DAQ CPlate HAT

DAQ CPlate HAT is a stackable and interchangeable add-on circuit board that allows you to interact with the outside world using your Raspberry Pi.

DAQ CPlate HAT is designed to provide a robust set of features at minimal cost while using the fewest pins possible on the Raspberry Pi 40-pin headers. The DAQ CPlate only requires two dedicated pins, yet eight of these Pi-Plates can be stacked to provide 64 analog inputs, 64 digital inputs, 56 open collector outputs, and 16 analog outputs. Pi-Plates are mechanically and electrically compatible with all revisions of the Raspberry Pi with 40 pin headers (including the Raspberry Pi 3 Model B and Pi Zero) and are designed to satisfy the needs of makers, hobbyists, experimenters, and professionals.

The Pi-Plates DAQ CPlate (DAC-SEE) adds a rich set of input/output options to your Raspberry Pi. It includes 7 powerful digital outputs for driving external devices such as relays and high current LEDs as well as 8 analog-to-digital inputs for measuring temperature, voltage, humidity, and more.  In addition, there are eight digital inputs, two analog outputs, and seven general-purpose indicator LEDs. 

Board layout:

Note: You can also look at the bottom of the board and see the function of each terminal.

• Analog Inputs
  • Eight protected inputs
  • 0 to 4.096V input range
  • 10 bit resolution
  • Dedicated channel for measuring power supply voltage
• Analog Outputs
  • Two protected outputs
  • 0 to 4.096V output range
  • 10-bit resolution
• Digital Inputs
  • 8 protected inputs
  • 3.3 and 5.0 logic compatible
  • Each input capable of reading a DS18B20 temperature sensor
  • Can be polled or programmed to generate an interrupt on change³
• Open Collector Outputs
  • 7 Outputs
  • Indicator LEDs on each output
  • 350mA sink current for each channel
  • Built in flyback current protection
  • Maximum load voltage of 12VDC
• Pulse Width Modulators (PWM)
  • Two protected independent outputs
  • 10 bits of resolution
  • Resource shared with Analog Outputs
• Programmable Pushbutton
  • Can be programmed to act as a power switch by shorting GPIO 24 to ground when pressed
  • Can be polled or programmed to generate an interrupt on change³
  • Can be used in conjunction with bi-color LED to
    indicate system power state
• Auxiliary Input Power 
  • Allows use of more robust and better regulated 5VDC power supply
  • Reverse polarity protected

Specifications:

• Dedicated onboard processor - PIC16F1517
• Provides real-time data collection
• Allows for future code updates
• Only needs two dedicated RPI pins (GPIO 25 and CE1)
• All features accessible via a rich Python command set
• Compatible with all versions of Raspberry Pi Computer
• The design allows up to eight DAQCplates to be stacked together for eight times the I/O
• Uses less than 20mA of DC current during standby
• Conforms to ROHS, FCC Part 15 Class A, and CE standards
• All inputs and outputs ESD and overvoltage protected
• Protects your Raspberry Pi while providing enhanced I/O
• Includes programmable bi-color LED
• Additional 14-pin header included if B+ signals are required
• Capable of reading up to seven HC-SR04 distance sensors
• Each DAQCplate is 100% tested and verified
• Each of the 7 Digital Outputs is an open collector Darlington transistor
• Maximum sink current: 350mA
• Maximum load voltage: 12VDC
• On voltage is typically 1.1V with a load current of 200mA
• When using a relay or solenoid, the high side power supply should be connected to the “Flyback Protection” terminal
• If necessary, the onboard 5VDC is available on pins 9 and 10. If you choose to use it then make sure your power supply can provide enough current for your Raspberry Pi (~700mA), your Pi-Plates (~90mA for each DAQCplate with all LEDs on) and any components you connect to a DOUT terminal.
• Detailed Online Users Guide with Examples
• Dimensions: 100mm long x 75mm wide X 11mm high

Packing list:

• 1 x DAQ CPlate HAT 
• 4 x Nylon PCB stand

• Users Guide with Examples
• Getting started
• Command Set Quick Reference Guide