solar tracker final test

FINAL TEST OF MY SOLAR TRACKER DUAL AXIS. USING: IC LM339 OP AMP DIFFERENTIAL IC. SENSOR USED: LED. POWER SUPPLY: 2X 6VOLTS BAT. = 12V. SOLAR PANEL: SIZE: 8X12inches 12V Output.. time tested, around 8 to 9 0 clock AM. Diagram: visit my other vid: