WIFI SHIELD REV2

Overview

WIFI Shield REV2 supports IEEE 802.11b/g/n wireless protocol standard and serial output, which integrates TCP / IP protocol stack internally. It is specifically designed for Arduino boards including Arduino UNO, MEGA and Leonardo, and it supports 3.3V or 5V operation level so it can work with more Arduino-compatible boards.

Specifications

PCB size	58.0mm X 56mm X 1.6mm
Operation level	3.3V or 5V
Indicator	PWR

Electrical Characteristics

Parameter	Min.	Typical	Max.	Unit
Power voltage	3	3.3	3.6	VDC
Working current (VCC=3.3V)	0.5	15000	100000	uA
Maximum radio frequency input (with reference to input of 50Ω)	-	10	-	dB
Static withstand voltage	-	-	2000	V

Hardware

Pinmap

Micro SD Socket

Index of Interface	Name of Interface	Index of Arduino
1	SD_CS	D10
2	MOSI	D11
3	3V3	-
4	SCK	D13
5	GND	-
6	MISO	D12

WIFI module Interface

Index of Interface	Name of Interface	Index of Arduino
1	WIFI_RST	D9
Index of Interface	Name of Interface	Description
1	D-RX	Upgrade firmware, UART input
2	D-TX	Upgrade firmware, UART output
3	ERROR	Severe error of module, high level is valid.
4	WPS	WPS function input, descending portion is valid. If VDD/2 is input at the pin when starting, the module will enter WEB SERVER.
5	BOOT	Used in boot program, high level is valid.
6	RTS	UART requests sending
7	CTS	UART clears sending

Indicator

• PWR, 3.3V supply indicator: when supply is normal, PWR indicator will keep ON.

Button

• WIFI_RST, WIFI resetting button: press the button to reset WIFI module.

Note

• There is no existing library to support the module at present.