Circuit Documentation

Summary of the Circuit

This circuit is designed to charge a 3.7V battery using a TP4056 charger module, with power supplied by a solar cell. It includes a battery indicator to monitor the charge status, a rocker switch to control the power flow, and a white LED as an indicator or for illumination. A diode is used to prevent reverse current from the battery to the solar cell. The circuit does not include any microcontroller or embedded code.

Component List

TP4056

• Description: A lithium battery charger and protection module.
• Pins: OUT-, B-, B+, OUT+, IN-, IN+

3.7v Battery

• Description: A rechargeable lithium battery.
• Pins: +, -

Rocker Switch

• Description: A switch to control the connection of the circuit.
• Pins: 1, 2

LED: Two Pin (white)

• Description: A white light-emitting diode.
• Pins: cathode, anode

Solar Cell

• Description: A photovoltaic cell that converts sunlight into electrical energy.
• Pins: +, -

Diode

• Description: A semiconductor device that allows current to flow in one direction only.
• Pins: cathode, anode

Battery Indicator

• Description: A module that indicates the charge level of the battery.
• Pins: Positive, Negative

Wiring Details

TP4056

• OUT- connected to the negative terminal of the 3.7v battery and the Negative pin of the Battery Indicator.
• B- connected to the cathode of the LED.
• B+ connected to pin 1 of the Rocker Switch.
• OUT+ connected to the positive terminal of the 3.7v battery.
• IN- connected to the negative terminal of the Solar Cell.
• IN+ connected to the cathode of the Diode.

3.7v Battery

• + connected to the OUT+ of the TP4056.
• - connected to the OUT- of the TP4056, the Negative pin of the Battery Indicator.

Rocker Switch

• 1 connected to the B+ of the TP4056.
• 2 connected to the Positive pin of the Battery Indicator and the anode of the LED.

LED: Two Pin (white)

• cathode connected to the B- of the TP4056.
• anode connected to pin 2 of the Rocker Switch and the Positive pin of the Battery Indicator.

Solar Cell

• + connected to the anode of the Diode.
• - connected to the IN- of the TP4056.

Diode

• cathode connected to the IN+ of the TP4056.
• anode connected to the positive terminal of the Solar Cell.

Battery Indicator

• Positive connected to pin 2 of the Rocker Switch and the anode of the LED.
• Negative connected to the negative terminal of the 3.7v battery and the OUT- of the TP4056.

Documented Code

There is no embedded code provided for this circuit as it does not include any programmable components or microcontrollers.