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MCC 118 Voltage Measurement DAQ HAT for Raspberry Pi Features Eight 12-bit voltage inputs 100 kS/s max sample rate (320 kS/s aggregate for stacked boards) 10 V input range Onboard sample buffers allow high-speed acquisition External scan clock I/O External digital trigger input Screw terminal connections Stack up to eight MCC HATs The MCC 118 is a 12-bit, high-speed 8-channel voltage measurement DAQ HAT. The onto a single Raspberry Pi MCC 118 is shown here connected to a Raspberry Pi (not included). Software MCC DAQ HAT Library Overview available on GitHub The MCC 118 is a voltage HAT (Hardware Attached on Top) board designed for use with Raspberry Pi, the most popular single-board computer on the market today. Supported Operating Systems A HAT is an add-on board with a 40W GPIO (general purpose input/output) con- Linux /Raspbian nector that conforms to the Raspberry Pi HAT specification. The MCC 118 HAT provides eight single-ended (SE) analog inputs for voltage Programming API measurements. Up to eight MCC HATs can be stacked onto one Raspberry Pi. C, C++, Python Sample Rates Raspberry Pi Interface MCC DAQ HAT Library Single-board: max throughput is The MCC 118 header plugs into the 40-pin The open-source MCC DAQ HAT Library 100 kS/s. general purpose I/O (GPIO) connector on a of commands in C/C++ and Python user-supplied Raspberry Pi. The MCC 118 allows users to develop applications on Stacked boards: max throughput is 1 was tested for use with all Raspberry Pi the Raspberry Pi using Linux. 320 kS/s aggregate . models with the 40-pin GPIO connector. The library is available to download from GitHub. Comprehensive API and hard- External Scan Clock HAT configuration ware documentation is available. A bidirectional clock I/O pin lets users HAT configuration parameters are stored pace operations with an external clock The MCC DAQ HAT Library supports in an on-board EEPROM that allows the signal or with the boards internal scan operation with multiple MCC DAQ HATs Raspberry Pi to automatically set up the clock. Use software to set the direction. running concurrently. GPIO pins when the HAT is connected. Console-based and user interface (UI) Digital Trigger example programs are available for each Stackable HATs The external digital trigger input is API. Up to eight MCC HAT boards can be software-configurable for rising or falling stacked onto a single Raspberry Pi. Mul- edge, or high or low level. tiple boards can be synchronized using external clock and trigger input options. Power Users can mix and match MCC HAT The MCC 118 is powered with 3.3 V models in the stack. provided by the Raspberry Pi through the GPIO header connector. Analog Input The MCC 118 provides eight 12-bit SE analog inputs. The analog input range is fixed at 10 V. 1 Rate achieved using a Raspberry Pi 3. Measurement ComputingMeasurement Computing (508) 946-5100(508) 946-5100 info mccdaq.cominfo mccdaq.com mccdaq.commccdaq.com 11MCC 118 Block Diagram +3.3 V Analog Input Conditioning Microcontroller Board Raspberry Pi SPI Address with Header 12-bit ADC Matching Scan Clock Digital Trigger I2C HAT EEPROM 3.0 V Reference OEM Version Stackable The MCC 118-OEM is designed with (unpopulated) header Connect up to eight MCC DAQ HATs onto a single connectors instead of screw terminals, and is functionally Raspberry Pi. Onboard jumpers identify each board in the equivalent to the standard version. The MCC 118-OEM stack. Use an external clock and connect the trigger inputs accepts 16 and 110 0.1 in. spacing header connectors. to synchronize the acquisition. Measurement Computing (508) 946-5100 info mccdaq.com mccdaq.com 2 Screw Terminals