user54706: I'm looking for a cheap and small bluetooth board for a project.
I found this one, but I find this one too expensive, are there cheaper alternatives, in similar size?
Thank you!

user4143: I'd suggest investigating the ESP32.
It's not only a far more powerful chip than any normal Arduino, but it has both WiFI and Bluetooth Low Energy, all on the one chip.
It's available as surface mount modules, similar to the ESP8266, and there are a number of small development boards that have been created around it as well.

54706: <p>I'm looking for a cheap and small bluetooth board for a project.
I found <a href="https://www.dfrobot.com/product-1259.html" rel="nofollow noreferrer">this</a> one, but I find this one too expensive, are there cheaper alternatives, in similar size?</p>

<p>Thank you!</p>
 4143: <p>I'd suggest investigating the ESP32.</p>

<p>It's not only a far more powerful chip than any normal Arduino, but it has both WiFI <em>and</em> Bluetooth Low Energy, all on the one chip.</p>

<p>It's available as surface mount modules, similar to the ESP8266, and there are a number of small development boards that have been created around it as well.</p>
