This is a placeholder topic for “Ultra-Wide-Band Positioning Development Kit (UWB, BU-03)” comments.
Have you ever wanted the position between 2 objects? These modules output exactly that!
Read moreIs it true you can only track one tag in total?
Hey @Or301865,
Yes and no. With what we covered here we are only able to track one tag, but if you go down the rabbit hole of AT commands, it is possible to set these up in a mode that allows for multiple tags. This is not very beginner friendly though, and the documentation gets a little poor here. You will find some examples on this AI Thinker forum page (which needs translation). We also have a full AT command list here that might be of great help.
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I wish these could be shipped to the US. Hopefully that will change soon.
Hi @neelio and welcome to the forum,
Its rough at the moment with shipping. According to Australia Post:
Australia Post: “Due to recently announced changes to import tariffs for postal items sent to the US and Puerto Rico, Australia Post has temporarily suspended some postal services to these destinations, effective 26 August 2025 until further notice.”
Hopefully something will change soon and you can get back to making!
I was debating on wether to make a seperate forum post or just post here. Ill post here, however am more than happy to make a seperate post if need be.
I have been super interested in this item, as a project I have been planning for a few years now has needed something, basically exactly like this. I have considered RTK systems (but for the amount I would need, would cost far too much), lora systems, and this just seems like a good option for my problem, however, my main issue with this is I am unable to find this as a standalone pcb/board item, and not a devkit. I can of course just purchase a devkit and desolder/re-solder the board onto another project, but I have a feeling buying the BU-03 module standalone might actually be cheaper and would be easier for end production stuff. I have looked on the usual sites like digikey, mouser, even tried aliexpress and of course here, but have just not seen any of them in a non-devkit form. It seems pretty unusual for something that is labelled as a devkit.
Just to be clear, im not looking for the dedicated chip thats inside im looking for the small PCB item (similar to how you can purchase espressif’s esp32 modules, in the SoC, module or devkit forms).
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Hi @MPlaty
Welcome back!
While it may be a bit cheaper the dev-kit simplifies a lot of the communications and filtering required to get these board running as smooth as they do.
When bringing these on our supplier did mention the SoC’s were available but, not enough of the ‘pizzaz’ was inside the sheild to warrant us bringing them on at the time.
Jaryd gets into some of the details on this post: Indoor localization with UWB - Question
In the future there might be a Makerverse module that saves space and cost - but we’ve got some pretty neat projects happeneing behind the scenes right now!
Liam
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It seems the board uses SPI for communication, and if I understand correctly, the dev-kit then translates that SPI to AT commands over UART. I feel like SPI should be significantly faster for communcation and updates (and quite possibly has a wider featureset that they didn’t implement with the AT commands).
I might’ve worded it poorly in my first comment or you might’ve mistaken me or I could be understanding wrong, but the image below is exactly the part im looking for:
I know for a fact radio signal “calibration” (wrong word but should still get the point across) is not an easy thing to do.
If it turns out there is any somewhat decent suppliers I can find for these boards, I will definitely be investing in a few devkits to actually see if these devices will even fit this peoject.
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Hi @MPlaty,
The SoM’s do use SPI, however they also perform the filtering and communications layer above the required device driver. Giving location out of the box.
If you are keen to get your hands on some modules, feel free to get in touch with us and we can discuss!
Liam
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