Need genral guidance on radio device

[robscott]

I need a cheap 2 or 3 button fob or itag to connect to/control my NRF51 firmware. So far I only could find "AB Shutter 3" as input device with >1 button but it is using Bluetooth V3. I'm considering adding the necessary subset of Bluetooth V3 processing to NRF51 to accomplish this but I'm not sure how big of a project that will be. Need something working within a week. Is this reasonably do-able as my first radio device project? Any basic suggestions appreciated. I use Eclipse & armgcc Thanks.

[RK]

You can't add support for Bluetooth V3, that's original Bluetooth, not Bluetooth Low Energy which started at V4. So the hardware doesn't even support it, Nordic chips are BLE only. So you're going to need to find another button product, or build one yourself.

[robscott]

Thankls for your quick answer. I was in doubt because the Nordic doc said "The 2.4 GHz radio transceiver is compatible with multiple radio standards, such as 1 Mbps and 2 Mbps Bluetooth low energy, as well as Nordic's proprietary 1 Mbps and 2 Mbps modes of operation."

Looking into it I see there are differences at the physical layer between ble and classic bluetooth which I cannot get around even bypassing the softdevice.