Raspberry Pi B+ to Arduino Adapter HAT for Raspberry Pi B+/respberry Pi 2

This is a Raspberry Pi B+ to Arduino Uno interface adapter HAT for Raspberry Pi B+/respberry Pi 2.  By Installing this hat on Raspberry Pi B+/respberry Pi 2, the tremendous number of Arduino shields can be used on Raspberry Pi B+/respberry Pi 2.

Functions:

• Compatible with Arduino Uno, Leonardo
• Comes with Xbee interface, so that different types of Xbee modules can be used
• Comes with USB to UART circuits, which can be used to do serial port debug and configure the Xbee
• Comes with interfaces for sensors
• Comes with ADC, 10 bits, 38KSPS, 11 Channels, (6 of them for Arduino headers, and 5 for other sensors)
• Comes with RTC

Explainations of circuits:

Headers:

1. Arduino headers

2. ICSP Headers

3. Xbee headers

4. Sensors headers

5. Headers for Raspberry Pi B+/respberry Pi 2

6. USB to UART headers

Components:

7. TLC1543: ADC chipset

8. PCF8563: RTC chipset

9. CP2102

10. 32.768KHz crystal: crystal for RTC

11. Power indicator LED

12. Xbee status LED

13. Reset buttons for Xbee and Arduino headers  

14. EASYLINK button for Xbee

15. Cell battery socoket for RTC: CR1220

Jumper headers:

16. Reference voltage selection for TLC1543

17. Jumper for RTC

18. UART jumpers: 

     If P_RX->CP_TX and P_TX->CP_RX: USB TO UART connected to serial port of Raspberry Pi B+/respberry Pi 2

     If XB_RX->CP_TX and XB_TX->CP_RX: USB to UART connected to serial port of Xbee

     If XB_RX->P_TX and XB_TX ->P_RX: serial port of Xbee connected to serial port of Raspberry Pi B+/respberry Pi 2

19. ADC jumpers:

    Short headers 2 and 3: The A0-A5 of Arduino are used for ADC inputs.

    Short headers 1 and 2: The A0-A5 of Arduino are used for digital inputs.

20. I2C jumpers:

    When installed, A4 and A5 of Arduno are used for I2C control pins (the ADC selection jumpers for A4 and A5 need to be left floating.)

21. SPI jumpers:

    Short headers 1 and 2,  D11-D13 of Arduino are used for SPI pins (by default).

    Short headers 2 and 3, D11-D13 of Arduino are used for digital pins. 

Dimension:

Download:

• Schematic
• Source files for Sample projects
• Driver for the USB to UART port
• Datasheet of TLC1534
• Putty