I have two lamps I’m looking to make ‘smart’, whilst retaining their existing features. They are touch lamps, and - each time they are touched - they cycle through different brightnesses (e.g. 25%, 50%, 75%, 100% and then back to 0%).
I want to recreate exactly this behaviour, whilst also incorporating them into my smart home. I’m close! But not quite there.
I’m using:
- ESP32-S3 mini ESP32-S3 Mini Development Board with Pre-soldered Header, Based on ESP32-S3FH4R2 Dual-Core Processor, 240MHz Running Frequency, Support 2.4GHz Wi-Fi (802.11 b/g/n) & Bluetooth 5 : Amazon.co.uk: Computers & Accessories
- RobotDyn AC Dimmer AC Dimmer Module, 1 Channel, 3.3V/5V logic, AC 50/60hz, 110V~400V - Robotdyn
I’ve borrowed bits of YAML from here: Howto make a smart touch lamp with esp32s3 and a relay
Through the web interface or HA, I have control over the dimmer/power, and this bit works perfectly. It’s also detecting when I touch the touch pin. This is amazing, as I don’t really know what I’m doing, I’ve had a lot of help from ChatGPT to get to this point.
Problem (TL;DR):
Touching the pin only serves to turn off the lamp, which is not what I want. I want it to cycle through five brightness percentages (0, 25, 50, 75, 100) and back to zero if it’s at 100.
One other requirement: If the brightness has been set to something other than a multiple of 25 via the web interface or HA, I want the next touch to set the brightness to the next number in the sequence (i.e. if it’s currently at 10%, I don’t want to add 25 and end up at 35, I want it to go to 25. Likewise if it’s at 26, I want the next touch to take it to 50, not 51).
Here’s my YAML:
esphome:
name: "smart-touch-1"
friendly_name: Smart Touch Lamp 1
esp32:
board: esp32-s3-devkitc-1
framework:
type: arduino
# Enable logging
logger:
level: info
# level: debug
# Enable Home Assistant API
api:
encryption:
key: !secret api_key
ota:
- platform: esphome
password: !secret ota_password
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "FR-Lamp-Touch"
password: !secret wifi_password
# Enable Web server.
web_server:
port: 80
captive_portal:
sensor:
# hack so the touch sensor doesn't kick off at power on
- platform: uptime
name: Uptime Sensor
id: time_since_boot
update_interval: 3s
internal: True
- platform: template
id: current_brightness_variable
name: "Current Brightness"
unit_of_measurement: "%"
accuracy_decimals: 0
state_class: "measurement"
text_sensor:
- platform: template
name: "smart touch lamp"
id: smart_touch_lamp
icon: "mdi:toggle-switch"
on_value:
then:
- if:
condition:
text_sensor.state:
id: smart_touch_lamp
state: ""
else:
- delay: 200ms
- text_sensor.template.publish:
id: smart_touch_lamp
state: !lambda 'return "";'
esp32_touch:
setup_mode: false
measurement_duration: 0.25ms
binary_sensor:
- platform: esp32_touch
name: "Touch Pad Pin 13"
pin: GPIO13
threshold: 550000
filters:
# Small filter, to debounce the spurious events.
- delayed_on: 10ms
- delayed_off: 10ms
#on_press:
on_click:
- min_length: 10ms
max_length: 500ms
# Short touch to cycle through brightnesses
then:
- lambda: |-
int current_brightness = id(dimmer).current_values.get_brightness() * 100;
current_brightness += 25;
if (current_brightness > 100) {
current_brightness = 0;
}
// Store the brightness value for later use
id(current_brightness_variable).publish_state(current_brightness);
- light.turn_on:
id: dimmer
brightness: !lambda 'return id(current_brightness_variable).state / 100.0;'
- logger.log:
level: info
format: "Touch turn switch on"
# - if:
# # test to ignore random event on boot and when touch is disabled
# condition:
# - lambda: 'return (id(time_since_boot).raw_state > 1 && (!(id(touch_disabled).state)));'
# then:
# if:
# condition:
# # if light is off
# - switch.is_off: power_switch
# then:
# # then we turn it on
# - switch.turn_on: power_switch
# - logger.log:
# level: info
# format: "Touch turn switch on"
# else:
# # else it's on so we turn it off
# - switch.turn_off: power_switch
# - logger.log:
# level: info
# format: "Touch turn switch off"
- min_length: 500ms
max_length: 2000ms
then:
- logger.log: "${devicename} long click"
- if:
# test to ignore random event on boot and when touch is disabled
condition:
- lambda: 'return (id(time_since_boot).raw_state > 1 && (!(id(touch_disabled).state)));'
then:
text_sensor.template.publish:
id: smart_touch_lamp
state: !lambda 'return "long_press";'
# restart-button
button:
- platform: restart
name: "restart-esp32-dim-touch"
# AC Dimmer Configuration
light:
- platform: monochromatic
id: dimmer
name: "Smart Lamp"
output: ac_dimmer_output
restore_mode: ALWAYS_ON
on_turn_on:
- light.turn_on:
id: dimmer
brightness: 1.0 # Set initial brightness to 100% on power up
output:
- platform: ac_dimmer
id: ac_dimmer_output
gate_pin: GPIO12 # Gate pin for controlling the dimmer (GPIO12)
zero_cross_pin:
number: GPIO5 # Zero-cross pin for synchronization (GPIO5)
mode:
input: True
inverted: yes
switch:
# - platform: gpio
# name: power_switch
# id: power_switch
# restore_mode: RESTORE_DEFAULT_OFF
# pin: GPIO7
- platform: template
name: "touch disabled"
id: touch_disabled
restore_mode: ALWAYS_OFF
optimistic: true
I’m an ESPHome newbie, so please ELI5 if you’re able to kindly advise.
