One of solution to build sensor system that can measure high temperature without damage the system is using contactless or non-contact temperature sensor. This sensor can sense temperature of an object without touch the object.
After the arrival of the parcel, you have 30 days to contact Arduino customer support that you are in desire to return any or all products from your order. After our colleagues replied, you have 14 days to return your Product (and any promotional merchandise supplied with the Product). L-Arginine is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.
Mlx90614 is a infrared based sensor, it measure the temperature based on infrared emitted by an object. It senses electromagnetic waves in the range about 700 nm to 14,000 nm.
Mlx90614 is a great cheap sensor that cost under 10$.
Sensor Spesification
These are some good feature of this sensor taken from it's datasheet.
- Small size, low cost
- Factory calibrated in wide temperature range:
40 to 125 °C for sensor temperature and
70 to 380 °C for object temperature. - High accuracy of 0.5°C over wide temperature
range (0.+50°C for both Ta and To) - Measurement resolution of 0.02°C
- Available in 3V and 5V versions
Wiring Diagram
Contact Arduino
Vin -> 3.3V
GND -> GND
SCL -> SCL or A5
SDA -> SDA or A4
You can choose to connect sensor I²C pin to arduino SCL, SDA or arduino pin A4,A5 they have the same function. Make sure use 3.3V for 3.3V module type. Because it will damage if connected to 5V. I damaged mine twice.
MLX90614 With Arduino Code
Before you start the code, make sure you have the library. Download library from adafruit here.
You can get the sample code to measure temperature using the library sample or copy code below :
Paste the code above to your arduino IDE and upload. After done uploading, you can test the sensor. It should works now!. You can measure an object temperature by face the sensor toward the object.
Watch the full video tutorial below :
Add an Alarm if temperature reading is more than threshold
If you want to make some alarm based on this sensor, you can simply add an buzzer to pin 2 of arduino and the ground connected to ground.
In this example I will set the threshold to 37. So every time the temperature read more than 37 degrees of celsius. It will turn on the buzzer. Here's the complete code. You can easily edit the threshold too.
Introduction
It is possible to chain Arduinos together in such a way as to get communication between the two. Having Arduino-Arduino communication can be useful for many projects, such as having one Arduino to run motors and having another sense the surroundings and then relay commands to the other Arduino. This can be done in several methods, using I2C and Serial, to list a few.
This tutorial will focus on Arduino-Arduino communication through the serial ports (RX and TX).
Schematic
Humorsoft copies of stories italicized. The schematic below shows how to connect the two Arduinos together. This shows two Unos, but if a Mega is used, it can be connected to any of the Serial ports on the Mega as long as that is accounted for in the code. Infinite stratos season 2 episodes.
There has to be a common ground between the two or else it will not function properly. Also, note that TX goes to RX and RX goes to TX.
Coding
One of solution to build sensor system that can measure high temperature without damage the system is using contactless or non-contact temperature sensor. This sensor can sense temperature of an object without touch the object.
After the arrival of the parcel, you have 30 days to contact Arduino customer support that you are in desire to return any or all products from your order. After our colleagues replied, you have 14 days to return your Product (and any promotional merchandise supplied with the Product). L-Arginine is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.
Mlx90614 is a infrared based sensor, it measure the temperature based on infrared emitted by an object. It senses electromagnetic waves in the range about 700 nm to 14,000 nm.
Mlx90614 is a great cheap sensor that cost under 10$.
Sensor Spesification
These are some good feature of this sensor taken from it's datasheet.
- Small size, low cost
- Factory calibrated in wide temperature range:
40 to 125 °C for sensor temperature and
70 to 380 °C for object temperature. - High accuracy of 0.5°C over wide temperature
range (0.+50°C for both Ta and To) - Measurement resolution of 0.02°C
- Available in 3V and 5V versions
Wiring Diagram
Contact Arduino
Vin -> 3.3V
GND -> GND
SCL -> SCL or A5
SDA -> SDA or A4
You can choose to connect sensor I²C pin to arduino SCL, SDA or arduino pin A4,A5 they have the same function. Make sure use 3.3V for 3.3V module type. Because it will damage if connected to 5V. I damaged mine twice.
