interface supports 10/100/1000Mbps self-adaptive data rates. With its plug-and-play functionality, fast data transmission, and convenient connection options, this RJ45 port converter is particularly well-suited for LattePanda users looking to convert their M.2 slot into a Gigabit Ethernet interface. Whether you need network port expansion or want to implement soft routing capabilities, this module provides a simple and effective solution for enhancing your LattePanda's connectivity options. Features Applicable Network Type: Fast Ethernet with 10/100/1000Mbps self-adaptive transmission rate. Interface: NGFF (M2) Key A+E for direct connection to compatible LattePanda boards. Network Interface: Standard RJ45 port for universal network connectivity. Main Chip: Realtek RTL8111F for reliable and efficient performance. Transmission Rate: M.2 interface at 2.5Gb/s for high-speed data transfer. Plug-and-play design for easy installation without additional drivers. Compact size for space-efficient integration with your LattePanda system.

DFRobot MP2636 Power Booster & Charger Module The MP2636 Power Booster & Charger Module is a compact and versatile power management solution designed specifically for battery-powered projects. This all-in-one module combines a lithium battery charger, power path management, and a 5V boost converter in a single board measuring just 27.8×17.8mm. Perfect for students working on portable electronics or renewable energy projects, it supports charging from various sources including solar panels (0.3W-3W), USB power, or any DC source between 2.75V and 5.5V. The module features a stable 5V USB output that can deliver up to 1A current, making it ideal for powering microcontrollers, sensors, or even charging mobile devices. What makes this module particularly valuable for electronics enthusiasts is its comprehensive protection system and intelligent power management. The MP2636 chip automatically handles power path management, allowing simultaneous battery charging and system operation. It includes protection against overcharging, over-discharging, short circuits, and reverse polarity connection, ensuring your batteries and connected devices remain safe. The onboard status LEDs provide clear visual indicators for charging status and power output, making it easy to monitor system operation. Whether you're building a solar-powered weather station, a portable power bank, or adding battery backup to your Arduino project, this module offers a reliable and efficient power solution. Features Input voltage range: 2.75V to 5.5V DC for flexible power sourcing Compatible with 3.7V lithium batteries (18650, 14500, etc.) Maximum charging current: 1A with adjustable settings 5V/1A USB output for powering external devices Built-in protection: overcharge, over-discharge, short circuit protection Onboard status LEDs for charging and output indication Compact dimensions: 27.8×17.8mm for easy integration into projects

DFRobot Multi-output DC-DC Buck Converter Module (3.3V/5V/9V/12V) The DFRobot Multi-output DC-DC Buck Converter Module efficiently steps down 7.5V–30V input to selectable output voltages of 3.3V, 5V, 9V, or 12V (default 5V), making it ideal for projects requiring multiple power levels. Output voltage selection is simple—just short the corresponding pads on the back. Designed to handle up to 5A load current (with proper heat dissipation), it features built-in over-temperature and overload protection (triggered at 70°C). An onboard LED indicator provides real-time status—solid red for normal operation and off when protection is activated. This versatile power module is perfect for powering LEDs, robotics, drones, servos, and low-power motors in multi-voltage control systems. Instructions: The module defaults to 5V output, with the 5V solder pad short-circuited. To change the output voltage to other options like 3.3V, simply disconnect the 5V pad and short-circuit the 3.3V solder pad. Note: As this is a step-down converter, the input voltage must always be higher than the desired output. It operates best with a voltage difference of 2V or more. Note: The output parameters are measured at 25 ?, and the heat dissipation (heat sinks) is required for continuous large current load. Pinout Diagram: Dimensions Features: Converts input voltage of 7.5V–30V to selectable output voltages of 3.3V, 5V, 9V, or 12V Designed with efficient heat dissipation for stable performance Includes over-temperature and overload protection, activating at 70°C

Dual Shaft BO Motor with Wheel (4pcs): These four Dual Shaft BO Motors with Wheels have a low-cost, geared DC motor that provides good torque and rpm even at lower operating voltages. The biggest advantage of these Dual Shaft BO motors is their ability to deliver strong performance. These motors can serve as an alternative to metal gear DC motors. The high-quality rubber wheels provide maximum traction while in operation, and their nylon-reinforced plastic rim makes them strong and sturdy. The BO motor with wheels is easy to install, making it an ideal choice for a mobile robot car. To create a mobile robot car, essential components like Arduino , batteries , switches , wires , and soldering tools are necessary. APPLICATIONS: Line Follower Robot Obstacle Avoider Robot Racing Robot Firefighting Robot