i2cdetect -y 1 with nothing. is it normal ?

[Sam-saidane]

Hi, i can't do any test.py or main.py... i hava an error "OSError: [Errno 121] Remote I/O error" all the time. can you help me ?

log: i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- --

[Sam-saidane]

start ..

No correct I2C address found, Please use command 'i2cdetect -y 1' to check the I2C address! Program Exit.

I2C is enable

[bravok]

Having the same issue getting the servos calibrated and installed. It worked once last night, but this morning I'm getting the following sudo python Servo.py Now servos will rotate to certain angles. Please keep the program running when installing the servos. After that, you can press ctrl-C to end the program. Traceback (most recent call last): File "/home/kris/Freenove_Big_Hexapod_Robot_Kit_for_Raspberry_Pi/Code/Server/Servo.py", line 51, in <module> servo_installation_position() File "/home/kris/Freenove_Big_Hexapod_Robot_Kit_for_Raspberry_Pi/Code/Server/Servo.py", line 35, in servo_installation_position S=Servo() File "/home/kris/Freenove_Big_Hexapod_Robot_Kit_for_Raspberry_Pi/Code/Server/Servo.py", line 10, in __init__ self.pwm_40 = PCA9685(0x40, debug=True) File "/home/kris/Freenove_Big_Hexapod_Robot_Kit_for_Raspberry_Pi/Code/Server/PCA9685.py", line 32, in __init__ self.write(self.__MODE1, 0x00) File "/home/kris/Freenove_Big_Hexapod_Robot_Kit_for_Raspberry_Pi/Code/Server/PCA9685.py", line 36, in write self.bus.write_byte_data(self.address, reg, value) OSError: [Errno 121] Remote I/O error

i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- --

[bravok]

Okay solved for me: The connector between the servo controller board and the raspberry pi wasn't completely seated. I pushed it down as far as it would go, reran the program and it works.

[bravok]

@Sam-saidane do you still have this issue?

[Shaynee-MO]

@Sam-saidane Please unplug and replug the connector and check again. If the issue remains, please send an email to support@freenove.com.