Trying to use the new SSD1306 brightness feature, automating it from an ambient light sensor (so I don’t have to keep hiding the screen under a mug at night in order to sleep!).
Getting a compile error “TypeError: ‘>’ not supported between instances of ‘ESPLambda’ and ‘int’” when I use the code below:
display:
- platform: ssd1306_i2c
id: OLED
model: "SSD1306 128x64"
address: 0x3c
rotation: 180
brightness: !lambda return "id(${devicename}_ambientlight).state/10.0;"
For completeness, fixed by adding code below, with thanks to ssieb on the discord channel for their assistance:
- platform: bh1750
name: "${upper_devicename} Ambient Light"
id: ${devicename}_ambientlight
address: 0x23
update_interval: 5s
on_value:
then:
lambda: id(OLED).set_brightness(x / 100.0);
The integer divide will need tweaking for your hardware and light level.
Hi im trying to use the code but im getting TypeError: '>' not supported between instances of 'ESPLambda' and 'int' any sugestions
yaml file
esphome:
name: master_bedroom_sensor
platform: ESP32
board: nodemcu-32s
wifi:
ssid: "##"
password: "##"
power_save_mode: none
manual_ip:
# # Set this to the IP of the ESP
static_ip: ##
# # Set this to the IP address of the router. Often ends with .1
gateway: ##
# # The subnet of the network. 255.255.255.0 works for most home networks.
subnet: 255.255.255.0
dns1: 192.168.1.12
# Enable logging
logger:
level: debug
# Enable Home Assistant API
api:
password: "##"
ota:
password: "##"
esp32_ble_tracker:
text_sensor:
- platform: wifi_info
ip_address:
name: "Master Bedroom Sensor IP address"
ssid:
name: "Master Bedroom Sensor SSID"
- platform: version
name: "Master Bedroom Sensor ESPHome Version"
- platform: template
name: Master Bedroom Sensor Uptime
lambda: |-
int seconds = (id(uptime_sec).state);
int days = seconds / (24 * 3600);
seconds = seconds % (24 * 3600);
int hours = seconds / 3600;
seconds = seconds % 3600;
int minutes = seconds / 60;
seconds = seconds % 60;
return { (String(days) +"d " + String(hours) +"h " + String(minutes) +"m "+ String(seconds) +"s").c_str() };
icon: mdi:clock-start
update_interval: 113s
apds9960:
address: 0x39
update_interval: 30s
switch:
- platform: restart
name: "Master Bedroom Sensor Restart"
- platform: shutdown
name: "Master Bedroom Sensor Shutdown"
binary_sensor:
- platform: status
name: "Master Bedroom Sensor Status"
- platform: gpio
pin: 34
name: "Master Bedroom Motion"
device_class: motion
- platform: gpio
pin: 33
name: "Master Bedroom Sound level"
filters:
- delayed_off: 5s
- platform: ble_presence
mac_address: ##
name: "##"
- platform: ble_presence
mac_address: ##
name: "##"
- platform: ble_presence
mac_address: ##
name: "##"
- platform: apds9960
name: "Master Bedroom Sensor Up Movement"
direction: UP
- platform: apds9960
name: "Master Bedroom Sensor Down Movement"
direction: DOWN
- platform: apds9960
name: "Master Bedroom Sensor Left Movement"
direction: LEFT
- platform: apds9960
name: "Master Bedroom Sensor Right Movement"
direction: RIGHT
time:
- platform: homeassistant
id: homeassistant_time
sensor:
- platform: bme280
temperature:
name: "Master Bedroom Temperature"
oversampling: 16x
id: mb_temp
pressure:
name: "Master Bedroom Pressure"
id: mb_press
humidity:
name: "Master Bedroom Humidity"
id: mb_humid
address: 0x76
update_interval: 60s
- platform: wifi_signal
name: "Master Bedroom Sensor WiFi Signal"
update_interval: 60s
- platform: apds9960
name: "Master Bedroom Clear Channel"
type: CLEAR
- platform: apds9960
name: "Master Bedroom Red Channel"
type: RED
- platform: apds9960
name: "Master Bedroom Green Channel"
type: GREEN
- platform: apds9960
name: "Master Bedroom Blue Channel"
type: BLUE
- platform: apds9960
name: "Master Bedroom Proximity Channel"
type: PROXIMITY
- platform: uptime
id: uptime_sec
- platform: bh1750
name: "Master Bedroom Ambient Light"
id: light
address: 0x23
update_interval: 5s
on_value:
then:
lambda: id(OLED).set_brightness(x / 100.0);
display:
- platform: ssd1306_i2c
id: OLED
model: "SSD1306 128x64"
address: 0x3c
brightness: !lambda return "id(light).state/10.0;"
lambda: |-
// Print "Bedroom Sensor" in top center.
it.printf(64, 0, id(font1), TextAlign::TOP_CENTER, "Bedroom Sensor");
// Print Master Bedroom Temperature (from master_bedroom_sensor)
if (id(mb_temp).has_state()) {
it.printf(3, 60, id(font2), TextAlign::BASELINE_LEFT , "%.1f°", id(mb_temp).state);
}
// Print Master Bedroom Pressure (from master_bedroom_sensor)
if (id(mb_press).has_state()) {
it.printf(127, 23, id(font3), TextAlign::TOP_RIGHT , "%.1f°", id(mb_press).state);
}
// Print Master Bedroom Humidity (from master_bedroom_sensor)
if (id(mb_humid).has_state()) {
it.printf(127, 60, id(font3), TextAlign::BASELINE_RIGHT , "%.1f°", id(mb_humid).state);
}
font:
- file: 'slkscr.ttf'
id: font1
size: 8
- file: 'BebasNeue-Regular.ttf'
id: font2
size: 36
- file: 'arial.ttf'
id: font3
size: 14
i2c:
sda: 21
scl: 22
scan: True
Hi jonathanpearce,
Can you please post your full yaml, not working for me.
