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News
Jun
2
Smoke click — high-sensitivity optical sensor for smoke detection
Posted by Lana Vulic on 02 June 2017 09:38 AM

The famous saying goes: there is no smoke without a fire. But there are some fires that start out so slow that you can’t even see them, and they produce large amounts of smoke. These so-called smoldering fires are hard to detect unless you have an optical sensor for smoke detection, like the one onboard Smoke click.

Smoke click

Smoke click carries the MAX30105 high-sensitivity optical sensor for smoke detection, from Maxim Integrated. The sensor includes internal LEDs, photodetectors, optical elements and low-noise electronics with ambient light rejection. The sensor can detect a wide variety of smoke particle sizes.

With a low power consumption of 0.7μA in Shutdown mode Smoke click is well suited for IoT applications.

Optical smoke detection sensors

An optical or photoelectric smoke alarm consists of a LED that transmits a light beam and a light sensor. If smoke particles disrupt the light beam the sensors sets off an alarm.

These types of smoke detector sensors are more responsive to smoldering fires, that start out slow and take a longer time to become flaming fires.

For more information about Smoke click see the product page.

Yours Sincerely,
MikroElektronika

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Mar
29
Heart rate 4 click – measuring heart rate with light
Posted by Lana Vulic on 29 March 2017 01:41 PM

Aristotle claimed that the heart is the most important organ in the body, more important than the brain. Galen said that this is the body part most closely related to the soul. We associate the heart with love.

A quickened heart beat represents an excited emotional state (among other things). You’ll be glad to know that you can track your heart-rate with our newest click board™ — Heart rate 4 click. And perhaps learn something more about your emotions.

Heart rate 4 click

The click carries the MAX30101 high-sensitivity pulse oximeter and heart-rate sensor from Maxim Integrated. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target MCU over I2C interface, with additional functionality provided by INT pin on the mikroBUS™ line.

Your heart rate increases when you exercise, when you are afraid, under stress, when you get excited about something. But while you are in a resting state a normal heart rate is somewhere between 60 and 100 beats per minute.

Pulse oximetry

Who knew that you can measure someone’s heart rate with light.

This measuring principle is based on infrared and red light absorption of oxygen saturated and oxygen unsaturated blood. Oxygenated blood absorbs more infrared light, and deoxygenated blood absorbs more red light.

By comparing the ratios of these two types of light the SpO2 readings are calculated.

For more information about the click see the product page.

Yours Sincerely,
MikroElektronika

Products mentioned

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Mar
21
Fever click – human body temperature sensor
Posted by Lana Vulic on 21 March 2017 05:05 PM

Peggy Lee singing “Fever” is one of those iconic tunes everyone knows. The lyrics get stuck in your head all day, once you hear it on the radio. That is why we named our newest temperature sensor board Fever click. A catchy name like this is bound to stick around.

Fever click

Fever click measures your body temperature with the accuracy of 0.1°C (37°C to 39°C). Just make sure that the sensor is in contact with the skin and you will get precise readings.

The click carries MAX30205 – a human body temperature sensor from Maxim Integrated.

What is the normal body temperature?

The temperature of a human body varies based on things like the age of the person, the time of the day, the activity one is performing, and so on. Your temperature is not going to be the same all the time, and that is normal. But the optimal temperature of a human body is 37°C.

If your temperature is around 38°C and 39°C you most certainly have a fever.

For more information about the click, see the product page.

Yours Sincerely,
MikroElektronika

Products mentioned

The post Fever click – human body temperature sensor appeared first on MikroElektronika.


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