“SOLAR TRACKING BASED MOBILE CHARGER WITH BATTERY VOLTAGE ANALYZER USING ARDUINO”. International Journal of Advance Engineering and Research Development (IJAERD) 5, no. 4 (April 25, 2018): 1102–1105. Accessed September 9, 2025. https://www.ijaerd.org/index.php/IJAERD/article/view/5057.