Daily coffee counter ☕

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This project describes one way (out of many) to build a custom counter using only things that are available in HA. No code is needed, only configuration. I have chosen to use it to count number of cups of coffee I drink every day, but you can use it for basically anything. To read an even more detailed description of this project, you can find an in-depth post at Github.

The idea is to create a counter that easily can be incremented over the internet. I use three things; an input_number, automations, and the webhook api.

First I set up an input_number:

input_number:
  coffee_counter:
    name: Coffee counter
    initial: 0
    min: 0
    max: 25
    step: 1
    mode: box
    unit_of_measurement: cups

Then, I add an automation listening to a webhook.

- alias: Increment coffee counter
  trigger:
    platform: webhook
    webhook_id: coffee
  action:
    service: input_number.set_value
    data_template:
      entity_id: input_number.coffee_counter
      value: "{{ 1 + (states.input_number.coffee_counter.state | int) }}"

For the sake of clarity I used a short webhook id named coffee, but in a real setup it should be replaced (mainly for security reasons).
Now we have set up our homeassistant to trigger each time we do a POST request with Content-Type: application/json to our endpoint at http://example-ha.duckdns.org:8123/api/webhook/coffee.

The third step is to set up an automation that resets the counter every day at midnight.

- alias: Reset coffee counter
  trigger:
    platform: time
    at: '00:00:00'
  action:
    service: input_number.set_value
    data_template:
      entity_id: input_number.coffee_counter
      value: 0

Finally I add a history graph card to show the data in the UI.

- type: history-graph
  entities:
    - input_number.coffee_counter
  title: Coffees
  hours_to_show: 120

The HA part is now done, the system is ready to accept incoming requests. I am currently using HTTP Shortcuts to generate an icon on my home screen, which I then just tap to trigger the webhook automation. In the app, I specify url, add header Content-Type: application/json, and specify the request body as an empty object {}.

The result is a really easy to use shortcut which produces a chart showing the amount of coffee you drink every day.

coffee_chart

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2

I do the same, but do the monitoring automatically; every time the power consumption of my espresso machine drops to lower than 200watts it automatically counts it as 1 espresso (which is more or less always correct)

3

Oh, that is a really neat solution! I am currently using a manual coffee press so there is no way of really measuring anything digitally. I also assume that you can use the same technique with other white goods as well :slight_smile:

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Yep; this is also the same approach as I took in making my washing machine and dryer ‘smart’. They now give me an app notification and a TTS notification in the living room whenever they are ready.

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5

Hello fversteegen,

your entry is a bit older but could you possibly give me the code for your washing machine. Unfortunately I can’t get any further.
Thank you.

6

Wrong person answering but was just discussing this in another thread :smile: I use the same set up now too, and I followed this guide from Phil Hawthorne: Making ‘dumb’ Dishwashers and Washing Machines Smart: Alerts When the Dishes and Clothes Are Cleaned – Phil Hawthorne

It has all the basic features, and if you want, it even has examples for sending notificans and how to delay them if you are not home.