SDK Lightswitch Demo

RE: SDK Lightswitch Demo

Bjørn Kvaale — Wed, 29 Nov 2017 14:51:41 GMT

Very cool Matt! This might be interesting for you @enigma_231

RE: SDK Lightswitch Demo

Matt — Tue, 28 Nov 2017 18:26:21 GMT

Interestingly there is an upcoming BLE webinar on "true x-y positioning" in an indoor environment using "angle of arrival and received signal strength" (pages.bluetooth.com/webinar-fathom.html). You may want to check out that webinar to see if there is something you can make good use of for your project.

RE: SDK Lightswitch Demo

Bjørn Kvaale — Thu, 23 Nov 2017 13:09:52 GMT

I agree with Matt. RSSI is not a good indicator of distance (see this devzone case). The GPS modules used in the long range demo test are these ones. I'm guessing you could get cheaper gps modules, but then you would have to be willing to sacrifice some distance accuracy.

RE: SDK Lightswitch Demo

Matt — Thu, 23 Nov 2017 03:27:02 GMT

Well, you need to get the GPS modules from Sparkfun if you really want to calculate the distance between the two nRF52: the transmitter sends its own gps location to the receiver, the receiver then calculates the distance based on its own gps data and the gps data from the transmitter.

RE: SDK Lightswitch Demo

enigma_231 — Wed, 22 Nov 2017 19:07:13 GMT

Fixed "Link", thanks for your replies Matt!

RE: SDK Lightswitch Demo

Matt — Wed, 22 Nov 2017 19:01:09 GMT

Your "Link" points to nowhere, and if you figure out the distance calculation magic please share that with us mortals here :)

RE: SDK Lightswitch Demo

enigma_231 — Wed, 22 Nov 2017 18:31:50 GMT

I saw this demo, LINK I saw this demo,link text and assumed this could be calculated somehow, but I am not sure how it's implemented. I got the LightSwitch demo to upload to my board just to see if I can get the two boards to communicate. But I need to also see about getting distances between two chips someway.

and assumed this could be calculated somehow, but I am not sure how it's implemented. I got the LightSwitch demo to upload to my board just to see if I can get the two boards to communicate. But I need to also see about getting distances between two chips someway.

RE: SDK Lightswitch Demo

Matt — Wed, 22 Nov 2017 18:15:50 GMT

You can find the mesh compatibility info in the Nordic Semiconductor infocenter infocenter.nordicsemi.com/index.jsp Software Development Kit > nRF5 SDK for Mesh > nRF5 SDK for Mesh v0.10.0-alpha

How do you plan to "calculate" the distance between the two nRF52840? The received rssi values will not be a good indicator of the distance for sure.