Datasheet

Measurement Computing [phone]
1
[e-mail] mccdaq.com
MCC 118
Measurement Computing [phone]
1
[e-mail] mccdaq.com
Raspberry Pi Interface
The MCC 118 header plugs into the 40-pin
general purpose I/O (GPIO) connector on a
user-supplied Raspberry Pi. The MCC 118
was tested for use with all Raspberry Pi
models with the 40-pin GPIO connector.
HAT configuration
HAT configuration parameters are stored
in an on-board EEPROM that allows the
Raspberry Pi to automatically set up the
GPIO pins when the HAT is connected.
Stackable HATs
Up to eight MCC HAT boards can be
stacked onto a single Raspberry Pi. Mul-
tiple boards can be synchronized using
external clock and trigger input options.
Users can mix and match MCC HAT
models in the stack.
Analog Input
The MCC 118 provides eight 12-bit SE
analog inputs. The analog input range is
fixed at ±10 V.
Voltage Measurement DAQ HAT for Raspberry Pi
®
The MCC 118 is a 12-bit, high-speed 8-channel voltage measurement DAQ HAT. The
MCC 118 is shown here connected to a Raspberry Pi (not included).
Sample Rates
• Single-board: max throughput is
100 kS/s.
• Stacked boards: max throughput is
320 kS/s aggregate
1
.
External Scan Clock
A bidirectional clock I/O pin lets users
pace operations with an external clock
signal or with the board’s internal scan
clock. Use software to set the direction.
Digital Trigger
The external digital trigger input is
software-configurable for rising or falling
edge, or high or low level.
Power
The MCC 118 is powered with 3.3 V
provided by the Raspberry Pi through the
GPIO header connector.
1 Rate achieved using a Raspberry Pi 3.
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
onto a single Raspberry Pi
Software
• MCC DAQ HAT Library;
available on GitHub
Supported Operating Systems
• Linux
®
/Raspbian
Programming API
• C, C++, Python
Overview
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.
A HAT is an add-on board with a 40W GPIO (general purpose input/output) con-
nector that conforms to the Raspberry Pi HAT specification.
The MCC 118 HAT provides eight single-ended (SE) analog inputs for voltage
measurements. Up to eight MCC HATs can be stacked onto one Raspberry Pi.
MCC DAQ HAT Library
The open-source MCC DAQ HAT Library
of commands in C/C++ and Python
allows users to develop applications on
the Raspberry Pi using Linux.
The library is available to download from
GitHub. Comprehensive API and hard-
ware documentation is available.
The MCC DAQ HAT Library supports
operation with multiple MCC DAQ HATs
running concurrently.
Console-based and user interface (UI)
example programs are available for each
API.