[Hangshun Training Camp] MOLUN Smart Home Multifunctional Development Board

• HK32F030MF4P6

The onboard Hangshun HK32F030MF4P6 MCU has enough pins and is cheap! The pin header leads to all pins, and the simulation interface is led out separately to facilitate debugging. There is an NRST button, KEY2 is a reserved function key, and there is an onboard RGB light. RLY1 and RLY2 are two-way 5V relay modules. In addition, a passive buzzer, photoresistor, and DHT11 temperature and humidity sensor are connected. Onboard digital tube and 0.96' OLED interface are used to display data such as temperature and humidity. Onboard DS3231MZ+ clock circuit. Lead out a WS2812B control to drive a 60-bead WS2812B lamp panel to make a cool clock.

• ESP-12F

The minimum system configuration of the onboard ESP8266 has RST and BOOT buttons, and KEY1 is connected to GPIO2 as a reserved function key. Modules such as ESP-07S, ESP-12F/12E can be used. Pin headers lead out all interfaces

Tuya WB3S can replace ESP-12F, just pay attention to the pull-up and pull-down resistors. Tuya WB3S's default lantern firmware can directly drive the onboard RGB lights.

• serial port

The serial port chip uses CH330N/CH340N, which is used for programming ESP-12F modules and MCU programs, and is switched through pin headers.

• The minor problem encountered so far is that the reserved DHT11 data interface is connected to the GPIO16 of the ESP-12F through a jumper cap. During actual operation, it was found that the data cannot be read when the GPIO16 is connected. Dupont lines can be used to jump to other IO ports.