Standard I/O Expansion Shield V5 Xbee Sensor Shield RS485 V5 Funduino Board Module

Description:

• Our IO expansion board is evolving, this latest V5 IO expansion shield is now supporting Xbee. It combines our popular Xbee shield

• with IO expansion shield(V4). It even supports SD card which provides the ultimate

• functional expansion for Arduino so far. As its predecessor, it supports RS485, APC220,

• Bluetooth communication, servo control.

Specification：

•  Support RS485

•  Support Xbee (Xbee pro)

•  Support Bluetooth

•  Support APC220

•  Support SD card read/write

• 1. extension of 14 digital IO ports (12 servo interface) and power;

• 2.6 analog IO ports and power;

• 3.1 digital external power port terminal;

• 4. Digital-port external power supply and an onboard power supply automatic switching;

• 5.1 External power input terminal and an input pin;

• 6.RS485 interface;

• 7. reset button;

• 8.xbee/Bluetooh Bee Bluetooth wireless data transmission interface;

• 9.APC220/Bluetooh V3 Bluetooth wireless data transmission interface;

• 10.IIC/I2C/TWI interface;

• 11.3.3V output port;

• 12.SD card module interface;

RS485:

• It uses an SP485CN chip to handle comms.

• The screw terminals (assuming that the three jumpers are set to '485') marked 'A' and 'B' go directly to the IC 'A' and 'B' pins (6 & 7 respectively).

• The screw terminal marked VCC goes to the IC VCC pin (8), and also to the board's +5V line

• The screw terminal marked GND goes to the IC GND pin (5), and also to the board's GND line

• The chip's DI (Data Input?) pin (4) is connected to for Arduino's Digital Pin 1 (TX).

• The chip's RO (Data Output?) pin (1) is connected to for Arduino's Digital Pin 0 (RX), with a resistor pull-up to the +5V rail.

• The chip's DE (output enable) pin (3) is connected (via a resistor) to for Arduino's Digital Pin 2 - this is active high.

• This DE pin is also connected to the chip's RE bar (receiver enable) pin (2) and therefore controlled by for Arduino's Digital pin 2 too - this is active low.

• Digital Pin 2 = Rx/Tx 'Enable'; High to Transmit, Low to Receive

• So, to transmit data from for Arduino Digital Pin 1 you need to take Digital pin 2 high, and to receive data to for Arduino Digital Pin 0 you need to take Digital pin 2 low.

•  It combines our popular Xbee shield