Skip to main content

Frequently Asked Questions (FAQ)

Q1: What is the difference between SLWF-09 and SLWF-03?

A: The SLWF-09 is modular — you can add or remove Ethernet, PoE, and Microphone modules. The SLWF-03 has these features built in and is not designed for add-on modules.


Q2: Can I use the SLWF-09 without any add-on modules?

A: Yes. The controller works fully via Wi-Fi without any add-ons. Modules are optional and can be installed later.


Q3: Which LED strips are supported?

A: Most 3-wire (Data, V+, GND) and 4-wire (Data, Clock, V+, GND) addressable LEDs including WS2812B, SK6812, APA102, and similar. Supply voltage can be 5 V, 12 V, or 24 V.


Q4: How many LEDs can I connect?

A: It depends on the LED voltage, power supply capacity, and cooling. The SLWF-09 is rated for up to 10 A total LED current with proper heat dissipation.


Q5: How do I power the device?

A: You can use:

  • USB-C (5 V only, suitable for testing or small LED loads)

  • VIN terminal (5 V–24 V)

  • PoE module with IEEE 802.3af PoE switch/injector


Q6: How do I update the firmware?

A:

  • OTA: via WLED web interface → Config → Security & Updates

  • Web-based flasher: smlight.tech/flasher/#SLWF-09

  • USB-C: using esptool.py or similar


Q7: The Ethernet connection is not working, what should I check?

A:

  • Ensure the Ethernet module is fully seated in its connector.

  • Verify the cable and router/switch port are working.

  • Check that your router’s DHCP is enabled.


Q8: Does the PoE module support passive PoE?

A: No, only IEEE 802.3af active PoE is supported.


Q9: How do I enable sound-reactive effects?

A: Install the Microphone add-on, then enable “Sound Reactive” mode in WLED settings.


Q10: Can I use SLWF-09 with ESPHome?

A: Yes, you can flash ESPHome firmware using the web flasher or USB-C. Make sure to configure GPIO mapping according to the “GPIO Allocation” chapter.


Q11: Can I run the SLWF-09 in both Wi-Fi and Ethernet modes at the same time?

A: Yes, the ESP32 can maintain Wi-Fi and Ethernet simultaneously. However, WLED will usually prioritize Ethernet for control traffic.


Q12: How do I reset the device to factory defaults?

A: Hold the BOOT/Flash button for 5+ seconds until the status LED blinks rapidly. The SLWF-09 will reboot into AP mode.