This is a basic breakout board for the FTDI FT232RL USB to serial IC. 

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.

When you assign a high level to the module pin, the electro magnet can suck magnetically conductive objects. Otherwise, it will release the object.

An electro magnet is a type of magnet in which the magnetic field is produced by electric current. An electric current flowing in a wire creates a magnetic field around the wire, due to the Ampere Law. To focus the magnetic field on an electro magnet, the wire is wound into a coil with many twists of wire side by side. The Magnetic Field of All Twists of the Wire passes through the Coil Center, creating a Strong Magnetic Field there.

It's Easy to Use to Learn the Electro Magnet Principle.

Replace all your Command Confusion with the Broadlink RM Mini 3 Universal Smart Home Wifi IR Remote Control with App and Professional Support, Compatible with Scene and Suspend Mode, Exceptional Hardware Configuration and Time function.

Portable Bluetooth Speaker Aux/MicroSD/USB PARTY

Módulo 433MHZ LORA com alcance 3000m.

Kit 2 receiver transmitters 3 channels 433mhz with 2 commands from Orno.

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.

Portable Bluetooth Speaker with Micro 10W AUx/USB/SD/BT

Portable Bluetooth Speaker with Micro 10W AUx/USB/SD/BT

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.

In/Out Shield for your Arduino, Velleman.

LinkIt Smart 7688 Duo - Arduino to Linux