3.3V 8-Channel RTD100 Temperature Sensor HAT for a Raspberry Pi 3/4 Assembled

This fully assembled and tested 3.3V 8 channel RTD100 temperature sensor HAT is a great addition to your Raspberry Pi 3/4. It is designed to provide accurate temperature readings using 2/3/4 wire RTD 100 probes. It uses up to 8 of the 3.3V RTD100 modules that "Snap" into the RTD sockets located on top. The sensor function is specifically for temperature, and it operates on DC current type. The output type is digital, and it is suitable for DIY educational applications as well home automation. It has applications in various industries such as industrial automation and motion controls. It also has applications in business and industrial settings.  
 
The 3.3V RTD100 Modules shown in the photos are included for this board and have been assembled and thoroughly tested using RTD100 temperature sensor probes and reference resistors.    
 
Python3 and C Drivers and a simple 8-Channel Basic demo application that provides temperature data collection to a file are provided, that work on a Raspberry Pi 3/4 using the SPI protocol with purchase.
 
Power to the board is provided internally by the Raspberry Pi and if desired, externally using a 3.3V regulated power supply using an onboard jumper. 8 Status LEDs provide indication that each RTD100 module is active.  The RTD100 modules firmly "Snap" into the female rows of 8-Pin sockets located on the top of the board.  The Raspberry Pi is firmly mounted underneath using brass spacers.

Benefits and Features as specified in Analog Devices Datasheets:
     
      • Integration Lowers System Cost, Simplifies Design Efforts, and Reduces Design Cycle Time 
      • Simple Conversion of Platinum RTD Resistance to Digital Value 
      •  Handles 100Ω to 1kΩ (at 0°C) Platinum RTDs (PT100 to PT1000) 
      • Compatible with 2-, 3-, and 4-Wire Sensor Connections
      • SPI-Compatible Interface    
      • High Accuracy Facilitates Meeting Error Budgets
      • 15-Bit ADC Resolution; Nominal Temperature Resolution 0.03125NC (Varies Due to RTD Nonlinearity)
      • Total Accuracy Over All Operating Conditions: 0.5NC (0.05% of Full Scale) max 
      • Fully Differential VREF Inputs • 21ms (max) Conversion Time 
      • Integrated Fault Detection Increases System Reliability 
      • ±45V Input Protection • Fault Detection (Open RTD Element, RTD Shorted to Out-of-Range Voltage, or Short Across RTD Element)
 
Please note that required Raspberry Pi 3/4 microcontroller and the 2/3/4 wire RTD100 Temperature probes must be provided by the user or purchased separately.
 
Please note that this is a low power 3.3V version designed to work specifically with the Raspberry Pi 3/4 microcontrollers and cannot be connected to 5.0V devices.