IR AC Controller on ESPHome

An IR-based air conditioner controller with ESPHome and ESP32-C6

Note

A small weekend DIY project for my smart home.

Sheet

Component List

Component	Qty	Link
Seeed Studio XIAO ESP32C6	1	Getting Started
GY-BMP280-3.3 Pressure Sensor Module	1	Datasheet
NPN transistor 2N5551	1	Datasheet
3mm IR LED 940nm	3	Datasheet
Resistor 15ohm	1
Resistor 470ohm	1

ESPHome config

To program your device, add this code to your ESPHome YAML config file.

i2c:
  sda: GPIO22
  scl: GPIO23
  scan: True
  id: i2c_bus
  frequency: 1000Hz

sensor:
  - platform: bmp280_i2c
    temperature:
      id: "Temperature"
      name: "Temperature"
      oversampling: 2x
    pressure:
      name: "Pressure"
    address: 0x76
    update_interval: 600s

remote_transmitter:
  pin: GPIO20
  carrier_duty_percent: 50%

# For your AC, see the following link - https://esphome.io/components/climate/climate_ir/
climate:
  - platform: gree
    name: "AC"
    model: yan
    sensor: Temperature

Or

Add define ha_key, ota_password, wifi_ssid, wifi_password, ap_wifi_ssid, ap_wifi_password in your secret YAML. Then create the device using script.yaml.

wifi_ssid: "YOUR_SSID"
wifi_password: "YOUR_PASS"

ha_key: "YOUR_HA_KEY"
ota_password: "YOUR_OTA_PASS"

ap_wifi_ssid: "YOUR_AP_SSID"
ap_wifi_password: "YOUR_AP_PASS"

Tip

Config for your AC can be found in the - "IR Remote Climate" documentation.

Case

Download STL files from Makerworld or the STL folder. Source files are in the case folder.

The case is designed for 3 mm LEDs. If you have 5 mm LEDs, there is an IR LED diameter parameter(D_led) in the source files of the case. It is recommended to add 0.2–0.4 mm tolerance when printing the case.

The following parameters were used for 3D printing:

• Layer height - 0.2mm
• Default line width - 0.4mm
• Inner line width - 0.6mm
• Wall loops - 3
• Fuzzy skine type - Ridged
• Fuzzy skine thinckness - 0.1mm