Hw-597 Driver Page

A: Yes. The current CH340 drivers fully support 64-bit versions of Windows, macOS, and Linux.

Unlike simple LED modules, the HW-597's inputs are inverted. hw-597 driver

Why?
The module uses an NPN transistor (e.g., S8050) with a pull-up resistor. Driving the input pin LOW turns the transistor ON, activating the relay. A: Yes

| Symptom | Likely Cause | Solution | |---------|--------------|----------| | Relay always ON regardless of input pin | Input pin floating or not driven LOW | Set pin to OUTPUT, drive LOW to turn ON | | Relay never turns ON | Trying to drive HIGH to activate | Use active-low logic (LOW = ON) | | Relay chatters or doesn't latch | Insufficient supply current or voltage | Use separate 5V supply (do not power from MCU's 5V pin if using both relays simultaneously) | | Module works at 5V but not 3.3V | Transistor base threshold not met | Use a logic level shifter or 5V MCU | and Linux. Unlike simple LED modules