ESP32 and ARC - Arduino and PCA 9685

Nice! I see you are using I2C to connect esp32 to the PCA. How do you connect to ARC? Can you control the servos from ARC?

I only tried the the ARC serial monitor to see the serial output for the 3 servos

I will test

On DJ's Arduino code, I can use servos 3 to 11 on my Arduino shield

https://www.amazon.com/gp/product/B01FDH8SM6/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1

or here

https://www.amazon.com/HiLetgo-Upgraded-Arduino-Sensor-Expansion/dp/B01MXRXCAW/ref=dp_prsubs_1?pd_rd_i=B01MXRXCAW&psc=1

proteusy,

here it is with the Arduino with the PCA9685 - to control each servo individually

Downloaded Mickeys andDJ's firmware  from here https://synthiam.com/Support/Hardware/Adafruit-16-Servo-Shield

I modified their code, added:  Adafruit_PWMServoDriver pca9685 = Adafruit_PWMServoDriver(0x40);

for one PCA9685, if you want 2 PCA9685 just change the hex to (0x41) or  3 PCA9685 (0x42) and on and on...

in setup I added:

// Initialize PCA9685
pca9685.begin();

// Set PWM Frequency to 50Hz
pca9685.setPWMFreq(50);

If your Arduino does not have a SDA or SCL

ARC connect Arduino at 57600 in settings

use:

Analog 4 -> SDA
Analog 5 -> SCL

GND to GND

VCC to 5v from Laptop computer

make sure you add a separate power supply - 5 - 7.5 V  to the PCA9685 for the servos

easy connection


works very good

EzAng

Thanks EzAng, will need this for my next project.

Can you pls help? I'm using Arduino UNO and PCA9685, changed the code and attached the cables as you said.  I'm new to this ARC software so can you pls. tell me on which port we have to use servo like D0, D1 or any other?

pra_nav,

just tested it again , works well

separate 5 to 7.5 v power supply, I use into the PCA 9685

Arduino 5v - GND -  from laptop - make sure the you use 57600 (in settings) when you connect to the Arduino from ARC

try all  D0 to D15


2 pics