![]() How to program MLX90614 infrared thermometer on Arduino To connect the infrared thermometer with Arduino follow the following electrical diagrams. SCL: clock signal pin of the I2C interface. It will depend on the voltage regulator but the normal thing is that you can supply 5V or 3V3.ģ. The connection of the infrared thermometer with Arduino is very simple since it uses the I2C communication interface like many other components.ġ. How to connect MLX90614 infrared thermometer with Arduino The Y axis represents the temperature of the object (To). The ambient temperatures (Ta) are represented on the X axis. In the following table obtained from the technical characteristics sheet of this particular model, there is a summary of the precisions. Regarding precision, it depends on the temperature range that you are measuring. The BAA model of the MLX90614 infrared thermometer supports a temperature range of -40✬ to 125✬ for ambient temperature and -70✬ to 380✬ for the surface temperature of objects. Depending on what you want to measure, you will have to choose one model or another. It is important to look at the temperature range that an infrared thermometer such as the MLX90614 can measure. They are identified by a 3-letter suffix. Within this family there are several models. The name MLX90614 refers to a family of infrared thermometers. Technical characteristics of the MLX90614 By heating both the metal can glow red and even white. It resembles the big furnaces in steel mills when they melt metals. Even if you can heat a body a lot, it can emit visible light. The higher the temperature of the body or object, the faster the molecules move and the more infrared radiation the body emits. This radiation is below the visible spectrum of light and therefore we, humans, cannot see it. Also, when they move, they emit infrared radiation. They don’t stand still even if you tie them up. They move like kids when they have a chocolate overdose in a ball park. The molecules that are inside our body or any object are not standing still. So how can an infrared thermometer know that your body is at 36✬? Below this range, you can suffer hypothermia and above the same, you have fever. The human temperature is between 36✬ and 37.2✬. Source: AFP Basic principle of the infrared thermometer There’s even an infrared thermometer that connects to a mobile app. ![]() You can find different prices, qualities and benefits in the market. The infrared thermometer has become very popular. Especially when the surface to be controlled is not accessible to measure with a contact thermometer. This last function is very important since it can prevent problems inside the machines and electronic devices. ![]() It is used for medical and agricultural use or to measure the temperature of equipment or a device. First, you have to understand what it is and its basic principle and then put it into practice. In this article, I will talk about how an infrared thermometer works and how to use it with Arduino. It is based on the Stefan-Boltzmann Law and how a body emits infrared radiation that is proportional to its temperature. However, the technology behind the infrared thermometer with Arduino is not easy. It is an effective way to make temperature measurements in situations where it is difficult to access the surface to be measured. The MLX90614 infrared thermometer with Arduino allows you to make temperature measurements without the need to be in contact with the surface.
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