Electronic enthusiasts enjoy building projects using the BeagleBone development boards but interested in a new open source ADC board which has been specifically created for the BeagleBone.
Details of the new open source ADC board for BeagleBone has been posted to the Google’s open source student programs and software releases, which reads.
Working with electronics, we often find ourselves soldering up a half baked electronic circuit to detect some sort of signal. For example, last year we wanted to measure the strength of a carrier. We started with traditional analog circuits — amplifier, filter, envelope detector, threshold. You can see some of our prototypes in the image below; they get pretty messy.
While there’s a certain satisfaction in taming a signal using the physical properties of capacitors, coils of wire and transistors, it’s usually easier to digitize the signal with an Analog to Digital Converter (ADC) and manage it with Digital Signal Processing (DSP) instead of electronic parts. Tweaking software doesn’t require a soldering iron, and lets us modify signals in ways that would require impossible analog circuits.
There are several standard solutions for digitizing a signal: connect a laptop to an oscilloscope or Data Acquisition System (DAQ) via USB or Ethernet, or use the onboard ADCs of a maker board like an Arduino. The former are sensitive and accurate, but also big and power hungry. The latter are cheap and tiny, but slower and have enough RAM for only milliseconds worth of high speed sample data.
For more details and full specifications jump over to the Google Open Source Blog via the link below.