Appendix A — Registers (condensed)
Appendix B — Code Samples (select excerpts)
Appendix C — Test Vectors
Appendix D — Change Log
Appendix E — References
Deliverables (suggested in repository)
Estimated development timeline (single developer)
If you want, I can:
Which deliverable should I produce first?
Title: Integrating the MLX90614 Infrared Thermometer in Proteus ISIS: Library Compilation, Simulation, and Firmware Development
Abstract
This paper provides a comprehensive technical guide on simulating the MLX90614 non-contact infrared thermometer within the Proteus Design Suite. As the MLX90614 is not included in the standard Proteus library, this document outlines the methodology for integrating third-party libraries, configuring the simulation environment, and developing embedded firmware to interface with the sensor via the SMBus protocol. This guide is intended for embedded systems engineers and students requiring virtual prototyping capabilities for thermal sensing applications.
Connect as follows:
| MLX90614 | Arduino (Proteus model) | |----------|-------------------------| | VDD | +5V | | VSS | GND | | SCL | A5 (or dedicated SCL) | | SDA | A4 (or dedicated SDA) |
Add pull-up resistors: 4.7kΩ from SCL to +5V, and SDA to +5V. mlx90614 proteus library
The MLX90614 communicates via SMBus. While similar to I2C, SMBus has specific timing and protocol requirements. The standard I2C library in Arduino (Wire.h) can be adapted, but using a specific MLX90614 library (such as the Adafruit MLX90614 library) simplifies implementation significantly.
You cannot manually turn a knob on the MLX90614 symbol, but you can use the Proteus VSM Studio or DC Generator via the SPI or I2C debugger. Some advanced libraries include a thermal slider. If yours does not:
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.
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.
Some websites (TheEngineeringProjects, GitHub, ElectroSome) claim to have a “MLX90614 Proteus library” in .IDX / .LIB format.
Be cautious: Many are fake, outdated, or virus-risks. Always scan files and check user comments. Appendix A — Registers (condensed)
#include <Wire.h> #define MLX_ADDR 0x5Afloat readTemp(byte registerAddr) Wire.beginTransmission(MLX_ADDR); Wire.write(registerAddr); Wire.endTransmission(false); // Send repeated start
Wire.requestFrom(MLX_ADDR, 2); byte lsb = Wire.read(); byte msb = Wire.read(); int raw = (msb << 8)
void setup() Wire.begin(); Serial.begin(9600);
void loop() Object: "); Serial.println(object); delay(500);
Simulation Note: Proteus will show the I2C debugger logging 0x5A requests. If you get 0xFF or 0x00 responses, check that the MLX90614.HEX file is in the same directory as your .DSN project file (Proteus sometimes requires a local copy of the HEX file for simulation).