Roller blind using hall effect pulse sensor

ESPHome
1

Hi folks - newbie here!

Ive taken an IKEA rollerblind and replaced the awful “spring back at any random time” mechanism out, replacing it with a 12v geared motor and a hall effect/magnet sensor that pulses every once for each revolution of the blind. What I think I want is a cover component, but Im not sure how to proceed. At the moment, this is what I use - it sets up some variables for the current position and length etc, then remembers where it is. I have four buttons on my lovelace, one to fully open, one to fully close, one to go up one turn, one to go down one turn.

Code:

esphome:
  name: office_blind
  platform: ESP8266
  board: d1_mini_lite

wifi:
  ssid: "verysecret"
  password: "evenmoresecret"

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:

globals:
  - id: counter
    type: int
    restore_value: no
    initial_value: '0'
    
  - id: direction
    type: int
    restore_value: no
    initial_value: '0'
  
  - id: length
    type: int
    restore_value: no
    initial_value: '14'
    

binary_sensor:
  - platform: gpio
    pin:
      number: D2
      mode: INPUT_PULLUP
      inverted: yes
    id: pulse_r1
    internal: true
    on_press:
      - delay: 0.2s
      - lambda: !lambda |-
          if(id(direction) == -1) {
            id(counter) -= 1;
            id(mtr_1).turn_off();
            id(mtr_2).turn_off();
            id(direction) = 0;
          }
          if(id(direction) == 1) {
            id(counter) += 1;
            id(mtr_1).turn_off();
            id(mtr_2).turn_off();
            id(direction) = 0;
          }
          if(id(direction) == -2) {
            id(counter) -= 1;
              if(id(counter) <= 0) {
                id(direction) = 0;
                id(mtr_1).turn_off();
                id(mtr_2).turn_off();
                ESP_LOGD("main", "Reached the top.");
              }
          }
          if(id(direction) == 2) {
            id(counter) += 1;
              if(id(counter) >= id(length)) {
                id(direction) = 0;
                id(mtr_1).turn_off();
                id(mtr_2).turn_off();
                ESP_LOGD("main", "Reached the bottom.");
              }
            }
            ESP_LOGD("main", "Counter = %d", id(counter));

switch:
  - platform: gpio
    pin:
      number: D3
    id: mtr_1
    interlock: [mtr_2]
    

  - platform: gpio
    pin: 
      number: D4
    id: mtr_2
    interlock: [mtr_1]
    

  - platform: template
    name: "Down"
    icon: "mdi:axis-z-rotate-clockwise"
    turn_on_action:
    - lambda: !lambda |-
        if(id(counter) < id(length)) {
          id(mtr_1).turn_on();
          id(direction) = 1;
          ESP_LOGD("main", "Rotating clockwise");
        }
      
  - platform: template
    name: "Up"
    icon: "mdi:axis-z-rotate-counterclockwise"
    turn_on_action:
    - lambda: !lambda |-
        if(id(counter) < 0) {
        id(counter) = 0;
        }
        id(mtr_2).turn_on();
        id(direction) = -1;
        ESP_LOGD("main", "Rotating anti-clockwise");

  - platform: template
    name: "Top"
    icon: "mdi:arrow-up-bold"
    turn_on_action:
    - lambda: !lambda |-
        if(id(counter) >= 0) {
          id(mtr_2).turn_on();
          id(direction) = -2;
          ESP_LOGD("main", "Moving to the top.");
        }
  
  - platform: template
    name: "Bottom"
    icon: "mdi:arrow-down-bold"
    turn_on_action:
    - lambda: !lambda |-
        if(id(counter) < id(length)) {
          id(mtr_1).turn_on();
          id(direction) = 2;
          ESP_LOGD("main", "Moving to the bottom.");
        }

###################

Can anyone start me off with a cover control?

2

Welcome to the HA forums. Impressive first post.

In future could you please post your config properly - see point 11 in this post How to help us help you - or How to ask a good question

esphome has a cover component https://esphome.io/#cover-components - I would look at the Cover Core and Template Cover pages.

There is also a template cover home assistant component. It really depends whether you want the implementation on the esp or in HA. https://www.home-assistant.io/components/cover.template/

3

Thank you, and sorry! Ive amended my post.

There isnt an option in the cover core and cover component that will do what I want.

Id like to be able to open and close the blind, and also have a slider that I can use to set a position.

4

Great, makes it so much easier to read.

The HA template cover has a “set position” command, which could be linked to a gui component.

5

Is there a reason you used to separate sensors instead of a rotary_encoder component? I’m using the latter for now, but it can’t seem to count down, only up. It doesn’t matter which direction the motor is running, the number is always increasing.

Did this problem also occur to you and is that why you chose this solution? Does anyone know how to fix this problem with the rotary_encoder component?

---- EDIT ----
Fixed, there was a wire not properly connecting to my esp, so I only got 1 hall sensor and so esphome couldn’t get the direction right :).