Are there "cables" that are just 2 bluetooth dongles that will interact with each other? I am looking for one for a custom mechanical keyboard. USB type c would be the best, but I think anything would do. Thanks!
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1I doubt something like this exists, as both ends are going to need power to communicate with each other.– CfinleyCommented Dec 12, 2017 at 15:37
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Wireless cables?? Devices like keyboards with bluetooth dongles exist that are power by the USB port on 1 side, and the keyboard has batteries on the other side. Obviously you have to change the batteries every couple months unless you integrate a charging stand and lthium ion batteries.– cybernardCommented Dec 16, 2017 at 2:57
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Here's an Arduino based solution lifehacker.com/… and an off-the-shelf solution handheldsci.com/kb– K7AAYCommented Sep 18, 2018 at 18:18
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1 Answer
You can obviously buy 2 USB bluetooth 4 le dongles.
- Gets power and CPU from the computer
- Gets power from batteries, but you need some kind of CPU.
Designing your own and getting it produced will take a lot of effort and money to get a company to agree to produce said circuit.
From the needlessly overpowered but easy solution department.
The Raspberry PI 2 (add bluetooth dongle) or 3 (built-in bluetooth)
- Hook up a BIG battery
- Hook the keys in the typical 11x11 or 12x12 fashion to the GPIO pins
- Write some code to do the translations and connect using the standard built-in bluetooth tools. In python should be very simple.
- Under clock it to the max possible and disable as much as possible to increase a pitiful battery life to a usable one.
