I2S capture device
Illuminated Button
Audio spectrum analyzer teardown
Topping LA90pre teardown
QuantAsylum QA403 teardown
Audio switch with VU meter
Neurochrome Modulus-86 kit build
3D printed ribbon microphone
VUPPM kit build
Soviet VFD digital clock
Testing OLED module
Neon bargraph display teardown
LED digital display inspired by HP and Panaplex
Isolation transformer box