Hello,
since using Bluetooth requires an expensive qualification process, I am looking for a more affordable alternative for a startup/small business like me.
The only viable alternative I currently see is using a USB dongle with a protocol like Gazell to handle communication between my end device (peripheral) and a PC (host). Of course, a USB dongle significantly reduces flexibility as it requires an additional component and occupies a USB slot, but at the moment, it seems to be the only feasible solution.
I have been looking into the nRF52840 Dongle (https://www.nordicsemi.com/Products/Development-hardware/nRF52840-Dongle), which could serve as an interface to the host.
My question: Are there any smaller alternatives that are ideally in the form factor of common wireless mice and keyboards (as shown below). They should be CE/FCC/RoHS certified. I would like to be able to simply flash my software onto it without having to go through an additional certification process just for the host device.
I also happened to come across this post: https://hackaday.io/project/6741-crazyradio-for-cheapskates/details, where I noticed an nRF chip in the image as well.
Maybe dongles like these are available for custom software?
A secondary question: Which protocol (Gazell, ESB) would be better suited for sporadically transmitting large amounts of data (around 10KiB) every few minutes without packet loss?
Edit: Changed tag
