Software

The Coding Language used for this system is C++ with the operating system as Linux on the Raspberry Pi. As it can be seen from the system diagram of the home page, the Raspberry Pi measures the generated voltage from the DC motor, adjusts the blade pitch accordingly using a PWM (Pulse-Width-Modulation) Proportional Controller and displays these information on the Linux Terminal.

Generated Voltage Measurement

As stated in Electronics, an ADC (ADS1015) is used to allow the Raspberry Pi to read analog signals. It has a programmable gain from 2/3x to 16x to amplify small signals and read them with higher precision. A written c++ library for using the ADC can be found on https://github.com/hallgrimur1471/Adafruit_ADS1X15_RPi.

Blade Pitch PWM Proportional Controller