Here is a standard wiring diagram and code example to get your HW-044 running with an Arduino Uno.
) and the battery cells as short and thick as possible to minimize voltage drops that can prematurely trigger the CV phase. hw-044 datasheet
When reading the hw-044 datasheet , you must respect the operating limits of the MAX98357 chip. Exceeding these values can destroy the module. Here is a standard wiring diagram and code
By counting the pulses, you can track exactly how many "steps" the knob has turned. hw-044 datasheet
: The TXD and RXD connections are frequently confused. Double-check your wiring. The HW-044's TXD pin is an output , so it must connect to your microcontroller's input (RX) pin.
// Initialize the software serial port for communication with the HW-044 mySerial.begin(9600);