ESPHome based AUX AC PCBA

October 19, 20241 min readBy STAN

Table of contents

What

This device is following this project LINK for ESPHome based AUX AC control. This project consists of full documentation for 2 layers PCB, equipped with power supply and ESP32 S3 WROOM 1 device.

Full documentation is available at our GITLAB: GITLAB CIRCUIT-ISSUES

SCH

The schematic LINK was generated using KiCad, consists of:

  • 5 pin 2.54mm connector
  • RP (reverse polarity) diode
  • SMPS based power supply (TPS562203)
  • ESP32 S3 WROOM 1
  • button for BOOT selection
  • resistors for UART protection

PCB

The resulting PCB has following features:

  • 2 layers PCB, 1.6mm thickness
  • 25x50mm (+connector overhang)
  • single side population

PCBA TOP
PCBA BOT

PINOUT

  • ESP TX
  • ESP RX
  • NC
  • GND
  • +SUP

BOUNDARY CONDITION

  • Supply voltage range from 4.8V to 17V
  • Reverse polarity protection down to -30V

REVISION 00

  • created SCH + PCB + PCBA
  • first production lot received
  • power supply, reset button, programming work

GETTING THE BOARD

Do You want to order ready to use board? Drop us an email at contact@circuit-issues.com or through contact form!

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