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Introducing the BMP180 barometric sensor

This post is about how to use the BMP180 barometric sensor with the Arduino. It is also applicable for other similar barometric sensors. Introducing the BMP180 barometric sensor The BMP180 barometric sensor (model GY-68) is the one in  the following figure (front and back view). It is a very small module with 1mm x 1.1mm (0.039in x 0.043in).   RELATED CONTENT: Like ESP8266? Check out Home Automation Us ...

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Tiny Wireless Capsule Camera

Description Tiny, pill-sized cameras are frequently used in the medical field to visualize the gastrointestinal tract, particularly areas not readily accessible by bulkier devices. Increasingly, consideration is given to using these devices in patients who cannot tolerate, or are otherwise unwilling to undergo, a conventional colonoscopy. The possibility of displacing or augmenting these methods with tiny, ...

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Beginner-Friendly Two-Sided Development Board

MikroElektronika, the microcontroller development boards and accessory boards manufacturer, introduced a new development board for beginners and non-experts called Flip & Click. Flip & Click is a rapid prototyping tool that is an Arduino Due on one side, and four mikroBUS™ sockets on the other side. [caption id="attachment_36263" align="aligncenter" width="600"] The Two Sides Of Flip & Click Boa ...

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Bioengineers’ sweat sensor monitors glucose

Researchers at The University of Texas at Dallas are sweating the small stuff in their efforts to develop a wearable device that can monitor an individual's glucose level via perspiration on the skin. In a study recently published online in the journal Sensors and Actuators B: Chemical, Dr. Shalini Prasad, professor of bioengineering in the Erik Jonsson School of Engineering and Computer Science, and her co ...

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TORPEDO: an all-purpose switched-mode power supply

Having explained the theory, let’s see in practice the project of the SEPIC power supply.   In this post we discussed – on a theoretical level (even if in a simplified way) – the SEPIC switching converters, also highlighting advantages and disadvantages, and giving you the basics for the calculation of their components. Let’s get to the heart of the project, now; we will present a practical application ...

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Making a Geiger counter with 555 timer IC

Radioactive particles are found abundantly in nature. Whether they come from space or generated on Earth (radioactive waste, medical X-rays, etc), they are high-energy particles resulting from radioactive decays. The three major types of radioactive particles are named after the first three letters of the Greek alphabet: α (alpha are helium nuclei), β (beta are high-speed electrons), and γ (gamma are high-e ...

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MCU-based LED-VU Meter

From time to time, I see people trying to build an audio VU meter. In the analog era, that’s typically done with a voltage divider + a series of comparators; or using chips like LM3914/3915. Those chips are harder and harder to find, or you may need more resolution, or a different output profile. What to do? Modern MCUs offer an easy solution. their build-in ADC (10-bit or more) is more than enough for this ...

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