Floor fan that can connect to Home Assistant

Video Link:
Bilibili Video -- Function Demonstration and Introduction
**Warning!:** Fan modification may involve 220V AC power. Please consider the risks carefully! Operate with caution! All operations must be performed after power is off! **
Project Introduction:
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This floor fan modification solution connects to the ESP32 system of Home Assistant. It integrates a 1.33-inch 240x240 display, temperature and humidity sensor, INA226 power acquisition, and automatically discovers and connects to Home Assistant via MQTT to achieve functions such as fan speed control, oscillation control, natural wind mode, fan speed memory, real-time acquisition of current temperature and humidity, current fan power, and automatic update of Beijing time. This design uses the ESP32WROOM32U or 32E, 4M ROM version, to adapt to different antenna schemes;
it uses a Jinyichen 1.33-inch 240x240 resolution LCD display, but other displays with the same pin SPI protocol can also be used; the screen can display WiFi signal strength, current time, Home Assistant connection status, memory wind speed, current wind speed, timer, temperature and humidity, blowing mode, oscillation mode, power supply voltage, current, power, etc.; it selects the DHT11 fully digital single-bus temperature and humidity sensor, which has a wide temperature measurement range and can meet general needs; higher precision sensors such as the I2C protocol SHT20 can also be selected, and the bus protocol can be selected via jumper; the sensor power supply can be drawn from the 5V power supply of the motor. The EC11 controller supports rotation, short press, long press, and double-click actions for power on/off, fan speed adjustment, oscillation, and natural wind control. It uses an INA226 power acquisition chip to collect power consumption data, and a jumper can be used to select whether to display system power consumption or brushless motor power consumption. For hardware, a 24V brushless motor with built-in driver and PWM speed control is required. A brake is optional, but this solution does not utilize it. Most brushless motors support forward and reverse rotation, but reverse rotation is useless for household fans, so this solution does not use it (I really can't think of any use for a fan in reverse, for takeoff?). I personally used a Nidec 48704R130 motor, which is quite suitable for modification in terms of size, power, and speed. The only drawback is its short motor shaft, requiring modification of the original fan's plastic parts. Accessories are also relatively easy to select. Of course, other suitable brushless motors can also be chosen. The PWM frequency can be changed in the code to adapt to different driver boards. For the power supply, a 24V AC-DC power module is required. The module size should be selected based on the motor's power, generally not less than 3A of rated output current (3A current under 24V power supply is already 72W, which is a very powerful airflow for a brushless motor with 16-inch blades). The module size also needs to be considered to ensure it fits in your fan housing. This solution uses an independent oscillating motor, which can be powered by 5V or 24V. A oscillating arm speed of 3-10 r/min is generally suitable. $color{blue}{Hardware Specifications}$ (For reference only) Brushless motor: Nidec 48704R130 motor Oscillating motor: 5V or 24V, must have a fixing hole in the middle of the shaft. Motor bracket Power module $color{blue}{Precautions}$ The specific hardware selection needs to be determined based on the appearance design of the fan to be modified and the available space. Alternatively, you can simply and directly externalize each module (provided safety is ensured). The temperature and humidity sensor can be externally mounted behind the fan motor, taking GND and 5V power from the brushless motor and connecting to the ESP32 via the SCL and DATA/SDA communication lines reserved on the motor cable. A ready-made 7-pin PA/PAE cable can be purchased; note that the wire diameter should not be too thin, at least 24awg, or it can be made yourself. The motherboard has a reserved UART programming interface, I2C and single-bus jumpers for the temperature and humidity sensor, and an INA226 power acquisition jumper, allowing selection of overall power consumption or individual motor power consumption; two GPIOs are also reserved for other uses. The implemented functionality is simple, so a WiFi selection interface is not provided on the display; you must manually set the WiFi name and password in the code. Similarly, you need to change your own HomeAssistant address and MQTT user password in the code. The BOM exported from LCSC EDA should be used as the standard; the BOM automatically generated by the system may not be accurate. Please go to Bilibili to watch the assembly process. Bilibili video -- Function demonstration and introduction. Since the appearance and design of fans from different brands are different, it is impossible to provide a specific modification and assembly plan. You can refer to the ideas in my video to modify and assemble it yourself.