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BlitzWolf BH-AP2501

BlitzWolf BH-AP2501

Device Type: misc
Electrical Standard: eu
Board: esp8266
Difficulty: Chip needs replacement, 5/5

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General Notes

These devices run a Tuya WBR3 MCU which needs to be replaced: preferably by an ESP12F.

GPIO Pinout

PinFunction
GPIO1UART TX
GPIO3UART RX
EN10k pull-up
RES10k pull-up
GPIO1510k pull-down

Configuration

substitutions:
device_name: "air-purifier"
device_friendly_name: "Air Purifier"
device_description: "Clean air good."
time_timezone: "Europe/Amsterdam"
esphome:
name: $device_name
friendly_name: $device_friendly_name
comment: $device_description
name_add_mac_suffix: false
esp8266:
board: esp12e
# Enable status LED
status_led:
pin:
number: GPIO2
inverted: true
# Enable logging
logger:
level: INFO
# Disable logging via UART, we need it for the Tuya MCU
baud_rate: 0
# Enable Home Assistant API
api:
encryption:
key: !secret home_assistant_key
ota:
password: !secret ota_password
# Configure WiFi
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
ap:
captive_portal:
# Initialize the UART that connects to the Tuya MCU
uart:
rx_pin: GPIO3
tx_pin: GPIO1
baud_rate: 9600
# Register the Tuya MCU connection
tuya:
# Fan control
output:
- platform: template
id: fan_output
type: float
# Off = 0
# Low = 0.33333
# Medium = 0.66666
# High = 1
write_action:
- logger.log:
level: INFO
format: "Fan output: %f"
args: ["state"]
- if:
condition:
lambda: return (state == 0);
then:
- fan.turn_off:
id: tuya_fan
else:
- if:
condition:
lambda: return (state < .4);
then:
# Fan = Low
- fan.turn_on:
id: tuya_fan
speed: 4
else:
- if:
condition:
lambda: return (state < .8);
then:
# Fan = Mid
- fan.turn_on:
id: tuya_fan
speed: 3
else:
# Fan = High
- fan.turn_on:
id: tuya_fan
speed: 2
fan:
- platform: speed
output: fan_output
id: speed_fan
name: "Fan"
speed_count: 3
- platform: "tuya"
name: "Fan"
id: "tuya_fan"
internal: True
switch_datapoint: 1
speed_datapoint: 3
speed_count: 4 # 1=Auto, 2=High, 3=Medium, 4=Sleep
sensor:
# PM2.5 sensor
- platform: "tuya"
name: "PM2.5"
sensor_datapoint: 2
device_class: "aqi"
state_class: "measurement"
accuracy_decimals: 0
# Filter utilization
- platform: "tuya"
name: "Filter remaining"
sensor_datapoint: 5
unit_of_measurement: "%"
icon: mdi:ticket-percent-outline
entity_category: diagnostic
# Countdown remaining
- platform: "tuya"
name: "Countdown Remaining"
sensor_datapoint: 19
icon: mdi:fan-clock
unit_of_measurement: "minutes"
# Air quality
- platform: "tuya"
name: "Air Quality"
sensor_datapoint: 21
icon: mdi:air-filter
number:
# Set countdown timer
- platform: "tuya"
name: "Countdown"
number_datapoint: 18
unit_of_measurement: hours
mode: box
icon: "mdi:fan-clock"
min_value: 0
max_value: 24
step: 1
switch:
# Ionizer
- platform: "tuya"
name: "Ionizer"
switch_datapoint: 6
icon: mdi:chart-bubble
# UV sterilization
- platform: "tuya"
name: "UV sterilization"
switch_datapoint: 9
icon: mdi:sun-wireless
# Filter reset
- platform: "tuya"
id: "filter_reset"
switch_datapoint: 11
internal: True
# Button to reset filter cartridge
button:
- platform: template
name: "Filter cartridge reset"
entity_category: diagnostic
icon: mdi:air-filter
on_press:
then:
- fan.turn_on: tuya_fan
- switch.turn_on: filter_reset
- delay: 1s
- switch.turn_off: filter_reset
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