84 lines
2.8 KiB
ReStructuredText
84 lines
2.8 KiB
ReStructuredText
H-bridge Fan
|
|
============
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up hbridge controlled fans (or motors).
|
|
:image: fan.svg
|
|
|
|
The ``hbridge`` fan platform allows you to use a compatible *h-bridge* (L298N, DRV8871, MX1508, BTS7960, L9110S, DRV8833, TB6612, etc.) to control a fan (or motor/solenoid).
|
|
|
|
.. figure:: images/L298N_module.jpg
|
|
:align: center
|
|
:target: `kuongshun`_
|
|
:width: 50.0%
|
|
|
|
L298N H-bridge module. Image by `kuongshun`_.
|
|
|
|
.. _kuongshun: https://kuongshun.com/products/l298n-stepper-motor-driver-board-red
|
|
|
|
.. figure:: images/fan-ui.png
|
|
:align: center
|
|
:width: 80.0%
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
output:
|
|
- platform: ...
|
|
id: motor_forward_pin
|
|
pin: GPIO5
|
|
- platform: ...
|
|
id: motor_reverse_pin
|
|
pin: GPIO4
|
|
|
|
fan:
|
|
- platform: hbridge
|
|
id: my_fan
|
|
name: "Living Room Fan"
|
|
pin_a: motor_forward_pin
|
|
pin_b: motor_reverse_pin
|
|
# enable_pin: motor_enable
|
|
decay_mode: slow # slow decay mode (braking) or fast decay (coasting).
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **pin_a** (**Required**, :ref:`config-id`): The id of the
|
|
:ref:`float output <output>` connected to Pin A (alternatively IN1, etc.) of the h-bridge.
|
|
- **pin_b** (**Required**, :ref:`config-id`): The id of the
|
|
:ref:`float output <output>` connected to Pin B (alternatively IN2, etc.) of the h-bridge.
|
|
- **enable_pin** (*Optional*, :ref:`config-id`): The id of the
|
|
:ref:`float output <output>` connected to the Enable pin of the h-bridge (if h-bridge uses enable).
|
|
- **decay_mode** (*Optional*, string): The decay mode you want to use with
|
|
the h-bridge. Either ``slow`` (braking) or ``fast`` (coasting). Defaults to ``slow``.
|
|
- **speed_count** (*Optional*, int): Set the number of supported discrete speed levels. The value is used
|
|
to calculate the percentages for each speed. E.g. ``2`` means that you have 50% and 100% while ``100``
|
|
will allow 1% increments in the output. Defaults to ``100``.
|
|
- **name** (**Required**, string): The name for this fan.
|
|
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
|
|
- All other options from :ref:`Fan Component <config-fan>`.
|
|
|
|
.. _fan-hbridge_brake_action:
|
|
|
|
``fan.hbridge.brake`` Action
|
|
----------------------------
|
|
|
|
Set all h-bridge pins high, shorting the fan/motor's windings and forcing the motor to actively stop.
|
|
|
|
.. code-block:: yaml
|
|
|
|
on_...:
|
|
then:
|
|
- fan.hbridge.brake: my_fan
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`/components/output/index`
|
|
- :doc:`/components/fan/index`
|
|
- :doc:`/components/output/ledc`
|
|
- :doc:`/components/output/esp8266_pwm`
|
|
- :apiref:`fan/fan_state.h`
|
|
- `Adafruit's excellent H-bridge tutorial <https://learn.adafruit.com/improve-brushed-dc-motor-performance>`__
|
|
- :ghedit:`Edit`
|