7Semi AD849x Arduino Library

Arduino driver library for Analog Devices AD849x thermocouple amplifier modules.

This library provides a clean and lightweight API to read the analog output of AD849x amplifiers and convert it into accurate temperature values with optional filtering and calibration.

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Features

• Supports Analog Devices AD849x thermocouple amplifier family
  • Commonly used with K-type thermocouples
• ADC-based voltage reading
• Temperature conversion:
  • Celsius (°C)
  • Fahrenheit (°F)
  • Kelvin (K)
• Configurable parameters:
  • ADC reference voltage (Vref)
  • ADC resolution (max count)
  • Output offset voltage
  • Amplifier sensitivity (V/°C)
• Built-in ADC averaging for noise reduction
• Optional exponential (IIR / EMA) filtering for stable temperature output
• One-point temperature calibration support
• Basic sensor connection check (voltage range based)

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Important Notes

⚠️ Offset voltage and sensitivity depend on the exact AD849x IC and breakout module.
Always verify values from the datasheet or module documentation.

⚠️ The fault check is a basic connection indicator only.
It does NOT guarantee detection of open, short, or reversed thermocouples.

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Installation

Manual Installation

1. Download or clone this repository
2. Copy the folder into your Arduino libraries directory
   (usually located at Documents/Arduino/libraries)
3. Restart the Arduino IDE

Arduino Library Manager

1. Open Arduino IDE
2. Go to Sketch → Include Library → Manage Libraries
3. Search for 7Semi_AD849x
4. Click Install

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