I2C 16 Channel 12 bit PMW Servo
 & I2C 23017 16 GPIO Board with LED Kit
 for Raspberry Pi B+ / B2
 


The PCA9685 is an I2C-bus controlled 16-channel LED controller optimized for LCD
Red/Green/Blue/Amber (RGBA) color backlighting applications. Each LED output has its
own 12-bit resolution (4096 steps) fixed frequency individual PWM controller that operates
at a programmable frequency from a typical of 40 Hz to 1000 Hz with a duty cycle that is
adjustable from 0 % to 100 % to allow the LED to be set to a specific brightness value.
All outputs are set to the same PWM frequency.

PCA9685 also has a built-in oscillator for the PWM control.
However, the frequency used for PWM control in the PCA9685 is adjustable from
about 40 Hz to 1000 Hz as compared to the typical 97.6 kHz frequency of the
PCA9635. This allows the use of PCA9685 with external power supply controllers. All
bits are set at the same frequency.

The PCA9685 has 4096 steps (12-bit PWM)       


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

(1) PWM / Servo control demo

 
 2 Servo in channel 0 & channel 7 
 
 Command "SE"+ "PWM (0-15)" + "a" +"angle" for Address 41
 
 se7a10 --> channel 7 servo move 10 angle address 41
 se7a-10 --> channel 7 servo move -10 angle address 41
 se0a10 --> channel 0 servo move 10 angle address 41
 se0a-10 --> channel 0 servo move -10 angle address 41

 (2) PWM  LED output demo 

 

   
 LED module (Blue, Green,Yellow,Red)

 

LED Scrolling  Command     PWMLED41S0E15D4True
PWMLED”Address” S[Start channel] E[End channel] D[Delay / Timing] [True/False]
 
Address 41, 42,43,44 
Start channel & End channel   0 ~ 15    16 channel
D   1,2,3,4,5    (1 ~ 100) Delay Timing
 
LED Brightness control Command 
PWMLED “Address” “B” “0 ~ 1000“ 
PWMLED41B1000

 

 

1. J3 Mini USB 5V input for PWM V+ & GPIO output pin 10 V+                                    

    J2 2P Terminal Block 5V input for PWM V+ & GPIO output pin 10 V+

2. J1 Rs-Pi V2  GPIO output

3 JP13  DA0 ~ DA7   U14 Port A    . JP14 BA0 ~ BA7     U14 Port B

4. R64,R65,R66 ( for  U14 Address select  A0,A1,A2)

5. U14 I2C 23017 -1  Port A,B         

6. U15  uln2803 

7. U3 PCA9685 (PWM Port 0 ~ 15)      

8. R10,R11,R12,R13,R14,R15( for U3 Address select A0,A1,A2,A3,A4,A5) 

9.Red power-good V+ LED

   10. 1.6A PolySwitch Fuse for V+ input protect. 



                              plug in Raspberry Pi with Servo motor
 
                                             

                      in i2cdetect  you can found 2 device in system (21,41)

21 -  23017     41 - 9685     

    

Package Content

1x  Rs-Pi I2C 9685 16 channel PWM / Servo & 23017 16 GPIO board 
1x  Manual 


Raspberry Pi® is a trademark of the Raspberry Pi Foundation

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