- platform: homeassistant
id: oled_brightness_control
entity_id: input_number.oled_brightness_control
internal: true
on_value:
then:
lambda:
id(my_display).set_brightness(x / 1.0);
display:
- platform: ssd1306_i2c
model: "SH1106 128x64"
address: 0x3C
rotation: 0
So, I’m having trouble getting this to work as well. It compiles fine and there are no errors in the logs, but it doesn’t actually do anything.
Specifying the brightness: attribute under display: does actually change the brightness, so I feel like the problem is in the lambda implementation? I am using the latest dev version of ESPHome.
I only ever got it to compile, thinking I was victorious. It doesn’t work with the hardware sadly, as you’ve also pointed out.
Alas I’ve not had time to get near it, having moved house and been rather busy taking the house apart and trying to put it back together again.
Hi, i got this to work!
you have to call setup() after altering the brightness to get the display to recognize the change. This makes the screen flicker once, but i guess its better than nothing…
sensor:
- platform: homeassistant
id: oled_brightness_control
entity_id: input_number.oled_brightness_control
internal: true
on_value:
then:
lambda: |-
id(my_display).set_brightness(x / 1.0);
id(my_display).setup();
display:
- platform: ssd1306_i2c
id: my_display
model: "SH1106 128x64"
address: 0x3C
A little update:
If you add the following if-condition to your display-lambda, the display will turn off when the brightness is 0 (instead if just turning the display brightness all the way down).
display:
- platform: ssd1306_i2c
id: my_display
model: "SH1106 128x64"
address: 0x3C
lambda: |-
if (id(oled_brightness_control).state > 0)
{
// your code
}
Thanks for this, I used your suggestion of .setup() to get mine working too. It’s really too bad that the .set_brightness() doesn’t apply by itself. I was hoping to use this functionality to gently fade the screen to black. Can’t really do that with a .setup() flicker…
Hi’ guys.
I had similar issue and found this thread. Solution works nicely - but not for long…
As ESP will rapidly run out of memory with the repeated setup calls which allocates new memory block from heap and ESP will end up crashing and rebooting 
Check my issue at ESPHome
Ciao !
Hi, I have been trying to make my OLED controllable via Home Assistant. Now i got that to work and i wanted to share my configuration in this topic.
First off: the configuration of the oled is just completely as you would want it to be. No different configuration there.
Then add thesse codelines to be able to control your display brightness
light:
- platform: monochromatic
name: "OLED Brightness%"
output: oled_bc
output:
- platform: template
id: oled_bc
type: float
write_action:
then:
- lambda: id(oled).set_brightness(state);
This should just do the trick. oled_bc just stands for oled_brightnesscontrol
latest update change:
then:
- lambda: id(oled).set_contrast(state);
Worth noting this is now fixed in esphome V15 and you no longer need to call setup, which stops it rebooting/resetting periodically.
Indeed it is fixed by kbx81
You can dynamically set brightness and turn on/off display now.
Using a SSD1309 display you will have to use the turn_on() / turn_off() display commands, as setting brightness at 0% won’t turn off display entirely.
CIao !
thank you very much m8! you saved the day!! 
Hi have you got an example for me please the my config is not working with the latest version of ESPhome
- platform: bh1750
id: oled_brightness_control
# entity_id: input_number.oled_brightness_control
internal: true
on_value:
then:
lambda: |-
id(OLED).set_brightness(x / 1.0);
id(OLED).setup();
display:
- platform: ssd1306_i2c
id: OLED
model: "SSD1306 128x64"
address: 0x3c
#brightness: 20%
lambda: |-
if (id(oled_brightness_control).state > 0)
// Print "Bedroom Sensor" in top center.
it.printf(64, 0, id(font1), TextAlign::TOP_CENTER, "Bedroom Sensor");
Brightness has become contrast in the latest release. Update your code to match and it should start working again, mine has.
Thanks for updating, I had no-idea (until getting to the bottom of this thread), of the change from set_brightness() → set_contrast(), this also fixed my code (with out the need for the setup() command).
Thanks Bjorn301 !!!
Finally, I can change the brightness on my SH1107 128*128 OLED display.
I share the part and hope to help someone…
display:
- platform: ssd1306_i2c
model: 'SH1107 128x128'
address: 0x3C
id: display_oled
number:
- platform: template
name: "Brightness Display"
id: "brightness_display"
unit_of_measurement: '%'
mode: slider
step: 1
min_value: 0
max_value: 100
optimistic: true
initial_value: 100
on_value:
then:
lambda: id(display_oled).set_contrast(x / 100.0);