IA Pairing loses position

Frequent questions asked online, offline, in forums are answered here
Post Reply
Posts: 1
Joined: Wed Nov 09, 2022 11:35 am

IA Pairing loses position

Post by Abisysa »


I have read the forum and did not find anything like this. There is a similar topic regarding IA hedgehog problems but it was because he did not have beacons with different frequencies.

I have 6 different Super Beacons, of wich 4 have different frequencies and 2 have the same and a 5.1HW modem. I have uploaded the IA firmware to all beacons and modem and reset them all.

I have created a submap and a map with its service zone with 3 fixed super beacons (all with different frequencies). I am also able to track the position of two mobile beacons which have the same frequency (25Khz). Until here everything is perfect, the positioning of each beacon moves in +- 1cm.

The problem comes when I try to pair them. I paired them and modify the values for the distance and position between them. At this moment they both dissapear from the dashboard and I cannot see their position nor orientation. I have also tried to do this with two super beacons with different frequencies but I get the same result. I have tried to pair them via UART following the steps in the manual.

When uploading NIA firmware to all beacons and modem I can pair them with the same map and same distance between paired beacons. Somehow this does not work when working in IA mode.

Thank you,

User avatar
Site Admin
Posts: 400
Joined: Tue Jan 26, 2016 6:06 pm

Re: IA Pairing loses position

Post by admin »

The answer consists of several parts/dimensions. Thus, you shall assess your problems and solve it from several dimensions as well.

1) Do it in small steps
Before going to any pairing:
- Achieve perfect tracking with a left hedge
- Then - with the right hedge. Absolutely independently from the left. You can even turn off the left one
- Repeat the same with both but in non-paired mode
- Make sure the distances are set right in the Dashboard, and they really match the real distance
- Make sure you are not mixing up left and right
- Make sure your map is inverted (left and right on the map is not mixed up)
- Only after that attempt to pair the beacons

2) The setup with 6 stationary beacons is not entirely clear ... Make sure there are no mistakes with frequencies:
- https://marvelmind.com/pics/building_submaps.pdf
- https://youtu.be/B5pPsCsZjB8
- https://youtu.be/nCyp3wYZxak
IA is very powerful but it may be too easy to make mistakes with it.

3) Do you really need three beacons per submap?
- If you do 2D, then the optimal solution is either two or 2+2 beacons for Fully Overlapping Submaps. Three beacons mean 3D automatically. But 3 beacons for 3D is suboptimal because it would be prone to non-line of sight. Thus, we always recommend 3+1 per submap for 3D. But then, again, did you plan 3D really?

Post Reply