Data Logging / Sensor Breakout Shield for Arduino

This Arduino shield can be useful for putting up a full-featured data logger device based on Arduino, with convenient I/O extension, with microSD card seat and iPhone/iPad connectivity. It provides 4 XH-2.54 ports for Serial UARTs and I2C connections.

* Please note that Bluetooth module is shipped unsoldered.

The shield features:

• MicroSD/TF card socket
• Serial UART port (GND,VCC,Tx,Rx) x 2
• I2C port (GND,VCC,SDA,SCL) x 2
• Digital I/O breakout pins x 2
• Analog I/O breakout pins x 4
• 5v/3.3v switchable for VCC of I2C port (via jumpers)
• Soldering seat for Bluetooth module (optional DIY)
• Additional shield stackable (with MEGA only)

When used with Compact MEGA 2560

Serial1 and Serial2 ports are wired to two of ATMega2560′s hardware serial UARTs. I2C ports are wired to ATMega2560′s SDA/SCL pins. TF socket is connected via hardware SPI (CS pin 53) . The digital breakout pins are wired to D22 and D23. The analog breakout pins are wired to A7~A9.

When used with Arduino UNO/Leonardo/Duemilanove

Serial2 port is wired to ATMega328′s hardware serial UART.  Serial1 port is wired to D2/D3 which can be used with software serial. I2C ports are wired to ATMega328′s SDA/SCL pins. TF socket is connected via hardware SPI (CS pin 10) . The digital breakout pins are wired to D4 and D5. The analog breakout pins are wired to A0~A3.