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 Raspberry Pi - 4 USB Hub & SPI  23s17-2 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 & SPI 23s17 -2 (32 GPIO) Board

(4 Port USB Hub & 23s17 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 SPI  23s17 16 GPIO X2     23s17 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   display all 32 GPIO status


  Support our Pi_Scratch software   Detail


   U1 to U2 spi 23s17  address 40,42 
  40 --> 1  42 --> 2  44 --> 3  46  --> 4
  48 --> 5  4a --> 6  4c --> 7  4e  --> 8
  Command "sp"+ "address(1-8)" + "a" +"bit(1 to 8)" for Port A
  Command "sp"+ "address(1-8)" + "b" +"bit(1 to 8)" for Port B
  Command "bits"+ "address(1-8)" + "a" +"bit(8 to 1)" for Port A
  Command "bits"+ "address(1-8)" + "b" +"bit(8 to 1)" for Port B
   sp2b7 -->  spi address 2 Port B bit 7 ON/OFF
   sp3b4 -->  spi address 3 Port B bit 4 ON/OFF
   bits2b01010101 -->  address 2 port B from bit 8 to 11
                      output  --> 01010101                                                                                    
   bits2a01010101 -->  address 2 port A from bit 8 to 1
                      output  --> 01010101                                                                                        
   bits2aoff  --> address 2 Port A all OFF/clear
   bits2aclr  --> address 2 Port A all OFF/clear



Download sample program


   Download       User manual                                         


Package Content

  1x Rs-Pi 4 USB HUB & SPI 23s17-2 board

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



Raspberry Pi



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