Here comes the DFPlayer Pro-a mini simple but powerful MP3 Player! This MP3 player module supports four controlling modes: Arduino, AT command, on-board buttons, and ADKEY. You can directly press the on-board button to play or switch music without using a controller. By using a USB cable, you can easily copy your favorite songs into this module to play them any where you want, or use it as a sound card for your PC or Raspberry Pi after connecting them together.
这是一款体积小巧的arduino兼容的臭氧传感器模组,可方便、准确地测量环境中臭氧气体的浓度。可广泛应用于便携式仪器仪表、空气质量监测设备、消毒柜、智能家居等设备场所。
The VL6180X is the latest product based on ST’s patented FlightSense™technology. This is a ground-breaking technology allowing absolute distance to be measured independent of target reflectance. Instead of estimating the distance by measuring the amount of light reflected back from the object (which is significantly influenced by color and surface), the VL6180X precisely measures the time the light takes to travel to the nearest object and reflect back to the sensor (Time-of-Flight).
CCS811空气质量传感器能够测量eCO2(equivalent CO2)和TVOC(Total Volatile Organic Compounds)浓度。可用于空气测量应用，例如：空气质量检测、空气净化器、新风系统等。 CCS811使用AMS独有的微热板技术，相比传统的气体传感器，功耗更低、预热时间更短、体积更小。内部集成ADC和MCU，可以对数据进行采集、计算，并且通过I2C返回数据。
Wanna buy a simple & practical voice recorder? This one is right for you! The voice recorder module supports 4 controlling modes Arduino, AT command, on-board buttons and ADKEY, and multi-segment voice recording. You can directly press the on-board buttons to record or play voice without using a controller. Moreover, the 16MB storage on the module can store up to 40 minutes recording voice and the recorded files can be copied to your computer via the type-C interface.
