描述

for Rs-Pi V2  i2c in bus 1  

 ” i2cdetect -y 1 ”  for i2c bus scan

for Rs-Pi V1  i2c in bus 0  

” i2cdetect -y 0 ”  for i2c bus scan 

i2c Bus Detect  Status

20  -> MCP23008    48  -> TMP102       68 -> RTC DS1307        50  -> 24c32

60    ->  MCP4725     49-> ADS1015

use eeprog 0.7.6 can read/write  for  24c32 or 24cxx

23008 8 bit GPIO     use 23008.py can set each bit output high or low

     MCP4725 12bit Digital-to-Analog Converter 

*     demo  9 bit   output  sinewave.py    at address “60”

MCP4725 demo  9 bit   sinewave.py    at address “60”

mcp4725  demo sinewave.py   result

 

*   ADS1015 12bit  Analog-to-Digital Converter

     demo  12 bit   4 channel  input    ads1015-49.py    at address “49”

MCP4725 & ADS1015 Demo  

 ADS1015 use 4  trimpot 10K OHM for 4 channel Analog  input 

 MCP4725 output to USB Digital Oscilloscope

Change R28 ,R32  Jumper you can change USB-TTL

or USB-RS232 function

* USB-TTL console function, access you Rs-Pi by a  normal USB A to USB Mini B cable 

* USB-RS232 make your  PC or Mac or Rs-Pi have full function 9 pin RS232 Port

 

Spec Detail

1. U5 MCP23008  J2 (GP0 ~  GP7 ) OUTPUT & GP0, GP1, GP2, GP3, GP, GP5, GP6, GP7 (8 LED OUTPUT )

R20,R21,R22 (A0,A1,A2) address select      JP12 Disable Jumper    Datasheet

2. U8 RTC DS1307 with CR1220 Battery    Datasheet

3. U7 TMP102 Temperature Sensor      Datasheet

4. U9 24C32  32Kbit  EEPROM    JP10 Disable Jumper     Datasheet

5. U6 MCP4725 12bit Digital-to-Analog Converter ,    Datasheet

JP11 (AOUT, GND)  JP1 Disable Jumper

6. U11 ADS1015 12bit  Analog-to-Digital Converter ,   Datasheet

J7 INPUT (AIN0, AIN1,AIN2,AIN3,GND,3V3)       JP12 Disable Jumper

7. J5 (5V, GND,SCL,SDL) J6(3v3,GND,SCL,SDL)  I2C output

U2 – USB 4 Ports HUB chipset

8. J1 (JP3)  USB HUB upper port signal input from Rs-Pi

9. J13  Mini USB 5V input for USB Hub, you don’t need plug 5V , the USB Hub already use 5V  from Raspberry Pi (P1 pin2), if your USB device need more power,  then you can plug-in 5V in this port.

10. U10 FT232RL  J4 USB input from PC for USB to RS232 console port, just connect a cable  (5pin mini USB-B  to A USB ) then you have this console function. Datasheet 

U12 ZT32433 RS232 Transceiver Driver , You can have DB9 full 9pin RS232 output  from PC or Mac USB cable input or from Rs-Pi HUB Port for input Datasheet

11. J11  for RS-Pi V2 GPIO connector (got 4 more GPIO pin)

Adafruit Occidentalis v0.2 image support the

TMP102 and RTC DS1307 , ADS1015 , MCP4725

Download sample program   mcp23008.py  output higi or low to each bit for MCP23008 in address “20”

23008-20.py    for LED chaser program   Rs-Pi V1 board

23008-1-20.py    for LED chaser program    Rs-Pi V2 board

ads1015  sample program

Download       User manual

Full 9pin DB9 RS232 com port output with 30cm length cable

Rs-Pi USB Hub connect 4 USB devices (keyboard, Mouse, 3G dongle, Wifi Dongle)

doesn’t need extra 5V power input,   The Rs-Pi RS232 console cable connect to on board

RS232 port, the USB console port connect to PC USB port.USB port.

 

FT232RL driver  loaded when  System Boot

 

產品內容

1x Rs-Pi USB HUB & I2C w/ USB console board

1x  USB to MINI USB hub input cable

1x 2.0mm pitch 2×5 to DB9 30cm cable

1x CR1220 3V Battery

1x Manual