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Homefixer ESP8266 devboard

A lightweight and simple devboard for ESP8266-12 with 2.54mm breadboard pinout and works with 1V-5.5V batteries

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I wanted a simple way to do quick battery powered prototypes with ESP8266-12 that can be hidden away in a small box. So this project is about making a small and beginner friendly devboard with all functions I can think of for doing quick IoT projects so that we can connect everything. Sort of one-click-connect sensor to cloud.

Version 1:
0.5-5.5V power input to be able to run on many kind of batteries using TPS61201.
2.54mm pinout of GPIO spaced so it will be easy to put the devboard on a breadboard.
Pullup/down resistors attached for boot, deepsleep, chip enable.
Deepsleep output prewired to reset
ADC connected to a voltage divider from the battery.



Version 2: Comment on ideas below :) I want something really small but with a lot of functions and still lowpower, I thinking USB programming and an even smaller board

  • USB2serial (Candidate: CP2101)
  • Even smaller board (0.1" smaller width to work on my breadboard, as small as possible in length)
  • LiPo charging (so you can use your old nokia battery to power your things) (Candidate: https://www.sparkfun.com/products/11231)
  • Disconnetable ADC measurement of battery for even lower power when not used. (Candidate: One transistors with capacitor on gate to disconnect the high side to prevent to high voltage on the input compared to low side one transistor)

    12F_V2_usb_chr_swsup.zip

    The complete project for v2. It's a draft so some issues with DRC, will fix them soon

    x-zip-compressed - 353.65 kB - 06/11/2017 at 15:49

    Download

    gerberfinalv1.zip

    Manufacturing files for 3x3 panelized board. Works with seeedstudio

    x-zip-compressed - 162.99 kB - 04/05/2017 at 18:48

    Download

    Adobe Portable Document Format - 67.24 kB - 03/29/2017 at 21:00

    Preview Download

    • 5 × 10k R0603
    • 3 × 10u C0805
    • 2 × 500k R0603
    • 1 × TSP61201 0-5-5.5V in 3.3V out converter
    • 1 × 2.2u L 3x3mm Inductance for the converter

    View all 4 project logs

    View all instructions

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