: Ensure all grounds (MCU, HW-044, and the RS232 device) are tied together. Loose or missing grounds are the #1 cause of "gibberish" or inaccurate hex values in the serial monitor. Voltage Matching : If using an ESP32 or Raspberry Pi, power the module with . If using an Arduino Uno, power it with
The mechanical coupling allows simultaneous two-axis control with one finger, and the return-to-center springs provide a natural neutral position—ideal for velocity control (e.g., tank steering) or position control (e.g., robotic arm). hw-044 datasheet
| Feature | HW-044 | TXS0108E | Simple voltage divider | |---------|--------|----------|------------------------| | Bidirectional | Yes | Yes | No (one-way only) | | Number of channels | 8 | 8 | N/A | | Automatic direction | Yes | Yes | No | | Max speed (safe) | ~200 kHz | ~1 MHz | Depends on resistors | | External pull-ups needed | No | No | Yes | | Cost | Low (~$1-2) | Medium (~$3-5) | Very low | : Ensure all grounds (MCU, HW-044, and the
: Ensure all grounds (MCU, HW-044, and the RS232 device) are tied together. Loose or missing grounds are the #1 cause of "gibberish" or inaccurate hex values in the serial monitor. Voltage Matching : If using an ESP32 or Raspberry Pi, power the module with . If using an Arduino Uno, power it with
The mechanical coupling allows simultaneous two-axis control with one finger, and the return-to-center springs provide a natural neutral position—ideal for velocity control (e.g., tank steering) or position control (e.g., robotic arm).
| Feature | HW-044 | TXS0108E | Simple voltage divider | |---------|--------|----------|------------------------| | Bidirectional | Yes | Yes | No (one-way only) | | Number of channels | 8 | 8 | N/A | | Automatic direction | Yes | Yes | No | | Max speed (safe) | ~200 kHz | ~1 MHz | Depends on resistors | | External pull-ups needed | No | No | Yes | | Cost | Low (~$1-2) | Medium (~$3-5) | Very low |