Measurement Computing Corporation has announced the launch of a voltage measurement add-on for the Raspberry Pi and compatible single-board computers: the MCC 128 Voltage Measurement HAT, offering up to eight inputs and stackable to an impressive 64 channels.
Designed for precision voltage measurements, the MCC 128 Voltage Measurement HAT uses a 16-bit resolution and allows for multiple analog input ranges across eight single-ended or four differential-ended inputs. It offers sample rates up to 100 kilosamples per second (100kS/s), which grows as the HATs are stacked: Up to eight HATs can be attached to a single Raspberry Pi for a total of 64 channels and 320kS/s sampling rate.
The software for the MCC 128, along with the company's other data acquisition HAT devices, is provided as C and Python libraries released under the permissive MIT License and published to GitHub.
Two versions of the MCC 128 are available: The standard MCC 128 includes screw terminals for signal connection; the MCC 128-OEM leaves the signal points unpopulated, allowing for users to solder on custom connectors — providing they fit in the footprint, of course.
More details are available on the Measurement Computing website, where the HAT is up for sale at $199 in standard or OEM guises; those who don't need differential input support and could settle for 12-bit instead of 16-bit resolution, meanwhile, can opt for the company's older MCC 118 design at $99.