Search found 10 matches

by theRoboticist
Sun Feb 21, 2021 4:14 am
Forum: FAQ
Topic: Position jumps around a lot, could use help understanding why
Replies: 4
Views: 1581

Re: Position jumps around a lot, could use help understanding why

Thank you for the information. I have tried those suggestions with changing the maximum speed and adjusting window of averaging, but still have problems with the position jumping - even when the robot is sitting completely still with full line of sight for all beacons. The position will be very accu...
by theRoboticist
Mon Feb 15, 2021 7:07 am
Forum: FAQ
Topic: Position jumps around a lot, could use help understanding why
Replies: 4
Views: 1581

Re: Position jumps around a lot, could use help understanding why

Thank you very much for the suggestion. I changed the value from 5 to 50 and it helped quite a bit. The jumping was reduced substantially, but it didn't go away totally. I'd say the position is now stable 98-99% of the time but still with wild jumps every so often. Are there any other parameters tha...
by theRoboticist
Tue Feb 09, 2021 7:37 am
Forum: FAQ
Topic: Position jumps around a lot, could use help understanding why
Replies: 4
Views: 1581

Position jumps around a lot, could use help understanding why

I have found that the tracking for my use case is usually very good, but sometimes jumps around a lot for a few seconds before returning to normal. Even if the robot is just sitting still this sometimes happens. It happens even more if the robot is moving, but it is not all the time - maybe 80-90% o...
by theRoboticist
Mon Feb 01, 2021 4:38 pm
Forum: FAQ
Topic: Mini Rx batteries dead?
Replies: 1
Views: 730

Mini Rx batteries dead?

Hi, I have a few mini-rx beacons that have sat unused for a few months and do not seem to be able to connect to the dashboard. I have seen the other poses about similar problems and tried the solution presented in the manual (turn off, charge, then try to update), however I have been unable to get a...
by theRoboticist
Wed Aug 05, 2020 5:54 am
Forum: FAQ
Topic: Should mm_get_devices_list work on a beacon? Or only on modem?
Replies: 1
Views: 2959

Should mm_get_devices_list work on a beacon? Or only on modem?

I am trying to write some code for a raspberry pi with 2 mini-tx beacons attached (in paired mode). I am trying to get the list of devices to verify that the beacons I expect to be connected to the pi are indeed present and ready for operation. I am able to connect to a device and get the USB connec...
by theRoboticist
Sun Jan 19, 2020 1:36 am
Forum: FAQ
Topic: Will more stationary beacons improve accuracy?
Replies: 3
Views: 7011

Re: Will more stationary beacons improve accuracy?

Hmmm. I don't have an oscilloscope, but I may be able to find a friend who has one. I am in a fairly small room (about 5m by 10m right now) using 8Hz update rate. I will try reducing the rate and see if I get better tracking. I am planning to move to a bigger space in the future, but for now this wo...
by theRoboticist
Sun Jan 05, 2020 1:56 am
Forum: FAQ
Topic: Will more stationary beacons improve accuracy?
Replies: 3
Views: 7011

Will more stationary beacons improve accuracy?

I have a 2D planar robot that I am trying to track position of very accurately. I have 2 static beacons (mini-RX) and 2 mobile beacons on the robot (mini-TX) and I am using NIA. I am streaming data about the robot to my computer via the modem API but some of the data is a bit noisier and less accura...
by theRoboticist
Sat Nov 09, 2019 4:12 am
Forum: FAQ
Topic: How to get paired beacon data?
Replies: 5
Views: 5670

Re: How to get paired beacon data?

Hi smoker77, Okay I think I understand now. I have been using the precompiled .dll to read the data via the Marvelmind API and it appears that the precompiled .dll does not currently have the same data structure implemented to received paired data. It only has a mm_get_last_locations function which ...
by theRoboticist
Sun Oct 27, 2019 5:17 am
Forum: FAQ
Topic: How to get paired beacon data?
Replies: 5
Views: 5670

Re: How to get paired beacon data?

Hi smoker77, thank you very much for the reply. However, I don't think it quite answers my question. Unless I am mis-understanding, the structure you show and the document you linked only pertain to getting data directly from the mobile beacons themselves, right? I am specifically looking to read th...
by theRoboticist
Wed Oct 23, 2019 7:59 am
Forum: FAQ
Topic: How to get paired beacon data?
Replies: 5
Views: 5670

How to get paired beacon data?

I am just starting to work on integrating the marvelmind sensors with my robotic platform. I am using 2D NIA localization with 2 mini-TX and 2 mini-RX sensors. I would like to set up the 2 mini-TX sensors in 'paired mode' on my robot so that I can track position and orientation. I have a separate co...