BLHeli ESC Calibration And Throttle Setup

Here is how I calibrate the min/max throttle on my Little Bee ESC's using BlHeli Suite and Cleanflight, followed by the transmitter setup to minimise the throttle deadband. This is an alternative to the common method of using the motor tab in Cleanflight. After lots of faulty calibrations and a serious accident using the motor tab method a mate put me on to this and I've never had an issue.
For this quad I had to use an Arduino Nano to communicate with the ESC's because it has a Motolab Tornado flight controller that doesnt support one wire pass through programming for BlHeli Suite. Many other flight controllers support the BlHeli Suite programming through Cleanflight option so the Arduino is not necessary.