Solar-Powered LED Light with Battery Charging and Light Sensing
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Circuit Documentation
Summary
This circuit is designed to manage the charging and discharging of a 18650 Li-ion battery using a TP4056 Battery Charging Protection Module. It also includes a photocell (LDR) for light detection, a 7805 voltage regulator for stable 5V output, an IRFZ44N MOSFET for switching, a resistor, a solar cell for charging, and a high-power LED for illumination.
Component List
Photocell (LDR)
- Pins: pin 0, pin 1
- Description: Light-dependent resistor used to detect light levels.
- Purpose in Circuit: Senses ambient light to control the MOSFET.
TP4056 Battery Charging Protection Module (Type C)
- Pins: OUT +, B+, B-, OUT -, +, -
- Description: Module for charging and protecting a Li-ion battery.
- Purpose in Circuit: Manages charging of the 18650 Li-ion battery and provides protection.
7805 Voltage Regulator
- Pins: Vin, Gnd, Vout
- Description: Voltage regulator that outputs a stable 5V.
- Purpose in Circuit: Provides a stable 5V output for other components.
18650 Li-ion Battery
- Pins: +, -
- Description: Rechargeable lithium-ion battery.
- Purpose in Circuit: Provides power to the circuit.
IRFZ44N MOSFET
- Pins: Gate, Drain, Source
- Description: N-channel MOSFET used for switching.
- Purpose in Circuit: Controls the high-power LED based on the photocell input.
Resistor
- Pins: pin1, pin2
- Description: 10 Ohms resistor.
- Purpose in Circuit: Limits current to the LED.
Solar Cell
- Pins: +, -
- Description: Solar panel for charging the battery.
- Purpose in Circuit: Provides power to charge the battery.
Power LED 12V 10W 0.8-0.9A
- Pins: +, -
- Description: High-power LED for illumination.
- Purpose in Circuit: Provides light when activated by the MOSFET.
Wiring Details
Photocell (LDR)
pin 0 is connected to:
- 18650 Li-ion Battery (+)
- TP4056 Battery Charging Protection Module (B+)
- Resistor (pin2)
- IRFZ44N (Gate)
pin 1 is connected to:
- 18650 Li-ion Battery (-)
- TP4056 Battery Charging Protection Module (B-)
- IRFZ44N (Source)
TP4056 Battery Charging Protection Module (Type C)
B+ is connected to:
- Photocell (LDR) (pin 0)
- 18650 Li-ion Battery (+)
- Resistor (pin2)
- IRFZ44N (Gate)
B- is connected to:
- Photocell (LDR) (pin 1)
- 18650 Li-ion Battery (-)
- IRFZ44N (Source)
OUT + is not connected in this circuit.
OUT - is not connected in this circuit.
+ is connected to:
- 7805 (Vout)
- is connected to:
- Solar cell (-)
- 7805 (Gnd)
7805 Voltage Regulator
Vin is connected to:
- Solar cell (+)
Gnd is connected to:
- TP4056 Battery Charging Protection Module (-)
- Solar cell (-)
Vout is connected to:
- TP4056 Battery Charging Protection Module (+)
18650 Li-ion Battery
+ is connected to:
- Photocell (LDR) (pin 0)
- TP4056 Battery Charging Protection Module (B+)
- Resistor (pin2)
- IRFZ44N (Gate)
- is connected to:
- Photocell (LDR) (pin 1)
- TP4056 Battery Charging Protection Module (B-)
- IRFZ44N (Source)
IRFZ44N MOSFET
Gate is connected to:
- Photocell (LDR) (pin 0)
- 18650 Li-ion Battery (+)
- TP4056 Battery Charging Protection Module (B+)
- Resistor (pin2)
Drain is connected to:
- Power LED 12V 10W 0.8-0.9A (-)
Source is connected to:
- Photocell (LDR) (pin 1)
- 18650 Li-ion Battery (-)
- TP4056 Battery Charging Protection Module (B-)
Resistor
pin1 is connected to:
- Power LED 12V 10W 0.8-0.9A (+)
pin2 is connected to:
- Photocell (LDR) (pin 0)
- 18650 Li-ion Battery (+)
- TP4056 Battery Charging Protection Module (B+)
- IRFZ44N (Gate)
Solar Cell
+ is connected to:
- 7805 (Vin)
- is connected to:
- TP4056 Battery Charging Protection Module (-)
- 7805 (Gnd)
Power LED 12V 10W 0.8-0.9A
+ is connected to:
- Resistor (pin1)
- is connected to:
- IRFZ44N (Drain)
Code
There is no microcontroller code provided for this circuit.