EasyLoader (beta)

Current Product Don't Have Test Firmware

Note: pls, use PC chrome/edge browser, if can't connect, refresh the webpage.

1. Click connect button

2. After connected successfully, pick a firmware

3. Click the burn button

4. After burning successfully, Unplug the device and restart.





ATOM SPK is an audio player that adapts to the ATOM master control, with built-in I2S digital audio interface power amplifier chip NS4168, with automatic sampling rate detection, adaptive functions, and can effectively prevent audio signal distortion. Integrated TFCard card slot is convenient for saving and reading audio files. Provide 3.5mm headphone jack and external speaker interface, users can play audio through external headphones or speakers.

ATOM SPK Some IO conflict with ATOM Matrix's built-in hardware, so ATOM SPK is only applicable to ATOM LITE

Product Features

  • Power amplifier chip NS4168
  • I2S serial digital audio input interface
  • Support a wide range of sampling rates: 8kHz~96kHz
  • Automatic sampling rate detection, adaptive function
  • TFCard slot
  • Headphone jack
  • Speaker interface


  • 1x ATOM Lite
  • 1x ATOM SPK
  • 1x 1W Speaker
  • 1x M2 HEX KEY
  • 1x M2*8 cup head machine screw
  • 1x TYPE-C USB Cable(20cm)


  • Audio player
  • Bluetooth audio
  • Wi-Fi speaker


Specifications Parameters
Power amplifier chip NS4168
Amplifier output power 1W(VDD=3.3V)
Headphone jack 3.5mm
Speaker interface 1.25mm-2P
Speaker power 1W
Net weight 18.6g
Gross weight 37g
Product size 24*48*18mm
Package size 54*54*20mm


EasyLoader is a simple and fast program burner, which has a built-in product-related case program, which can be burned to the main control through simple steps to perform a series of functional verification.

Download Windows Version Easyloader

Press the middle button of ATOM to play a short audio.

Pin mapping

  • TFCard
  • NS4168


NS4168 is a mono audio power amplifier(the right channel is used by default in the ATOM SPK hardware design)


Use ATOM SPK to play RawPCM files or MP3, the case is suitable for master: ATOM Lite.

AtomSPK.h - API

//Init I2S  param(__rate: I2S sampling rate)
bool begin(int __rate = 44100);

//Play RawPCM param(___audioPtr: audio data pointer, __size: data length, freeFlag: whether to release the memory, __ticksToWait: allow the maximum duration of blocked playback)
size_t playRAW( const uint8_t* __audioPtr, size_t __size, bool __modal = false, bool freeFlag = true,TickType_t __ticksToWait = portMAX_DELAY );

//play Beep param(__freq: frequency, __timems: play market, __maxval: maximum volume, __modal: asynchronous or not)
size_t playBeep( int __freq = 2000, int __timems = 200, int __maxval = 10000, bool __modal = false );