Rajesh Babu, Damala, and M. Rambabu. “Time Lapse Based Single Axis MPP Tracking System for Solar Tree by Using Arduino Duemalinove Board”. International Journal of Engineering & Technology, vol. 7, no. 4.25, Nov. 2018, pp. 271-7, https://doi.org/10.14419/ijet.v7i4.25.26937.