Gramophone for smartphone, crystal radio and bluetooth by cheungbx

Last crawled date: 4 years, 5 months ago

This is a gramophone that can use physical methods to amplify the sound acoustically. There are separate modules for this to work with smart phone, crystal radio or even to plug in a bluetooth module and speaker. You can make it a 3-in-1 set up.
Checkout my blog
http://billydiy.blogspot.com/2020/10/gramophone-for-smartphone-crystal-radio.html
and my youtube video for more details.
https://youtu.be/gwoCO-NX5VE