The BLE shield has the function of adapting low-power Bluetooth as a serial port , which are specifically designed for Arduino boards and compatible boards, simple to use, simply connect and a ready is ready to be used.

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 RS232 shield is designed for the Arduino controller and can easily convert UART to RS232 interface.

LDR Light Sensor with Relay

Play your .mp3 files stored by USB or SD card. For Use (12V): Place a 68Ohm/1W Resistor in series with the (+) of the Power Supply, to avoid excessive dissipation.

Imagine a Arduino Shield that can be configured to be an LCD, GPS, Wifi, or any Shield you can imagine!

An Controller Module of XH-M603 Charge, very easy to use, learn more about it here at ElectroFun!

Seeeduino XIAO carries the powerful CPU-ARMG; Cortex & -MO (SAMD21G18), which is a low power Arduino Microcontroller, on the other hand, this small board has a good processing performance, and needs less energy. In addition to the powerful CPU, the Seeeduino XIAO excels in many other functions. It has 14 GPIO PINs, which can be used for 11 analog PINs, 11 digital PINs, 1 I2C interface, 1 UART interface and 1 SPI interface.

Getting started in the Arduino world is not always easy. You need to learn hardware knowledge, programming code, know methods of connecting various complex interfaces and even master welding skills. It takes a lot of learning before you start learning Arduino programming.

However, there is a solution to these problems with this Kit for Grove Beginners for Arduino , you can get started in a simple way the first steps of Arduino upside down and most of this type of kits, the Grove Beginner Kit for Arduino is a complete kit, without a breadboard, without soldering and without the need for wires. We cut all these problems, in order to offer the best experience, you just need to focus on coding and Arduino Leaming.

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.

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 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.

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.

This is the Latest Version of the popular Simon Says Kit. Some changes have been made to the board that should make it easier than ever to create for a beginner! All components are Through-Hole, making this Kit a great option to start when learning to weld. When assembling this Kit, you will have the chance to solder a 28-pin Microprocessor, LEDs, Battery Clips and more.

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.

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.

The MKR WAN 1300 is a card that combines the functionality of MKR Zero and LoRa connectivity. It is the ideal solution for those who want to develop IoT projects with minimal prior experience in networks with a low power device.

The KY039 Infrared Pulsation Sensor is a small, inexpensive plate used to measure the electrical activity of the heart to enable heart rate / pulse checking in different parts of the human body. The data presented by the Sensor is useful for formulating exercise routines or even for studying and verifying heart activity levels.

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).

Open the Original Scheme, Free Download the Development Software Interface, Also Allow Your Needs to Be Modified, Easy and Convenient to Download the Program.

You can simply use Sensors, All Kinds of Electronic Component Connections (such as LED Lights, Buzzer, Buttons and Photosensitive Resistance, etc.), to do all kinds of Interesting Work.

Stem Shield for your Arduino, the Velleman.

In/Out Shield for your Arduino, Velleman.

This small, rugged and powerful card features Wi-Fi and Bluetooth connectivity that, combined with its low power architecture, makes it a practical and economical solution for your connected projects.

The IoT Gravity for Micro: Bit Starter Kit is a complete micro-bit starter kit that quickly experiments and develops designs.

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

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.

Arduino Leonardo Original without connectors.