https://devzone.nordicsemi.com/f/nordic-q-a/6231/sdk-of-nrf51822-free-of-chargeHi I&#39;m starting with NRF51822. I&#39;m going to develop a costum PCB using this chip. I&#39;m a bit confused because searching on the forum I saw that I need a product key to use the SDK and other software? This is correct? Thank you, Regards Santiagoen-USTelligent Community 13Wed, 25 Mar 2015 23:13:12 GMThttps://devzone.nordicsemi.com/thread/21818?ContentTypeID=1Wed, 25 Mar 2015 23:13:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:67726eb6-eebb-4410-b729-3a690d04376cWojtek<p>You don&#39;t need product key anymore to access SDK, it is available at:</p> <p>developer.nordicsemi.com</p><div style="clear:both;"></div>