aerobotics

Solar street light control system

Overview

Solar charging: The traditional lithium battery charging chip TP4056 uses a 6V solar panel to charge the 3.7V18650 battery. Data shows that the voltage of the 18650 battery should not be lower than 2.7V, so the MT3608 startup pin EN pin of the subsequent power supply circuit (5V boost circuit) is connected to a voltage comparator made of LM393. Compared with the battery voltage, if the battery voltage is lower than 2.7v, the MT3608 start pin is pulled low and shuts down.

Power supply: Use the boost chip MT3608 to power the microcontroller to stabilize the battery voltage at 5.1V to provide stable voltage.

Figure 1 Actual smart street light controller

OLED display: 0.96-inch OLED display panel to display the current time, the on and off status of the light, and at the same time enter the secondary menu and adjust the light.

Light sensor circuit: Use the remaining operational amplifier inside the LM393 to adjust the light sensor sensing range, see the schematic diagram for details. (Some private chat programs for friends have been posted below)

Design Files

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Update:2025-06-20 00:27:17

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