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ESP-Hardware

This repository contains my collection of ESP-Related hardware designs

ESP-8285 Miniboard

Small DIL-size board for an ESP8285 Wifi microcontroller

There already are a bunch of ESP boards and modules around, but the either add a full programming circuit or are modules with small pins to solder.

This wants to combine the best of both, with standard 2.54mm pinheaders and easy programming, but on a separate board. So you plug in the programmer when you want to download firmware, but remove it when you don't need it anymore.

  • DIL size, plugs directly into a breadboard
  • Breaks out all IO pins, not an arbitrary selection like most modules
  • Antenna and crystal on board, ready to, just add power
  • Optional red power and blue tx LED, to see whats going on, can be removed to save power
  • No other, potentially unwanted hardware to get in the way of your design

ESP82xx Programmer

USB programmer built for the ESP-Miniboard, but it will work for normal ESP82xx circuits and most modules as well.

As the ESP-Miniboard has no programmer, you need it separately. So it goes on this second board, to be removed when no longer in use.

  • USB-Serial chip (CH340)
  • 3.3V Regulator to feed the ESP from USB during programming (no external power needed)
  • 3.3V supply has a jumper to disable power and a polyfuse to protect from a short
  • Nodemcu reset circuit to decouple the RTS/DTR lines from reset and GPIO0
  • Works with any ESP module, just connect up the pins and off you go !