Circuit Documentation

Summary

This circuit involves an ESP32 microcontroller, an ESP32-CAM module, a 7805 voltage regulator, an AMS1117 3.3V voltage regulator, an MLX90614 infrared temperature sensor, and a 12V battery. The circuit is designed to power the ESP32 and ESP32-CAM modules, and interface the ESP32 with the MLX90614 sensor for temperature measurements.

Component List

1. ESP32 (30 pin)

   • Description: A powerful microcontroller with Wi-Fi and Bluetooth capabilities.
   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, Vin, D23, D22, TX0, RX0, D21, D19, D18, D5, TX2, RX2, D4, D2, D15, 3V3

2. 7805

   • Description: A voltage regulator that outputs 5V.
   • Pins: Vin, Gnd, Vout

3. MLX90614

   • Description: An infrared temperature sensor.
   • Pins: SDA, SCL, GND, VIN

4. GND

   • Description: Ground connection.
   • Pins: GND

5. Electrolytic Capacitor

   • Description: A capacitor with a capacitance of 1µF.
   • Pins: -, +

6. ESP32-CAM

   • Description: A camera module with an ESP32 microcontroller.
   • Pins: 5V, GND, IO12, IO13, IO15, IO14, IO2, IO4, VOT, VOR, VCC, IO0, IO16, 3V3

7. 12V Battery

   • Description: A 12V power source.
   • Pins: -, +

8. AMS1117 3.3

   • Description: A voltage regulator that outputs 3.3V.
   • Pins: VIN, OUT, GND

Wiring Details

ESP32 (30 pin)

• D12 is connected to SDA of the MLX90614.
• D13 is connected to SCL of the MLX90614.
• Vin is connected to OUT of the AMS1117 3.3.
• TX2 is connected to IO4 of the ESP32-CAM.
• RX2 is connected to IO2 of the ESP32-CAM.

7805

• Vin is connected to + of the Electrolytic Capacitor and + of the 12V Battery.
• Gnd is connected to - of the Electrolytic Capacitor and GND.
• Vout is connected to VIN of the MLX90614, 5V of the ESP32-CAM, and VIN of the AMS1117 3.3.

MLX90614

• SDA is connected to D12 of the ESP32.
• SCL is connected to D13 of the ESP32.
• GND is connected to GND.
• VIN is connected to Vout of the 7805.

ESP32-CAM

• 5V is connected to Vout of the 7805.
• GND is connected to GND.
• IO4 is connected to TX2 of the ESP32.
• IO2 is connected to RX2 of the ESP32.

Electrolytic Capacitor

• + is connected to Vin of the 7805 and + of the 12V Battery.
• - is connected to GND.

12V Battery

• + is connected to + of the Electrolytic Capacitor and Vin of the 7805.
• - is connected to GND.

AMS1117 3.3

• VIN is connected to Vout of the 7805.
• OUT is connected to Vin of the ESP32.
• GND is connected to GND.

Documented Code

There is no code provided for this circuit.