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A1-SLWF-03 LED Controller from SMLIGHT is the smallest and most powerful WLED + soundReactive WLED controller for addressable led strips like WS2812B. It can be controlled over WiFi or by IR remote or by sensor button.

Easy to use – just plug Type-C cable (support PD) and addressable led strip (like WS2812B) and start enjoying hundreds of effects.

Very small and tiny, the smallest WLED controller based on ESP32 SoC with built-in digital microphone.

It comes pre-flashed and ready-to-use out of the box. Built-in digital microphone * allows using sound-reactive effects. It can be controlled from the web interface (no app needed) or via the WLED app (available in Google Play and AppStore). 

Also can be controlled by IR remote controller (not included) or with a sensor button. Automatic integration with Home Assistant. 

Supports more than 150 effects, including soundReactive. All effects are adjustable. Supports 2D effects for WS23812B matrixes 16x16.



Key Features:

  • WLED + soundReactive WLED powered! Pre-flashed and ready to use. Just plug-and-play!
  • ESP32 powered with 16Mb memory.
  • Digital microphone ICS-43434 built-in – music effects with soundReactive WLED firmware.
  • IR receiver built-in.
  • Sensor button built-in.
  • Supported strips: WS2812B, WS2811, WS2813, WS2815, APA102, LPD8806, WS2801, SK9822.
  • Supported voltage: DC 5-24V.
  • DIY pinouts for custom developments.
  • Out-of-the box integration with Home Assistant.
  • 3 ways of powering: via Type-C, via DC 5.5x2.1 plug or via Screw terminal.
  • Pre-flashed and ready to use out of the box.
  • If you have more than 1 A1-SLWF-03 controller – you can sync many A1-SPWF-03 and control as a single unit.
  • Supports WLED app (Google Play and AppStore).
  • Interfaces supported: MQTT, Philips Hue, Websockets, HTTP API, Serial, UDP Realtime.
  • Max numbers of LEDs controlled: good performance 35 fps is 2000 LEDs (two outputs), Ok performance (25 fps) is 3000 LEDs for two outputs. With led strip 60 LED/m it is 33 – 50 meters of LED strip. With 30LED/m it is 65 – 100 meters of addressable LED strips for Good and Ok performance.
  • Autoboot for smooth flashing without programmers and buttons.
  • Can be used as a microphone for Voice Assistant at Home Assistant (requires re-flashing).
  • Can be used as BTProxy for Home Assistant (requires re-flashing).
  • Can be used as ESPHome device (requires re-flashing).


Parameters:

  • Product name: A1-SLWF-03 LED Controller.
  • WiFi: 2.4Ghz
  • Size: 30*57*23mm.
  • Operating Temperature: -15 - +45°C
  • Supported voltage: DC 5-24V
  • Waterpoof: IP20

 

Rich packing includes:

  • 1x A1-SLWF-03 LED Controller.
  • 2x 2-sided adhesive tape.
  • 2x screws.
  • 1x screwdriver.
  • 1x Type-C to micro-USB adapter.
  • 1x manual QR-code.

 

Warnings:

  • Do not connect A1-SLWF-03 Controller to your PC over USB if other sources of powering are connected (e.g. through a screw terminal or DC plug).
  • MICROPHONE WORK IF THE CONTROLLER IS CONNECTED TO YOUR HOME WIFI. IF THE CONTROLLER IN ACCESS POINT MODE – THE MICROPHONE DOES NOT WORK.
Reviews: 1
Shashi
20/12/2023
I ordered 2 of these from AliExpress. The device is awesome. Had a bit of trouble connecting to Wifi but eventually it connects. The only issue is I wanted to update to latest WLED 14 b3 which it did say it updated with the flasher https://smlight.tech/flasher/ but the device stopped responding weirdly. I was able to flash it back and get it working again. So this may mean you won't be able to get new updated features and effects. Also ticking Enable ArduinoOTA won't stick after reboot which means can't be update OTA. This is understandable due to custom SOC but should be updatable.
Most likely would have purchased more if it was updatable
Questions: 10
 Tom Trautman
26/02/2024
I have a controller that will not fully boot until I download logs. after that, it works fine. My intent is to have this run from a wall wart and not tethered to a pc. any ideas of what is causing this? I have reloaded the firmware from your download site and got the same issue.
The administration's response:
Please contact support https://smlight.tech/support/
I am sure we will solve your problem
 Vitalii
30/01/2024
I have updated WLED and lost sound reactive capabilities.
I can try to reconfigure it manually but I need to know the microphone pin number.
What pin is microphone on?
The administration's response:
Pins are written right on the cover of the device.
WS -> GPIO15
SC -> GPIO14
SD -> GPIO32
 Sash
21/12/2023
Mine came loaded with SR version but can't seem to update to version 14 b3. Used your tool to update which made it unresponsive. Reverted back to the old version and it came whack alive. I need to update to latest version to gain access to new effects etc.
The administration's response:
Use this tool to update https://smlight.tech/flasher/#SLWF-03
The firmware in it is preconfigured
 David
16/11/2023
There are three LEDs on the controller, where in the software can I control them?
The administration's response:
Hi,
One LED is connected to GPIO22, another to GPIO23 and the third to TTP223 (it lights up if the sensor button is "pressed")
 Piotr
07/11/2023
Is it possible for the controller to turn on the leds with the same settings even after a power loss and when there is no wifi?
The administration's response:
Ofc, just use presets https://www.youtube.com/watch?v=1vtKkAwVDP8
Have a look on this
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