Raspberry Pi: driving a VU meter using a digital-to-analog converter
Here's a video demonstrating the result:
The music  is playing from a Raspberry Pi, with software running on the Pi digitally sampling the peak output audio level and writing that out to an 8-bit digital-to-analog converter (DAC). The DAC output is then used to drive the analog meter. If you're interesting in knowing how all this hangs together, keep reading.Read more...
posted: Mon, 06 May 2013 23:40 | permalink | comments