DIY Pocket Bluetooth Speaker (Part 3)

dcexpert

DIY Pocket Bluetooth Speaker (Part 3) [Copy link]

This time I changed to a bluetooth motherboard with display, model is Sanshui A38S. This motherboard can display FM frequency, TF/USB play number, volume and other parameters, which is more intuitive and convenient. I was lazy and glued the motherboard to the speaker, which looks different.

This motherboard is an external button, the button is ADKEY mode, by connecting resistors of different resistance values to achieve different button functions. Through experiments, it is found that 1K resistors are used to achieve 4 buttons, representing the next song/volume up, previous song/volume down, play/pause/FM station selection, mode switching and other functions.

I found 4 small buttons of different colors and fixed them to the side of the speaker.

吾妻思萌

Awesome!