uln 2803 2 Relay - Step Motor Board for Raspberry Pi
 



Perfect way to learn how to use the GPIO pins.

Plugs into the Raspberry Pi GPIO connector.

Has eight Blue  LED's and controls up to two stepper motors,

control 2 Relay, can be disable if you want use other function.




 1. J11   D0, D1,D2,D3,D4,D5,D6,D7,GND,VCC   OUTPUT

 with D0~ D7 LED

2. J10 & Mini USB for 5V input for Relay

3. J17 J15 Relay 1,2  Disable

4. J21 Vcc input Disable from J11


    This 2 relay -Step Motor board can plug in Raspberry Pi P1


Use this board you can learn how to program use "C" or  "Python" , Will provide sample program for test can download from our web site.

Full Support by our Pi_Scratch software can be very easy control by Scratch

Pi_Scratch detail    Scratch driver software  

 (1) command mode control step Motor  
 command "SMOTORainit"   initial  GPIO 17,18,27,22 as A Step Motor Port 
 command "SMOTORbinit"   initial  GPIO 23,24,25,7 as B Step Motor Port
  command "SMOTOR"  + speed (3-50) +(a or B ) + output step 
 100 --- clockwise 100 step , -100 --- anticlockwise 100 step
  a --  GPIO 17,18,27,22   , b  --  GPIO 23,24,25,4  

 

 (2) GPIO pin mode control Step Motor

main program turn relay 1,on 2 off -> 1 off, 2 on    on  cycle

press C   Stepper Motor clockwise

press A  Stepper Motor  anticlockwise

Press S  Stop

                 



Package Content

1x  Rs-Pi 2803 2 Relay -Step Motor Board 
1x  Manual 


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