Arduino Nano: https://www.amazon.co.uk/gp/product/B015MGHH6Q/ref=oh_aui_detailpage_o09_s01?ie=UTF8&psc=1 9 Degrees of Freedom IMU: https://www.aliexpress.com/item/GY-85-BMP085-Sensor-Modules-9-Axis-Sensor-Module-ITG3205-ADXL345-HMC5883L-6DOF-9DOF-IMU-Sensor/1729723444.html?spm=2114.13010608.0.56.6vYhPq GPS-I2C Converter: https://www.amazon.co.uk/gp/product/B00O7JJ3J4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 Heli Kit: https://www.amazon.co.uk/Gartt-CopterX-Flybar-Version-Helicopter/dp/B016ZNXUUC/ref=sr_1_1?ie=UTF8&qid=1473673941&sr=8-1&keywords=copterx
D1 Mini Pro (ext. antenna): https://www.aliexpress.com/item/WEMOS-D1-mini-Pro-16M-bytes-external-antenna-connector-ESP8266-WIFI-Internet-of-Things-development-board/32724692514.html?spm=2114.13010608.0.64.6vYhPq Battery Board for above: https://www.aliexpress.com/item/Battery-Shield-For-WeMos-D1-mini-single-lithium-battery-charging-boost/32701622185.html?spm=2114.13010608.0.87.6vYhPq