Circuit Documentation

Summary

This document provides a detailed overview of a circuit design that includes an ESP32 microcontroller, an AMS1117 3.3V voltage regulator, and a 2.1mm DC Barrel Jack. The circuit is designed to power the ESP32 using a DC power source through the barrel jack, with the AMS1117 regulating the voltage to 3.3V.

Component List

ESP32

• 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, 3V3, D15, D2, D4, RX2, TX2, D5, D18, D19, D21, RX0, TX0, D22, D23, BOOT
• Purpose in Circuit: Main processing unit.

AMS1117 3.3

• Description: A voltage regulator that steps down the input voltage to 3.3V.
• Pins: VIN, OUT, GND
• Purpose in Circuit: To provide a stable 3.3V power supply to the ESP32.

2.1mm DC Barrel Jack

• Description: A standard DC power jack for connecting an external power supply.
• Pins: switch, sleeve, center
• Purpose in Circuit: To receive power from an external DC power source.

Wiring Details

ESP32

• GND: Connected to GND of AMS1117 3.3.
• VIN: Connected to OUT of AMS1117 3.3.

AMS1117 3.3

• GND: Connected to GND of ESP32.
• OUT: Connected to VIN of ESP32 and switch of 2.1mm DC Barrel Jack.
• VIN: Connected to center of 2.1mm DC Barrel Jack.

2.1mm DC Barrel Jack

• switch: Connected to OUT of AMS1117 3.3.
• center: Connected to VIN of AMS1117 3.3.

Code

There is no code provided for this circuit.

---

This document provides a comprehensive overview of the circuit, including a summary, detailed component descriptions, wiring details, and code documentation.