Hello, I’d like to inquire about a possible frequency dropping issue with the Maixsense A010 sensor.
ROS Topic Frequency Fluctuation Issue
While using the Maixsense A010 device, I observed variations in the frequency of ROS (Robot Operating System) topics.
When the device is connected directly: The frequency is about 8 Hz.
[Direct to PC]
average rate: 7.742
min: 0.040s max: 6.969s std dev: 0.07520s
When the device is connected via a USB hub: The frequency is about 15 Hz.
[Hub]
average rate: 14.663
min: 0.040s max: 0.102s std dev: 0.00996s
And here's the capture for the packet stream. There's a difference between packet size following the connection (with hub, without hub).
I also suspected there's a electronic issue in there so i checked the current with powermeter. but same current whether hub exists or not.
Question: What causes this frequency fluctuation? Additionally, if there are any solutions or configuration methods to ensure a stable frequency, please let me know.
USB 1.1 Connection Intent
I have confirmed that the Maixsense A010 device is recognized in USB 1.1 mode when connected to the computer.
Question: Was there a specific reason for intentionally connecting in USB 1.1 mode? In particular, in relation to the frequency fluctuation issue when connected through a USB hub, how does USB 1.1 connection affect it?
Hello, I’d like to inquire about a possible frequency dropping issue with the Maixsense A010 sensor.
ROS Topic Frequency Fluctuation Issue
While using the Maixsense A010 device, I observed variations in the frequency of ROS (Robot Operating System) topics.
When the device is connected directly: The frequency is about 8 Hz.
[Direct to PC]
average rate: 7.742
min: 0.040s max: 6.969s std dev: 0.07520s
When the device is connected via a USB hub: The frequency is about 15 Hz.
[Hub]
average rate: 14.663
min: 0.040s max: 0.102s std dev: 0.00996s
And here's the capture for the packet stream. There's a difference between packet size following the connection (with hub, without hub).
I also suspected there's a electronic issue in there so i checked the current with powermeter. but same current whether hub exists or not.
Question: What causes this frequency fluctuation? Additionally, if there are any solutions or configuration methods to ensure a stable frequency, please let me know.
USB 1.1 Connection Intent
I have confirmed that the Maixsense A010 device is recognized in USB 1.1 mode when connected to the computer.
Question: Was there a specific reason for intentionally connecting in USB 1.1 mode? In particular, in relation to the frequency fluctuation issue when connected through a USB hub, how does USB 1.1 connection affect it?