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

SKU: 180324

3.25 3.25 Piece 3.25 USD

¥ 22.00

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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