Circuit Documentation

Summary of the Circuit

This circuit integrates various components to perform a set of functions that are not explicitly defined in the provided information. However, based on the components and connections, we can infer that the circuit is designed to interface an Arduino UNO with an ESP8266 ESP-01 WiFi module, a DHT11 temperature and humidity sensor, a current sensor, and a charging module for a Li-ion battery powered by a solar panel. The circuit includes LED indicators and a rocker switch for user interaction.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• It has 14 digital input/output pins, 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header, and a reset button.

TP4056

• A complete constant-current/constant-voltage linear charger for single-cell lithium-ion batteries.

LED: Two Pin (red)

• A red light-emitting diode used as an indicator.

18650 Li-ion Battery

• A standard size rechargeable battery used in laptops, flashlights, and various other devices.

Solar Panel

• A photovoltaic panel designed to absorb the sun's rays as a source of energy for generating electricity.

Resistor (150 Ohms)

• A passive two-terminal electrical component that implements electrical resistance as a circuit element.

Rocker Switch

• An on-off switch that rocks (rather than trips) when pressed.

Current Sensor

• A device that detects electric current in a wire and generates a signal proportional to it.

LED: Two Pin (green)

• A green light-emitting diode used as an indicator.

DHT11 Sensor V2

• A basic, ultra low-cost digital temperature and humidity sensor.

ESP8266 ESP-01 WiFi Module

• A self-contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network.

Resistor (200 Ohms)

• Another passive two-terminal electrical component used to create resistance in the flow of electric current.

Wiring Details

Arduino UNO

• 3.3V connected to ESP8266 ESP-01 WiFi Module CH_PD and VCC
• 5V connected to DHT11 Sensor V2 VCC and current sensor Vcc
• GND connected to DHT11 Sensor V2 GND, ESP8266 ESP-01 WiFi Module GND, and current sensor gnd
• A0 connected to DHT11 Sensor V2 DAT
• A4 connected to current sensor SCl
• A5 connected to current sensor Sda
• D3 connected to ESP8266 ESP-01 WiFi Module RXD
• D2 connected to ESP8266 ESP-01 WiFi Module TXD

TP4056

• OUT- connected to LED (red) cathode
• B- connected to 18650 Li-ion Battery -
• B+ connected to 18650 Li-ion Battery +
• OUT+ connected to rocker switch input
• IN- connected to LED (green) anode and solar panel -
• IN+ connected to solar panel + and current sensor vin +

LED: Two Pin (red)

• anode connected to Resistor (150 Ohms) pin2

LED: Two Pin (green)

• cathode connected to Resistor (200 Ohms) pin2

Resistor (150 Ohms)

• pin1 connected to rocker switch output

Resistor (200 Ohms)

• pin1 connected to current sensor Vin -

Documented Code

Arduino UNO Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Note: The provided code is a template and does not contain any functional code. It is expected that the user will fill in the setup and loop functions with code that initializes the connected components and defines the main behavior of the circuit.