MLX90614 With Arduino Code
Before you start the code, make sure you have the library. Download library from adafruit here.
You can get the sample code to measure temperature using the library sample or copy code below :
Paste the code above to your arduino IDE and upload. After done uploading, you can test the sensor. It should works now!. You can measure an object temperature by face the sensor toward the object.
Watch the full video tutorial below :
Add an Alarm if temperature reading is more than threshold
If you want to make some alarm based on this sensor, you can simply add an buzzer to pin 2 of arduino and the ground connected to ground.
In this example I will set the threshold to 37. So every time the temperature read more than 37 degrees of celsius. It will turn on the buzzer. Here's the complete code. You can easily edit the threshold too.
Introduction
It is possible to chain Arduinos together in such a way as to get communication between the two. Having Arduino-Arduino communication can be useful for many projects, such as having one Arduino to run motors and having another sense the surroundings and then relay commands to the other Arduino. This can be done in several methods, using I2C and Serial, to list a few.
This tutorial will focus on Arduino-Arduino communication through the serial ports (RX and TX).
Schematic
Humorsoft copies of stories italicized. The schematic below shows how to connect the two Arduinos together. This shows two Unos, but if a Mega is used, it can be connected to any of the Serial ports on the Mega as long as that is accounted for in the code. Infinite stratos season 2 episodes.
There has to be a common ground between the two or else it will not function properly. Also, note that TX goes to RX and RX goes to TX.
Coding
When sending things through serial, everything is sent in bytes. These bytes are then read one byte at a time by the other Arduino. When it is just characters being sent through the serial, it is relatively easy to convert from characters to bytes. However, if there are both characters and numbers are going through, this can lead to messing up the data because a number and a character can have the same byte value, but that does not make them the same. Numbers are also tricky because they may not actually fit in the byte.
Simple Code
The easiest way to get around this is to try to avoid using characters and numbers at the same time. This can be done by sending one character across, each with a different meaning. A good example of this comes from the Arduino Physical Pixel tutorial.
Upload the Physical Pixel code, which can be found in the Arduino IDE under: File >> Examples >> Communication, onto one Arduino.
Arduino Contact Sensor
On the other Arduino, upload:
When this is run, the LED attached to Pin 13 on the Arduino with the Physical Pixel code should flash on and off at a frequency of 0.5 Hz. To make sure this is actually the code doing that, the delays can always be changed in the above code.
In this code the job of 'H' was to turn an LED on and the job of 'L' was to turn the LED off. This can easily be applicable to getting various characters triggering more reactions.
However, depending on the application, this may not be enough and more drastic code may be required.
Complex Code
For sending data from one Arduino to another in a form that cannot be simplified, there are other options. One option is to turn everything sent from the Sender Arduino into characters and then have the Receiver Arduino read in the characters. The data is actually sent as bytes, but the Arduino can convert from characters to bytes and vice versa.
Sender Code
The sender code changes characters into bytes and, if necessary, it changes number values into characters before turning it into bytes. Below is a sample of the Sender code:
Receiver Code
The receiver will then receive the byte array from the other Arduino and interpret it there. Below is the code for the receiver. Note that this code is intended for a Mega since it will interpret the data received from the other Arduino and then print to the Serial Monitor what it received so that the user can check it. This debugging can be avoided by using an Uno and then printing what was found onto an LCD screen that uses I2C communication.
Contact Microphone Arduino
There is one flaw with this program as it is now. It results in only a character array, so if the integers were desired, they are lost without further work on the data.
Arduino Non Contact Thermometer
Further tutorials have been made to show how this data may be manipulated by splitting strings or getting floats from the character arrays.
