# Measure latency over WiFi on PX4

**URL:** <https://discuss.px4.io/t/measure-latency-over-wifi-on-px4/16609>\
**Category:** Uncategorized\
**Created:** [May 6, 2020, 10:20am UTC](https://discuss.px4.io/t/measure-latency-over-wifi-on-px4/16609 "2020-05-06T10:20:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Iolo](https://discuss.px4.io/user_avatar/discuss.px4.io/iolo/32/6100_2.png) [@Iolo](https://discuss.px4.io/u/Iolo)\
**Post date:** [May 6, 2020, 10:20am UTC](https://discuss.px4.io/t/measure-latency-over-wifi-on-px4/16609/1 "2020-05-06T10:20:32Z")

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Hi 🙂 ,

I would like to measure the latency over WiFi on my PX4 on both directions but I have only the PixRacer R15 board and the Wifi module, not the entire HW drone. Is there any possibility to measure the latency without the complete HW drone? I used the mavSDK-Python version and jMavSim to communicate with the drone but in virtual mode. In this mode I can not measure the latency, only to run some example in order to see how to communicate with the drone in a virtual simulation. Also, I found out that there is a possibility to measure the latency through the PING from QGroundControl-\> MAVLink Inspector. So, I have some questions:

1. Do I need the entire Hw drone to measure this latency through the QGC?
2. What others possibilities do I have in order to measure this latency?
3. Do I need the entire Hw drone to run the examples from mavSDK on the Px4 board? MavSDK-\>example is the way I chose to communicate with PX4 from my PC but without results. I could not communicate with the PX4 board through this examples.

Thanks. Grateful for any help.🙂