Ethernet Shield - W5100 for Arduino Uno, Mega mq3 It is ideal for providing

It is ideal for providing a regulated 5V USB output to charge your iPhone

it can measure both small and large amounts of light by changing the integration time

Infrared Barrier Sensor Module (Obstacle Avoidance)The sensor module light is adaptable to the environment

The chip is quite small

DC Current Per I/O Pin

Ethernet Shield - W5100 for Arduino Uno, Mega mq3 It is ideal for providingThe Arduino Ethernet Shield W5100 is one of the most interesting expansion boards which allows for controlling the Arduino board via LAN or Ethernet connectivity. This can be useful for example if you need to get some information from a network, or place your own web server, or access a remote web server. You can also use Arduino to control a network. Onboard this Ethernet Shield W5100 is a MicroSD card socket for data storage. For communicating with