Raspberry Pi - 4 USB Hub & I2C 23017-2 32 GPIO Board


 Raspberry Pi  4 Ports USB Hub & I2C 23017-2 32GPIO  Board


 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 portand 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 & I2C 23017 -2 (32 GPIO) Board

(4 Port USB Hub & 23017 x2 32GPIO)






                   Rs-Pi 4hub 23x17-2  plug in Raspberry Pi


                    Rs-Pi 4hub 23x17-2  plug in Raspberry Pi


        Rs-Pi 4hub 23x17-2  plug in Raspberry Pi  with 32 LED "ON"



Spec Detail

1. U15 U16 I2C 23017 16 GPIO x2 with 32 LED     23017 Datasheet

2.  U2 - USB 4 Ports HUB chipset

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

3.  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.

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




   our new output test program     23017-2port-s-v103.py   display all 32 GPIO status


Support our Pi_Scratch software   Detail

  U1 to U2 i2c 23017  address 21,22
 Command "i2"+ "address(20-27)" + "a" +"bit(1 to 8)" for Port A
 Command "i2"+ "address(20-27)" + "b" +"bit(1 to 8)" for Port B
 Command "bit"+ "address(20-27)" + "a" +"bit(8 to 1)" for Port A
 Command "bit"+ "address(20-27)" + "b" +"bit(8 to 1)" for Port B
  i221a1 -->  i2c address 21 Port A bit 1 ON/OFF
  i222b4 -->  i2c address 22 Port B bit 4 ON/OFF
  bit22b01010101 -->  address 22 port B from bit 8 to 1
                      output  --> 01010101  
  bit21a01010101 -->  address 21 port A from bit 8 to 1
                      output  --> 01010101  
  bit21aoff  --> address 21 Port A all OFF/clear
  bit21boff  --> address 21 Port B all OFF/clear
  bit22aoff  --> address 22 Port A all OFF/clear


Download sample program 


 led-21.py   led-22.py  23017-21.py  23017-22.py


   Download       User manual                                         


Package Content

  1x Rs-Pi 4 USB HUB & I2C 23017-2 board

1x  USB to MINI USB hub input cable
1x Manual 



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