Very Low Power Litterbox Scooper Tracker | ESPHome | Page 1

latent bison Jun 15, 2023, 7:10 AM

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A fun little extremely low power device to track who last scooped the litterbox and who has the high score. I wanted to 'gamify' one of our house chores. 🐱

This device uses no binary sensor for buttons. It gets woken up from deep_sleep, and then parses the gpio number that woke it up, updates the screen & home assistant, and goes back to sleep ASAP.

Parts used:

LilyGO TTGO T5 V2.3 ESP32 - with 2.13 inch E-paper E-ink
2 clicky buttons
2 100ohm resistors
some holed prototyping board
a LiPo battery
a bit of 3d printing magic

The magic of extreme low power comes from these two tricks:

deep_sleep:
  id: deep_sleep_1
  run_duration: 30s
  esp32_ext1_wakeup:
    mode: ANY_HIGH
    pins:
      - GPIO25
      - GPIO26

and on startup:

esphome:
  on_boot:
    - priority: -100
      then:
          - lambda: |-
              switch (esp_sleep_get_ext1_wakeup_status()) {
              case 1 << 25:
              ESP_LOGD("custom", "GPIO 25 woke me up");
              break;
              case 1 << 26:
              ESP_LOGD("custom", "GPIO 26 woke me up");
              break;
              default:
              ESP_LOGD("custom", "Something I dont know woke me up");
              }
          - component.update: t5_display

latent bison Jun 18, 2023, 1:17 PM

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Very Low Power Litterbox Scooper Tracker

pseudo bison Jan 2, 2024, 7:36 PM

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hi @latent bison !
I'm planning on buying the same device, but i want to be sure it will work before I buy it. Is this the one you are using? https://www.tinytronics.nl/shop/nl/development-boards/microcontroller-boards/met-wi-fi/lilygo-ttgo-t5-v2.3.2-esp32-met-2.13-inch-e-paper-e-ink-display
And can you share the display: part of your config? Especially the model of it.
Alvast bedankt 🙂

latent bison Jan 2, 2024, 7:50 PM

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nope, I got the SKU 002677 so https://www.tinytronics.nl/shop/nl/development-boards/microcontroller-boards/met-wi-fi/lilygo-ttgo-t5-v2.3-esp32-met-2.13-inch-e-paper-e-ink

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(paired with the SKU 001404 battery)

pseudo bison Jan 2, 2024, 7:52 PM

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Thanks! that one has a usb-serial built-in, so i don't have to order a separate one.

latent bison Jan 2, 2024, 7:52 PM

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yep

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en de display: code is

display:
  - platform: waveshare_epaper
    id: t5_display
    cs_pin: 5
    dc_pin: 17
    busy_pin: 4
    reset_pin: 16
    model: 2.13in-ttgo-b74
    full_update_every: 30
    update_interval: never
    rotation: 90

pseudo bison Jan 2, 2024, 7:53 PM

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❤️ bedankt voor de snelle reactie!

latent bison Jan 2, 2024, 7:53 PM

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ik check even of ie zonder dat ik mn rootpasswords en politieke affiliatie deel in een github gist kan steken

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https://gist.github.com/tobiasoort/d5f0c3a4fe86e2964e59c7b8f8b477c6

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what are you going to make? 🙂 (laten we in 't engels doorgaan voor de deelbaarheid)

pseudo bison Jan 2, 2024, 8:33 PM

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I have a 3d printer with octoprint. I already have some nice things attached to it through a esp8266(automatic camera cover, filament runout sensor). I want to add a small display to it and some controllable LED strips. A e-ink display would be nice, so I can show some other stuff when the printer isn't running on it, without being annoying.

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(the printer is in my bedroom, so that's why I am using a automatic camera cover)

latent bison Jan 2, 2024, 9:22 PM

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check - then you probably dont need 99% of my yaml since most of it is to do extreme low power (basically: off) and still know which button was pressed to wake it up

#Very Low Power Litterbox Scooper Tracker