Sun Switch simple sun tracking electronic device

Step 5 Electronic circuit

Build the motor drive circuit. A large wattage ceramic resistor of a few ohms should be placed in series with the power supply to protect the circuit and motors from over heating during testing. This can be removed once the Sun Switch is completed.

Pin 2 - logic input to enable both outputs
Pin 4,5,6 - grounds
Pin 8 - output of second half bridge (motor drive)
Pin 9 - supply voltage to drive motors 12-24 volts
Pin 10 - output of first half bridge (motor drive)
Pin 11 - bootstrap to first half bridge output
Pin 12 - logic input (TTL) for first half bridge
Pin 13,14,15 - grounds
Pin 16 - logic input (TTL) for second half bridge
Pin 17 - bootstrap to second half bridge output
Pin 18 - internal reference voltage
C1 - 22mf 50volts electrolytic capacitor
C2 - .22mf SMD ceramic capacitor
C3,C4 - 10nf SMD ceramic capacitor
LEDs - 5mm 563nm Hi Green Water Clear
Drv - L6202 DMOS Full Bridge Driver