Library — Mlx90614 Proteus
To visualize the output:
If the library loads but never responds (always NACK):
Let’s simulate a complete non-contact thermometer using:
| Pin | Name | Function | |-----|----------|------------------------------| | 1 | VDD | +3.3V or +5V (check model) | | 2 | VSS | Ground | | 3 | SCL | I2C Clock | | 4 | SDA | I2C Data | mlx90614 proteus library
Note: Some library versions have an extra
PWMorVOUTpin – ignore if not used.
If you cannot find a stable MLX90614 library for Proteus, consider these alternatives:
However, for professional PCBs with multiple peripherals, Proteus remains superior, and the custom MLX90614 library is still the best workaround. To visualize the output: If the library loads
This document describes creating and using a Proteus-compatible library for the MLX90614 infrared (IR) temperature sensor (I2C, SMBus). It covers component model design, symbol and PCB footprint, electrical behavior, I2C communication, limitations, verification, and example simulation setup.
The Melexis MLX90614 is a staple in modern embedded systems. As an infrared thermometer, it allows microcontrollers to measure temperature without physical contact, making it ideal for medical devices (thermal guns), industrial maintenance, and smart home automation.
However, for firmware developers and hobbyists, a significant bottleneck exists before hardware prototyping: Simulation. Proteus Design Suite (ISIS) is the industry standard for simulating microcontroller circuits. Unfortunately, the default component libraries in Proteus do not include the MLX90614. Let’s simulate a complete non-contact thermometer using: |
This creates a paradox: How do you write, test, and debug I2C code for an MLX90614 without soldering a single wire? The answer lies in the MLX90614 Proteus Library—a custom-built simulation model.
This article serves as a complete resource: what the library is, where to find it, how to install it, how to use its advanced features, and how to write the firmware that drives it.