ESPHOME ESP32 issue with motor controller

ESPHome
1

Hello all! after hand writing and going back and with chatgpt it appears I can’t win this battle ;(. I need the ability to change the motor speed on the fly using a slider or input value. This is being used to control a l298n motor controller that’s controlling a 12v peristaltic speed. From what I’ve read Automation: used to be a valid thing but has since been removed? or possibly I’m just not familiar enough with the history of esphome.

output:
  - platform: ledc
    pin: GPIO4
    id: motor_1_pwm

  - platform: gpio
    pin: GPIO5
    id: motor_1_a

  - platform: gpio
    pin: GPIO14   
    id: motor_1_b

  - platform: automation
    id: set_motor_speed
    alias: "Set Motor Speed"
    trigger:
    platform: state
    entity_id: input_number.motor_speed
  action:
    - output.set_level:
        id: motor_1_pwm
        level: "{{ (states('input_number.motor_speed') | int) * 2.55 }}"
    - gpio.output:
        id: motor_1_a
        level: LOW
    - gpio.output:
        id: motor_1_b
        level: HIGH
2

Hi and welcome…

We are happy to assist here but first you need to edit your post so you yaml is enclosed in preformatted text tags. They are accessed using the </> button on the posting toolbar.

Also have a read of item 11 in the following:

1 Like
3

Thank you! My apologies for the improper upload format. I was just reading the sticky post about that.

4

So far so good, and you are correct - platform: automation is invalid.

I assume your input_number is defined in HA? You will need to import that as a platform: homeassistant sensor first.

You can also define numbers and selects directly on the ESPHome device - whatever suits your needs.

5

In case you are still struggling, something like this:

sensor:
  - platform: homeassistant
    entity_id: input_number.motor_speed
    id: motor_speed
    on_value:
      - output.set_level:
          id: motor_1_pwm
          level: !lambda "return x * 2.55"
      - output.turn_off: motor_1_a
      - output.turn_on: motor_1_b
6

Thank you, I’ll give it a try. It appears an esp8266 board is more well laid out for what I’m attempting to configure. I’ve ordered some arriving saturday. They natively allow PWM control and a perfect example is available. I got the entire unit to work with Arduino code. I’m still attempting on the esp32 as curiosity and hype fixation have set in. :rofl:

7

Ummm so does the ESP32 and it’s done in hardware - not software. From. the Espressiff ESP8266 reference:

The ESP doesn’t have hardware PWM, so the implementation is by software.