Temperature-to-period circuit provides linearization of thermistor response

Designers often use thermistors rather than other temperature sensors because thermistors offer high sensitivity, compactness, low cost, and small time constants. But most thermistors’ resistance-versus-temperature characteristics are highly nonlinear and need correction for applications that require a linear response. Using a thermistor as a sensor, the simple circuit in Figure 1 provides a time period var ...

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Using an MMA7455 accelerometer with an ESP32 board

The MMA7455L is a Digital Output (I2C/SPI), low power, low profile capacitive micromachined accelerometer featuring signal conditioning, a low pass filter, temperature compensation, self-test, configurable to detect 0g through interrupt pins (INT1 or INT2), and pulse detect for quick motion detection. 0g offset and sensitivity are factory set and require no external devices. The 0g offset can be customer ca ...

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Intro to LED Strips

https://youtu.be/IbkUL7U1qIA LED strips are a very fun and effective way to give lots of glow and color to a project. In this Instructable you will learn about the basic kinds of strips and how to hook them up to the Intel Edison with Arduino breakout board. These circuits include hardware needed for external power and how to set up a button and potentiometer to blink and fade using Intel's special flavor o ...

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DIY USB 5V Solar Power Bank

Solar energy is renewable, free, widely available and clean form of energy. It is considered as a serious source of energy for many years because of the vast amounts of energy that is made freely available, if harnessed by modern technology. Many people are familiar with so-called photovoltaic cells, or solar panels, found on things like spacecraft, rooftops, and handheld calculators. The cells are made of ...

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Transistors- The 70-year-old invention that changed the world

Its been 70 years since the fundamental building block of electronics was created, and it has been getting smaller, and better since then. The invention that won the Nobel prize for John Bardeen, Walter Brattain, and William Shockley in 1956 revolutionized electronics and made it into the IEEE milestone list. Before 1947 computers used vacuum tubes, which could be several inches long, consumed massive amoun ...

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Arduino: CNC Machine / Part 2

Hey guys this is part 2 of my Arduino CNC machine! Thanks to you guys you motivated me to make my next part into building this! This is me building the y-axis on the CNC machine. Hope you guys enjoy! Step 1: Patreon As you may or may not know, I am Kester. I have a YouTube channel that is based on making electronics videos and diy videos and tutorials. As me making lots of videos and putting time and lots o ...

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Creating footprints in KiCad using a scanner

Some time ago I sourced a number of very cheap SD card sockets from China for a hobby project I was working on. Sadly, when it came to PCB design, I couldn’t find the footprints for this particular socket anywhere – the part being a proprietary invention of the factory rather than a cheap knockoff of a reputable brand like Amphenol or Molex for which drawings are readily available off of snapeda.com. Turns ...

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WattUp – RF based Wireless Charging at a Distance

Recently, many big companies such as Samsung have developed wireless chargers which work by induction. These chargers usually consist of a station which needs to be in contact with the device in order to charge. The station defeats the purpose of being able to move and walk while still charging the device. Energeous, a global leader in RF- based wireless charging, created the award-winning device WattUp in ...

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Smartphone Controlled Cat Laser

https://youtu.be/Q05TAoPIHtQ I've been wanting to start exploring the world of microcontrollers and programming for some time now, so I came up with this simple project which uses an app called "Blynk" to allow you to wirelessly control an Arduino board through your wifi. Now obviously the end result isn't the most practical device you'll ever build, but this was a great way for me to learn the fundamentals ...

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A LASER TREATMENT TO IMPROVE PAPER ELECTRONICS

NanoEngineers” research group at Iowa University have been devoting efforts to use graphene and its amazing properties in their sensors and other technologies. Graphene has many extraordinary properties. It is about 100 times stronger than the strongest steel. It conducts heat and electricity efficiently and is nearly transparent. Inspired by some recent projects about using inkjet printers to print multi-l ...

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Arduino Nokia 5110 Tutorial #2- Displaying Customized Graphics

INTRODUCTION In one of our previous tutorials we did an introduction on how to use the Nokia 5110 LCD  with the Arduino, the tutorial covered displaying texts with different fonts etc. For this tutorial, we are taking things a little bit further and will be working through the display of customized graphics on the Nokia 5110 LCD display. This tutorial will particularly be useful for those who want to displa ...

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Print Conductive Circuits With an Inkjet Printer

This tutorial will teach you how to modify your average inkjet printer to be able to print electrically conductive circuits. This technology is fairly new but can provide a faster and safer prototyping option for DIY printed circuit boards. This project also acts as an introduction to the larger field of printed electronics. Step 1: Parts Needed Inkjet Printer ( Brother MFC-J450DW)Silver Nanoparti ...

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