Raspberry Pi - 4 USB Hub & I2C AD/DA - 1-Wire   Board



Raspberry Pi internal 4 Ports USB Hub & AD/DA &

Multi-function I2C & 1-Wire Board


(RTC-DS1307, Temperature Sensor-TMP102, D/A ,A/D ,

EEPROM, MCP23008, DS2482-100)


 size small than Raspberry Pi with Multi-Function

 Why Raspberry Pi suggest you need use External USB Hub with power Adapter? 
 because they design use 140mA fuse in each USB port, "140mA", 
 but USB spec need 500mA for each port,
 that's why lots people have power issue for USB port.
 in Rs-pi V2 they remove the Fuse design, and yo don't have any protect from Rs-Pi USB port.
 What  you can do ? 
  1. modify Rs-pi Fuse power circuit.  

2. Use external USB Hub with power adapater 

  Our RS-Pi internal USB hub with 1.5A polyswitch fuse and use USB signal (D+, D-) from

Rs-pi  only,  not use power from USB port and use Raspberry Pi 5V from P1 pin2 , so if you have good quality  "more than 1.2A" DC 5V adapter , then you can use our Rs-Pi USB hub no problem.

 if your device need more power, we also can provide extra 5V input(J13 mini USB B).
 The Rs-Pi V1 board  if you not modify the fuse circuit, you may need plug in extra Dc 5V from

(J13 mini USB B), for the Rs-Pi V2 no need for this input.





Raspberry Pi internal 4 Ports USB Hub & AD/DA &

Multi-function I2C Board


(RTC-DS1307, Temperature Sensor-TMP102, D/A ,A/D ,

EEPROM, MCP23008, DS2482-100)







                                                                  i2c Bus Detect  Status

   18  ->  DS2482-100   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"



/28.7E1CC8030000    -  Connect   &  Detect  DALLAS 18B20P   TEMP Sensor

cat temperature   --    22.312    &  32.125




Spec Detail

1. U5 MCP23008  J2 (GP0 ~  GP7 ) 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

8. U15 DS2482-100  I2C to 1-Wire bridge device

     J22 1-wire Port pin 1 - pin4 

     (5V,GND, OW (1-Wire Data, ESD Protected). RT (1-Wire Return/Ground ,ESC protected)

9. U16 DS9503P 1-Wire ESD protection diode

10.  U2 - USB 4 Ports HUB chipset

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

11.  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. 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


  Support our Pi Scratch Software  Pi_ Scratch


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


                               User manual


package Content


1x Rs-Pi 4 USB  HUB & I2C & 1-Wire board

1x  USB to MINI USB hub input cable

1x CR1220 3V Battery

1x Manual  



Raspberry Pi



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