I just bought my daughter (10y) a ‘DIY home kit from Keyestudio’ to keep her occupied during summer holiday. She already had a lot of fun with building it, and thinking what she can do with it. My target was to let her play a bit with HA. But sadly, this was not so straight forward. I guess I maybe wiped somewhere the ESP board with my first HA connectivity. But I learned a lot around ESP32 with this kit, so it was positive at the end.
To be honest, I’m very surpised! For this price, you get a real nice package of different sensors (temperature, moisture, humidity, PIR, NFC, gas, buzzer, fan, servo, led, RGB led, display…).
For those who want my esphome yaml file:
esphome:
name: keyestudiosmarthouse
friendly_name: "DIY Huis"
esp32:
board: esp32dev
framework:
type: arduino
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "*************"
#Used for buzzer music
services:
- service: play_rtttl
variables:
song_str: string
then:
- rtttl.play:
rtttl: !lambda 'return song_str;'
ota:
- platform: esphome
password: "*************"
wifi:
ssid: *************
password: *************
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Keyestudiosmarthouse"
password: "*************"
captive_portal:
i2c:
- frequency: 800kHz
rc522_i2c:
#RF-Reader
address: 0x28
display:
# LCD Screen
- platform: lcd_pcf8574
update_interval: 10s
id: lcd_display
dimensions: 16x2
address: 0x27
lambda: |-
it.printf(0, 0, "Temp: %.1f C", id(temperature_dht).state);
it.printf(0, 1, "Vocht: %.1f %%", id(humidity_dht).state);
binary_sensor:
# Reports if this device is Connected or not
- platform: status
name: "Status"
# Left push button
- platform: gpio
pin:
number: 16
inverted: true
name: "Linkerknop"
# Right push button
- platform: gpio
name: "Rechterknop"
pin:
number: 27
inverted: true
# GAS Sensor
- platform: gpio
pin:
number: 23
inverted: true
name: "Gas sensor"
device_class: gas
# PIR Sensor
- platform: gpio
pin: 14
name: "Bewegingsmelder"
device_class: motion
# Blue NFC tag - keyholder
- platform: rc522
uid: **-**-**-**
name: "Blauwe Sleutel Tag"
# White NFC tag - credit card
- platform: rc522
uid: **-**-**-**
name: "Kredietkaart Tag"
light:
# Status LED
- platform: status_led
name: "LED"
pin: 12
# 6812RGB Led
- platform: neopixelbus
type: GRB
variant: SK6812
pin: 26
num_leds: 4
name: "RGB Leds"
effects:
- pulse:
- random:
- strobe:
- flicker:
- addressable_rainbow:
- addressable_color_wipe:
- addressable_scan:
- addressable_twinkle:
- addressable_random_twinkle:
- addressable_fireworks:
servo:
# Servo 90 Motor 1
- id: servo_01
output: servo_01_out
# Servo 90 Motor 2
- id: servo_02
output: servo_02_out
output:
# Roof FAN
- platform: ledc
pin: 18
frequency: 100 Hz
id: ventilation_fan_pwm_r
# Roof FAN
- platform: ledc
pin: 19
frequency: 100 Hz
id: ventilation_fan_pwm_l
# Servo 90 Motor 1
- platform: ledc
id: servo_01_out
pin: 5
frequency: 50 Hz
# Servo 90 Motor 2
- platform: ledc
id: servo_02_out
pin: 13
frequency: 50 Hz
# Buzzer config
- platform: ledc
id: rtttl_out
pin: 25
# Buzzer config
rtttl:
output: rtttl_out
on_finished_playback:
- logger.log: 'Song ended!'
number:
# Servo 90 Motor 1
- platform: template
name: "Venster"
min_value: 0
initial_value: 0
max_value: 100
step: 1
optimistic: true
set_action:
then:
- servo.write:
id: servo_01
level: !lambda 'return x / 100.0;'
# Servo 90 Motor 2
- platform: template
name: "Deur"
min_value: 0
initial_value: 0
max_value: 100
step: 1
optimistic: true
set_action:
then:
- servo.write:
id: servo_02
level: !lambda 'return x / 100.0;'
fan:
# Roof FAN L
- platform: speed
output: ventilation_fan_pwm_l
name: "Dak Ventilator L"
# Roof FAN R
- platform: speed
output: ventilation_fan_pwm_r
name: "Dak Ventilator R"
sensor:
# Reports the WiFi signal strength
- platform: wifi_signal
name: "WIFI Signaal"
update_interval: 60s
#Temperature and Humidity
- platform: dht
pin: 17
model: dht11
temperature:
name: "Temperatuur"
id: temperature_dht
humidity:
name: "Vochtigheid"
id: humidity_dht
update_interval: 30s
# Reports how long the device has been powered (in minutes)
- platform: uptime
name: "Opgestart"
filters:
- lambda: return x / 60.0;
unit_of_measurement: minutes
# Steam Sensor
- platform: adc
pin: 34
name: "Stoom Water sensor"
update_interval: 30s
switch:
# Helps to restart the device at distance
- platform: restart
name: "Herstart"
text_sensor:
# Reports the ESPHome Version with compile date
- platform: version
name: "ESPHome Versie"
# Reports WiFi name
- platform: wifi_info
ssid:
name: "WiFi"
# Reports current IP
- platform: wifi_info
ip_address:
name: "IP-Adres"
I’m maybe just missing the LCD Display to show values from HA. But I want to keep it as ‘base’ as possible, and I’m 100% sure that a lot of improvements will come.
Data in HA
Next step, a dashboard?
I feel I’m going to compete with my daughter for the nicest home. 
btw Maybe a nice ‘building’ kit for starters with HA? Build the hardware, and start with the software… And beside, it’s fun to have this kind of demo home on your desk to test things quickly.