The read packet latency and packet loss of Dynamixel Servo

[HoEmpire]

Describtion

• Use the old original way of Servo read read4ByteTxRx it takes 70ms to read 12 Servos and with Packet loss problem
• Use the syncread it takes 18ms to read 12 Servos and also with Packet loss problem

Solution

• It‘s a problem of some kinds of authority of Ubuntu16.04
• The following command before running the programm can solve the problem

echo 1 | sudo tee /sys/bus/usb-serial/devices/ttyUSB0/latency_timer

Perfomance after solving the problem

• Now we can read the 12 Servo in 3ms without packet loss

[hannbusann]

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