One of the most thrilling childhood toys for the adventurous 1970s or 1980s kid was probably the toy walkie-talkie ... and speaker are housed in a neat 3D printed case. I2S is used for simplicity ...

There’s something seriously wrong with the Arduino walkie-talkie that [GreatScott ... covered his suboptimal CPU handwarmer, and his 3D-printed BLDC motor stator was a flop too.