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This is a DIY sound module: an MP3 playback and voice recording board with a small speaker and a PIR motion sensor. It plays a clip whenever the sensor detects a person, and you load audio over USB or from a TF card. Five buttons handle play/pause, volume and loop or one-shot playback, and a 3W amplifier drives the included speaker. It suits hobbyists building greeting cards, music boxes, talking displays or motion-triggered announcements, not shoppers wanting a finished consumer gadget.
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This is a voice recording and MP3 playback module with a speaker and a PIR (human body infrared) sensor. The board is small and light, and it is simple to operate. It can connect to a human body infrared sensor module, so audio plays whenever the sensor is triggered.
Five buttons control play and pause and adjust the volume. Playback modes include loop, jog play and single-pass playback. Songs are stored either in the board's SPI flash or on a TF card. If both are present, the TF card plays first.
Songs and recordings must be in MP3 format. A song larger than 4MB has to be copied to a TF card, which then goes into the card slot on the board. The module can be used for DIY welcoming toys, greeting cards and music boxes. It can also be used in public places such as shops, safety experience halls, construction sites, shopping malls, elevators, banks, ATM teller machines and display areas.