https://devzone.nordicsemi.com/f/nordic-q-a/37661/nrf52-quadcopter-design-statusHi is the design (including schematics and pcb design) for nrf52 quadcopter is working one on the GitHub ( https://github.com/NordicPlayground/nrf52-quadcopter ) without any modifications or we need to modify or improve for proper functioning. en-USTelligent Community 13Tue, 21 Aug 2018 09:14:20 GMThttps://devzone.nordicsemi.com/thread/145066?ContentTypeID=1Tue, 21 Aug 2018 09:14:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:61558805-59ce-4091-8f37-67e7f5cdb177Jan Tore Guggedal<p>Hi Capricorn,<br /><br />The schematics and PCB design should work without modification. However, be aware that not all components may be possible to get hold of now, in particular the barometric sensor and potentially others as well.&nbsp;</p> <p><br />As for improving the design, switching to nRF52840 should be considered. It would for example provide BLE long range, and more GPIOs. More GPIOs could be used to move to SPI communication instead of I2C for increased communication speed with the IMU.&nbsp;<br />The firmware code is a messy fusion of Bitcraze&#39; Crazyflie and multiple student projects, and I would recommend doing a rewrite for cleaner code and&nbsp;fewer bugs.<br /><br /><br /><br />Best regards,<br />Jan Tore<br /><br /></p><div style="clear:both;"></div>