ESP8266 Community Forum

Hello from a newcomer!

This is a rather general request for guidance in the design of a printed circuit board based on ESP8266.

My IoT device is powered from 12V SLA battery + 5V DC. It wakes up every hour, requests data from API and depending on the response switches on two peripherals for about 1 minute - a 12 Volt DC 5 Amp motor via a relay and a 5V 1 amp actuator via a Darlington transistor or MOSFET.

I have prototyped my device with the luxuries of NodeMcu V3: external 5V feed to Vin, programming via USB, etc.

Now I would like to move to SMT PCB, with an option of requesting assembly by a PCB manufacturer.
The resulting device should run autonomously on a solar charged 12V battery.

On the PCB I am going to use:
ESP-12,
pre-built 12v/5v adjustable buck converter HW-411 (2 amp output, cheap on eBay and looks SMT compatible),
linear Voltage regulator 5V to 3.3V to feed ESP.

Any critical notes or suggestions on this plan?

Where can I find an example of PCB solution for ESP, preferably:
in Eagle,
including 3.3V supply,
with MOSFET output

A basic schematics would be also of great help.

BTW, what should be the wiring for SETUP and RESET buttons?

Thanks in advance,
Vax

There are at least three open hardware ESP-12 boards. open hardware means schematics and usually CAD files are available. NodeMCU is one. https://github.com/nodemcu/nodemcu-devkit-v1.0

Adafruit Huzzah and SparkFun Thing are the other two. I don't think any of them include MOSFETs.