Here is what I am thinking on doing, this is still working in progress:
substitutions:
name: midea-thermostat
friendly_name: Thermostat
esphome:
name: ${name}
friendly_name: ${friendly_name}
name_add_mac_suffix: false
min_version: 2025.11.0
external_components:
- source: github://HomeOps/ESPHome-Midea-XYE@virtual_climate
components: [midea_xye, virtual_thermostat]
refresh: 0s
esp32:
board: m5stack-atom
framework:
type: arduino
logger:
level: VERY_VERBOSE
# Enable Home Assistant API
api:
# Allow Over-The-Air updates
ota:
- platform: esphome
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
uart:
rx_pin: GPIO22
tx_pin: GPIO19
baud_rate: 4800
data_bits: 8
stop_bits: 1
parity: NONE
debug:
direction: BOTH
dummy_receiver: false
after:
delimiter: [0x55]
sequence:
- lambda: UARTDebug::log_hex(direction, bytes, ' ');
sensor:
- platform: homeassistant
entity_id: sensor.whole_home_temperature
id: thermostat_follow_me
name: "Whole Home Temperature Sensor"
internal: true
filters:
- throttle: 10s
- heartbeat: 45s
- debounce: 1s
on_value:
midea_ac.follow_me:
temperature: !lambda "return x;"
- platform: wifi_signal
name: ${friendly_name} Wi-Fi Signal
update_interval: 60s
- platform: uptime
name: "Uptime"
id: uptime_sec
internal: true
- platform: template
name: ${friendly_name} Uptime Days
lambda: |-
return (id(uptime_sec).state/60)/60/24;
icon: mdi:clock-start
unit_of_measurement: days
update_interval: 60s
# ---------------------------------------------------------
# PRESET CONFIG VALUES (EDITABLE IN HOME ASSISTANT)
# ---------------------------------------------------------
number:
- platform: template
name: "Home Min Temp"
id: home_min
min_value: 16
max_value: 26
step: 1
initial_value: 21
optimistic: true
- platform: template
name: "Home Max Temp"
id: home_max
min_value: 17
max_value: 30
step: 1
initial_value: 23
optimistic: true
- platform: template
name: "Sleep Min Temp"
id: sleep_min
min_value: 16
max_value: 26
step: 1
initial_value: 19
optimistic: true
- platform: template
name: "Sleep Max Temp"
id: sleep_max
min_value: 17
max_value: 30
step: 1
initial_value: 21
optimistic: true
- platform: template
name: "Away Min Temp"
id: away_min
min_value: 16
max_value: 26
step: 1
initial_value: 16
optimistic: true
- platform: template
name: "Away Max Temp"
id: away_max
min_value: 17
max_value: 30
step: 1
initial_value: 25
optimistic: true
climate:
- platform: midea_xye
id: real_climate
#internal: true # Hide in HASS
name: "Hidden Midea Climate"
period: 1s
timeout: 200ms
beeper: false
use_fahrenheit: false
visual:
min_temperature: 17 °C
max_temperature: 30 °C
temperature_step: 1.0 °C
supported_modes:
- COOL
- HEAT
outdoor_temperature:
name: Outside Temp
temperature_2a:
name: Inside Coil Inlet Temp
temperature_3:
name: Outside Coil Temperature
timer_start:
name: Timer Start
timer_stop:
name: Timer Stop
error_flags:
name: Error Flags
protect_flags:
name: Protect Flags
- platform: virtual_thermostat
id: virtual_climate
name: ${friendly_name}
# REQUIRED INPUTS
room_sensor: thermostat_follow_me
real_climate: real_climate
# PRESET MAPPINGS (YAML → C++)
home_min: home_min
home_max: home_max
sleep_min: sleep_min
sleep_max: sleep_max
away_min: away_min
away_max: away_max
This implements a virtual climate device that provides auto mode and presets.
Basically moves the brain to the ESP device.
ChatGPT says is ok, to hookup to these two wires,but have never actually seen anyone saying they have gotten anything useful in regards to HA using the HA & HB terminals.
CRITICAL FINDING: ALL Commands Return IDENTICAL Responses!
The Smoking Gun
Correct response code (echoes the command byte)
All data is 0x00 or 0xFF
The CRC Must Be Different
The Unit IS Responding!
Why Would It Do This?
Next Test: Try SW1-1 = ON
