Controlling thruster usings esc which is conncted to jetson nano through pca9685

i am trying to activate blue robotics t200 thrusters with blue robotics basic esc which is connected to pca9685 module with ground and pwm signal wires. the pca9685 is connected to a 5 v power supply, 2 5v servo (which work perfectly) and the Jetson nano. i assumed that since both the servos and the esc controller works based on PWM signal it won’t be a problem to activate the thrusters the same way i activated the servo motors. looks like i was wrong. no matter what i do the motor won’t start. ive tried many different variations in the code but nothing made the thrusters work. the best i got was when the thruster started beeping non stop.
the is below. servo[15] represents the thrusters.

from adafruit_Servokit import servokit
import board
import busio
import time
import adafruit_pca9685

12c_bus0=(busio.I2C(board.SCL_1, board.SDA_1))
pca = adafruit_pca9685.PCA9685(i2c_bus0)
kit = servokit(channels=16, i2c=i2c_bus0)
kit.servo[15].set_pulse_width_range(1100,1900)
sweep = range(0,180)
for degree in sweep:
kit.servo[0].angle=degree
kit.servo[3].angle=degree
time.sleep(0.01)

time.sleep(0.5),-
sweep = range()
for degree in sweep:
kit.servo[0].angle=degree
kit.servo[3].angle=degree
time.sleep(0.01)
kit.servo[15].angle=20
time.sleep(5)

hello ofek.reches,

are you using 40-pin expansion header? please check NVIDIA Jetson Nano J41 Header Pinout – JetsonHacks for the pin connections.
you may also configure the pin to change the usage as SFIO,
please check this similar topic for using PWM on Nano, Topic 178959.
thanks

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.