These typically cost between $10 and $20. Bluetooth can be added to these, and other boards which do not come with Bluetooth, using a Bluetooth shield or a serial to Bluetooth module. The popular Mega and Due families of boards do not come with Bluetooth built-in. The higher end boards (Vidor and Portenta) come with Bluetooth as well, though I’ve found they generally serve more niche applications than the general purpose boards (Nano, UNO, MKR etc.).

The UNO and MKR families also come with a model that supports Bluetooth as well (the WiFi Rev 2 and the WiFi 1010 respectively). Typically the Arduino nano family is designed to work well in Bluetooth Low Energy applications, as well as function in regular Bluetooth modes as well. The following Arduino boards come with Bluetooth built-in: I’ve since learnt that there are a multitude of options for using Bluetooth with Arduino and I put together this guide to help anyone else figure out what they need to get started with Arduino and Bluetooth. At the time I didn’t know what project I wanted to build (I was more interested in getting back to my electronic engineering roots) and figured I’d get an Arduino with at least Bluetooth.

I found it hard when I first started out with Arduino to figure out which boards had Bluetooth, WiFi, and other connectivity features.

Wifi vs bluetooth electronics