Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various sensors, a microcontroller, a power inverter, a heater element, and a battery. The circuit is designed to interface with an ESP32 microcontroller, which reads data from the sensors and controls the heater element. The power inverter is used to convert the battery's 12V output to a suitable voltage for the heater element.

Component List

1. PIR Sensor

   • Description: Passive Infrared Sensor
   • Pins: VDD, SIG, GND

2. BH1750

   • Description: Light Intensity Sensor
   • Pins: VCC, GND, SCL, SDA, ADDR

3. DHT22

   • Description: Temperature and Humidity Sensor
   • Pins: +, Out, -

4. ESP32 on Baseboard

   • Description: Microcontroller
   • Pins: GPIO23, GPIO22, GPIO1/TX, GPIO3/RX, GPIO21, GPIO19, GPIO18, GPIO5, GPIO17, GPIO16, GPIO4, GPIO0, GPIO2, GPIO15, SD1, SD0, CLK, V, G, GPIO36, GPIO39, GPIO34, GPIO35, GPIO32, GPIO33, GPIO25, GPIO26, GPIO27, GPIO14, GPIO12, GPIO13, SD2, SD3, GND, 5V, 3V, TX, RX, VCC, D22, D21

5. Power Inverter

   • Description: Converts 12V DC to a suitable voltage for the heater element
   • Pins: -, +

6. Heater Element

   • Description: Heating Element
   • Pins: VCC, GND

7. Battery 12V

   • Description: Power Source
   • Pins: -, +

Wiring Details

PIR Sensor

• VDD connected to 5V of ESP32 on Baseboard
• SIG connected to GPIO13 of ESP32 on Baseboard
• GND connected to G of ESP32 on Baseboard

BH1750

• VCC connected to 3V of ESP32 on Baseboard
• GND connected to GND of ESP32 on Baseboard
• SCL connected to GPIO22 of ESP32 on Baseboard
• SDA connected to GPIO21 of ESP32 on Baseboard

DHT22

• + connected to 5V of ESP32 on Baseboard
• Out connected to GPIO15 of ESP32 on Baseboard
• - connected to G of ESP32 on Baseboard

Battery 12V

• - connected to - of Power Inverter
• + connected to + of Power Inverter

Power Inverter

• + connected to VCC of Heater Element
• - connected to GND of Heater Element

Documented Code

There is no code provided for the microcontrollers in this circuit.

---

This document provides a comprehensive overview of the circuit, including a summary, a detailed component list, wiring details, and a section for documented code. This should serve as a useful reference for understanding and replicating the circuit.