I2C-9685-PWM

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I2C 16 channel PWM Driver based on a PCA9685

 

Download I2C-9685-PWM.SMD-parts -
Download I2C-9685-PWM -

 

I2C-9685-PWM Version 1.0

First built: 2020-07

Not tested or validated

The PCA9685 is an I2C-bus controlled 16-channel LED controller optimized for Red/Green/Blue/Amber (RGBA) color backlighting applications. It can also be used to control Servos. Each output has its own 12-bit resolution (4096 steps) fixed frequency individual PWM controller This design, when used in conjunction with the IO4-LED_STRIP driver board, drives RGB + “white” LED strips - I use one set for backdrop lighting (dawn and dusk sunsets…) and the other for overhead (sunlight) valence illumination.

Schematic
Schematic
Bot Silk
Bot Silk
Board
Board
Top Silk
Top Silk

Download I2C-9685-PWM.gerbers.zip - Gerber Fabrication files
Download I2C-9685-PWM.parts - Parts List (spreadsheet data)

 

I2C-9685-PWM.bom

Parts Value Package Quantity Library Type/Feeder
C3, C4 0.1uF 0805-CAP 2x SPCoast NONE
R1, R2, R3 4k7 0603-RES 3x SPCoast NONE
VIN 9-12VDC PWR_LABEL 1x SPCoast PTH
R4, R5, R6, R7, R8, R9 10k 0603-RES 6x SPCoast 46
C2 10uF 0805-CAP 1x SPCoast 22
C1 220uF 0810-CAP 1x SPCoast NONE
PWR   DCJ0202 1x SPCoast PTH
J1, J2   I2C-L 2x SPCoast PTH
CON1, CON2, CON3, CON4   RJ24-INVERTED-PINS 4x SPCoast PTH
SW2 A3 A2 A1 A0 EDG-04 1x SPCoast PTH
BOARD1 BOARD80X100-IOB BOARD-DINRAIL-3.17IN-IOB 1x SPCoast PTH
VR1 CJ7805 TO-252 1x SPCoast NONE
VIN1, VIN2 CONNECTOR-POWER-L POWER-R2 2x SPCoast PTH
FID-LR, FID-UL FIDUCIAL FIDUCIAL_1MM 2x SPCoast NONE
LED1 G 0603-LED 1x SPCoast 3
U$1 OSHW-LOGOL OSHW-LOGO-L 1x SparkFun PTH
U1 PCA9685PW TSSOP28 1x SPCoast NONE
SDA SCL 1X02_LOCK 1x SPCoast PTH
SCL SDA 1X02_LOCK 1x SPCoast PTH
SW1 xx xx A5 A4 EDG-04 1x SPCoast PTH

This technical documentation is licensed under the CERN Open Hardware Licence v1.2