1. The BLDC drive part is composed of 3 IR2104 gate drivers and 6 NMOS. The control logic is compatible with the official Simple FOC L6234PD solution; 2. Main control model: ESP32-WROOM-32E, 4MB Flash dual-core MCU Wi-Fi & Bluetooth module; 3. Onboard 2 INA240A2 high-precision current sensors are used to measure A B phase current, A The inline sampling resistance value of phase B is 10mR (made from two 20mR resistors in parallel); 4. Support magnetic sensor encoders such as AS5600 and AS5047P; 5. Reserve ESP32 firmware burning port for secondary development; Onboard reset button and power indicator; Power supply voltage DC12-28V Maximum output current: 20A Interface description: 1. VCC, GND: DC12-28V power supply; 2. ESP32-WROOM-32E: 4MB FLASH dual-core MCU WI-FI & Bluetooth module; 3. ESP32 RST reset key; 4. IR2104 half-bridge grid drive: SD# Enable end: The high level is valid. SD# for high HO and LO output controlled by IN; HO and LO output cutoff when SD# is low IN control terminal: when SD# is enabled, when IN is high, HO output is high and LO output is low; When IN is low, HO output is low and LO output is high 5. 30V/30A N-channel MOS tube: It is recommended to use within 28V/20A (because A B phase,the maximum current sampling resistance can only exceed 20A current); 6. INA240A2 high precision current sampling amplifier: used to measure the INLINE current of phase A and B; 7. A and B phase current sampling resistance: the resistance value is 10MR(from 2 20MR resistors in parallel, The sampling resistance is the same as that of SIMPLE FOC V2.0.4), and the maximum current per phase is 20A; 8. A B C: brushless motor interface; 9. IO extension port: magnetic encoder that can be used to connect 2C and SPI interface. (such as AS5600 and AS5047P). Color: