coffee-bin-mqtt

MQTT sensor project for CoffeeBin.

Features

• It uses deep sleep ,ode to save energy.
• It messures the volatage on bootup an send the result as MQTT message to the broker.
• It has an external status LED
• It has an switch to broadcast an MQTT message, that the coffe machine is in maintenance mode.

Hardware

• ESP8266 ESP12F

  • Flash Size: 32 Mbit
  • Flash Mode: DIO
  • Flash Speed: 40 MHz

• LED
• Switch
• Voltage sensor

Wiring

Download PDF [ 393kb ] | Download PNG [ 99kb ] | Download SVG [ 1.5mb ]

Development

Preparation

Install the USB driver for your ESP8266 and find out on which port your device is avaible. For convinience you can save that information in your ~/.bashrc or ~/.bash_profile file.

If you don’t wanna do that, you have to add the port to each command.

mos --port /dev/cu.SLAB_USBtoUART COMMAND

Build

You need to install Docker to build it locally.

git clone https://github.com/vergissberlin/coffee-bin-mqtt
cd coffee-bin-mqtt
mos build --platform ESP8266 --local --verbose
mos flash --esp-erase-chip --esp-baud-rate 115200 --esp-flash-params "dio,4m,40m"

Debugging and configuration

mos wifi --port /dev/cu.SLAB_USBtoUART WIFI-SSID WIFI-PASSWORD
mos console --port /dev/cu.SLAB_USBtoUART

Upload files

mos put --port /dev/cu.SLAB_USBtoUART fs/init.js

Table of content

• Requirements
• Configuration
• Contribute