esphome-docs/cookbook/sonoff-dual-light-switch.rst

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DIY Light switch using a Sonoff Dual
====================================
.. seo::
:description: An example of how to integrate a dual light switch into Home Assistant using ESPHome
:image: sonoff_light_switch.png
:keywords: Relay, Sonoff Dual Dual R1, Light, HASS, Home Assistant, ESPHome
.. note::
This is a DIY solution, and you will need to have some knowledge of electrical wiring and enough
capabilities to do this work safely.
The author, and the ESPHome team, take no responsibility for any actions, injuries or outcomes
from following this guide.
In some countries you may need specific qualifications before you can carry out such work in
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a residential property.
Please read up on :doc:`/cookbook/sonoff-basic-light-switch` to get the background and principals of
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the this project. It's all basically the same, but with a double switch.
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So we will be using GPIO4 and GPIO14 for the two retractive switches, again they will both short to 0V
when the switch is clicked.
R1
--
The R1 version of the Dual controls the relays via the UART, so the code gets a bit complex here.
.. code-block:: yaml
esphome:
name: dual_ls
platform: ESP8266
board: esp01_1m
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
logger:
baud_rate: 0
# Enable Home Assistant API
api:
ota:
uart:
tx_pin: GPIO01
rx_pin: GPIO03
baud_rate: 19200
switch:
- platform: template
id: relay_1
turn_on_action:
if:
condition:
switch.is_off: relay_2
then:
- uart.write: [0xA0, 0x04, 0x01, 0xA1]
else:
- uart.write: [0xA0, 0x04, 0x03, 0xA1]
turn_off_action:
if:
condition:
switch.is_off: relay_2
then:
- uart.write: [0xA0, 0x04, 0x00, 0xA1]
else:
- uart.write: [0xA0, 0x04, 0x02, 0xA1]
optimistic: true
- platform: template
id: relay_2
turn_on_action:
if:
condition:
switch.is_off: relay_1
then:
- uart.write: [0xA0, 0x04, 0x02, 0xA1]
else:
- uart.write: [0xA0, 0x04, 0x03, 0xA1]
turn_off_action:
if:
condition:
switch.is_off: relay_1
then:
- uart.write: [0xA0, 0x04, 0x00, 0xA1]
else:
- uart.write: [0xA0, 0x04, 0x01, 0xA1]
optimistic: true
binary_sensor:
- platform: gpio
pin:
number: GPIO4
mode: INPUT_PULLUP
inverted: true
id: button_1
on_press:
then:
- light.toggle: light_1
- platform: gpio
pin:
number: GPIO14
mode: INPUT_PULLUP
inverted: true
id: button_2
on_press:
then:
- light.toggle: light_2
- platform: status
name: "Dual LS Status"
status_led:
pin:
number: GPIO13
inverted: yes
output:
- platform: template
type: binary
id: out_1
write_action:
if:
condition:
light.is_on: light_1
then:
- switch.turn_on: relay_1
else:
- switch.turn_off: relay_1
- platform: template
type: binary
id: out_2
write_action:
if:
condition:
light.is_on: light_2
then:
- switch.turn_on: relay_2
else:
- switch.turn_off: relay_2
light:
- platform: binary
name: "Dual L1"
id: light_1
output: out_1
- platform: binary
name: "Dual L2"
id: light_2
output: out_2
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In the above code block, there is a *secrets.yaml* file so that you have just one place to change WiFi
details for all your devices.
The logger baud_rate: 0 is required to make sure the logged does not send any data over the UART or it would
mess with the relays.
Although not visible day to day, there is also the status LED configured so that it can be used when setting
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up / debugging. Also a configured binary sensor to give status in case you want to perform an action / alert
if the light switch disconnects for any reason.
R2
--
This one is a lot simpler as it uses real GPIO for its relays. Please note this is untested, but should work!
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It's basically the same as the :doc:`T2 </cookbook/sonoff-t1-3>`
.. code-block:: yaml
esphome:
name: dual_ls
platform: ESP8266
board: esp01_1m
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
logger:
api:
ota:
binary_sensor:
- platform: gpio
pin:
number: GPIO0
mode: INPUT_PULLUP
inverted: true
id: button
on_press:
then:
- light.toggle: light_1
- platform: gpio
pin:
number: GPIO14
mode: INPUT_PULLUP
inverted: true
id: button
on_press:
then:
- light.toggle: light_2
- platform: status
name: "Dual LS Status"
output:
- platform: gpio
pin: GPIO12
id: relay_1
- platform: gpio
pin: GPIO5
id: relay_2
light:
- platform: binary
name: "Dual L1"
id: light_1
output: relay_1
- platform: binary
name: "Dual L2"
id: light_2
output: relay_2
status_led:
pin:
number: GPIO13
inverted: yes
See Also
--------
- :doc:`/cookbook/sonoff-light-switch`
- :doc:`/guides/automations`
- :doc:`/devices/sonoff_basic`