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W5500 Ethernet shield is designed using the WIZnet W5500 chip. It supports both 3.3V & 5V. This Ethernet Shield is compatible with Arduino and ARM embed Platform. Features -Suppport 3.3V / 5V. -High Speed Ethernet controller W5500 chip. -SPI interface. -Internal 32Kbytes Tx/Rx buffer. -10/100 Ethernet PHY embedded. -Support Auto Negotiation (Full / Half duplex, 10 / 100-based). -Hardwired TCP/IP Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE. -User Selectable GPIO pin. -Support SD-card slot for storage. -Support I2C, UART interface.
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Water sensor brick is designed for water detection, which can be widely used in sensing rainfall, water level, and even liquid leakage. Water Detector / Sensor Connecting a water sensor to an Arduino is a great way to detect a leak, spill, flood, rain, etc. It can be used to detect the presence, the level, the volume and/or the absence of water. While this could be used to remind you to water your plants, there is a better Grove sensor for that. The sensor has an array of exposed traces, which read LOW when water is detected.