Pseudo-code Logic:
You are replacing the factory PCB with a microcontroller (like an ATtiny85 or ESP32 ).
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | Protocol/Code inversion | Reverse the bit array in your code or toggle "Mirror" in the software. | | Text is garbled | Baud rate / Timing | The fan is spinning at a speed the software doesn't expect. Try changing the animation speed. | | Computer doesn't see fan | Cable/Driver | It might be a "Power Only" fan. Check Device Manager. If not there, see Method 3. | | Text drifts (spins around) | Missing Sync | The Hall sensor isn't detecting the magnet, or the magnet fell off. Open the case and check the small magnet near the rotor. |
Pseudo-code Logic:
You are replacing the factory PCB with a microcontroller (like an ATtiny85 or ESP32 ).
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | Protocol/Code inversion | Reverse the bit array in your code or toggle "Mirror" in the software. | | Text is garbled | Baud rate / Timing | The fan is spinning at a speed the software doesn't expect. Try changing the animation speed. | | Computer doesn't see fan | Cable/Driver | It might be a "Power Only" fan. Check Device Manager. If not there, see Method 3. | | Text drifts (spins around) | Missing Sync | The Hall sensor isn't detecting the magnet, or the magnet fell off. Open the case and check the small magnet near the rotor. |
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