The Arduino WTV020-SD MP3 Module is a voice recording module with 1GB SD Card storage capacity. You can upload WAV and AD4 format files that conform to FAT formatting. It supports 6KHz to 32KHz, being 36KHz for AD4 files and 6-16KHz for voice sampling rate (Audio Sampling).

The Vma210 Expansion Board is designed to allow easy access to the interface pins of an Arduino Nano. Each DIO pin or analog pin on the Nano is brought to an appropriate header.

Acrylic Transparent Plate for Arduino UNO R3.

In/Out Shield for your Arduino, Velleman.

Numerous Types of Electronic Components in a Kit for you to Learn the Best Way!

Header Socket with 10-pin female ideal for PCB's or Arduino.

The HC-12 433MHz Transceiver is a wireless communication Module, which is based on the RF SI4463 chip, has a built-in microcontroller and can be configured by AT commands, the maximum output power is 100mW (20dBm) and the receiver sensitivity differs from: 117dBm to -100dBm, depending on the transmission speed. Accepts 3.2V - 5.5V and can be used with 3.3V and 5V UART voltage devices.

This AA boost module integrates with TI's TPS61032 auxiliary chip, which is capable of producing 5V 1A with input above 1.8V . The only difference between V1 and V2 is to change the output current from 2A to 1A.

Microsoft and SparkFun have teamed up to bring you some IoT (Internet of Things) fun. The Microsoft Azure IoT Starter Kit for the SparkFun Thing Development Board has been designed to help you seamlessly connect your device to the cloud with Microsoft Azure IoT. 

The upgraded Input Shield for Arduino includes a two-axis mini-joystick (with moment switch) as well as four colored buttons (red, yellow, blue, green). The reserved interface of the APC220 Radio Data Module (SKU: TEL0005) and the Xbee interface are designed to make it easy to perform the wireless remote control button controller. The shield can easily be stacked on top of your Arduino boards. It can also connect with OLED2864 and OLED9664.

The MQ4 is used in gas leak detection equipment in the consumer and industrial markets, this sensor is suitable for detecting CH4 , natural gas , LNG , avoiding exposure to alcohol, kitchen smoke and cigarette smoke . Sensitivity can be adjusted by potentiometer

This package includes a Sensor of Level of Water and a Sensor of Humidity from Solo. If the plates have water covering the sensor components, an analog value will be available on the "SIG" connection. The Sensor of Level of Water can detect up to 4cm of water. This way, you can check if your aquarium, or your pet's water bowl, still has enough water. You can use the Sensor of Moisture of the Soil to check your plant's soil or growing environment, for example.

Gravity: IO Expansion Shield for Arduino V7.1

Solid State Relay - 8 Channels

Do you want to program your RGB LED strip to be a little more "rhythmic" or "unpredictable"? This RGB LED Strip Shield contains all the necessary components to create a super cool RGB LED project with your Arduino.

The Vma449 integrates the Voice Recorder ISD1820 and Playback CI to record a single message up to 20 seconds long. The recorded message is stored in the analog flash memory that keeps the message stored even in the event of a power failure. The module has an integrated microphone to record your message and buttons for recording, partial playback or full reproduction of the message functions.

Uses the NTC Thermistor Sensor, Good Sensitivity. The Clean Waveform of the Comparator Output Signal is Good, Driving Capacity.

LPS331AP Pressure/Altitude Sensor Carrier with Voltage Regulator

Control your Arduino projects from anywhere in the world with a free app thanks to the Tuya IoT interface! Connect the Module of Tuya IoT Interface to your Arduino using the 4 included male wires. Then, connect your Arduino to the Cloud IoT Tuya simply by installing the Tuyav library, which is compatible with ATmega Chipsets (or AVR Platform). This will allow you to connect to the Tuya app via WiFi and allow you to control up to 5 outputs.

This ESP8285 ESP M2 Module provides easy-to-use WiFi for any UART port and is compatible with the HC-06 Bluetooth modules. If your project uses Bluetooth, it is very easy to convert it to WiFi. Using the integrated web interface, WIFI-UART communication can be configured for TCP or UDP sockets on any port.

A ESP32 NodeMcu WiFi CP2102 Module with Built-in Antenna, MicroUSB Connector, Bluetooth BLE 4.2, Analog Digital Converter, GPIO with PWM Functions, 12C, SPI, Etc and Supports Remote Firmware Upgrade.

An Educational Kit with Arduino and about 30 Modules and Components, ideal for an introduction to electronics.

The ESP8266 Thing is a breakout and development board for the ESP8266 WiFi SoC – a leading platform for Internet of Things (IoT) or WiFi-related projects. The Thing is low-cost and easy to use, and Arduino IDE integration can be achieved in just a few steps.

ITDB031 is a serial port BLE Module. It is based on TI's CC2541 BLE chip. With it, you can transfer data wirelessly and do remote control. It supports central and peripheral modes. And it supports remote control for the other side that is connected. You can also support custom commands when you combine it with other devices. BLE Bee is compatible with XBee. You can simply connect it to XBee.

Note: The serial interface is 3.3V, not the typical 5V, as with many Arduino boards.

A large LED array panel of dots to connect to your PI, Arduino and more! This large, bright 512 LEDs  has integrated controller circuits designed to facilitate direct use on your board.

The Iteaduino Uno is a microcontroller board based on the Arduino UNO.

A-Star 32U4 Prime LV microSD

SparkFun PWM Shield

Shield XBee SparkFun

The Reader of Capacitive Fingerprint is a Module of Fingerprint standard designed for Secondary Development, allows a Verification of Fingerprint Fast and Stable.

Based on a STM32F105R8 High Speed ​​Digital Processor, combined with high security commercial Fingerprint Algorithm and advanced semiconductor sensor, the capacitive fingerprint reader becomes a simple yet intelligent integration module, providing features such as registration digital printing, image processing, resource location, model generation and storage, fingerprint matching and research, etc.

Infrared Obstacle Sensor E18-D80NK

The Arduino Mega 2560 is a microcontroller based on the ATmega2560 suitable for those who are looking for more elaborate projects, that need a greater number of inputs and outputs than the Arduino UNO.

A Starter Kit Educational DIY Smart Home with the Arduino UNO R3, in a Component Box with a Protective Cover, with a Sensor of PIR Movements, a Bluetooth V4.0 Module, a Water Sensor, a Relay Module, a Humidity Sensor, an LCD1602 Display, even a Screwdriver, a Set that in total consists of about 110 pieces.