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Calibration of Spectrum Analyzers

Posted on April 29, 2022April 29, 2022 by Mark Donners
Different Noise types

White Noise
This is the most common and well-known form of noise. White noise is comprised of an equal amount of every frequency, all played at once. It happens in real life when your TV or radio makes static noise. However, because of our ears’ frequency response, we perceive higher frequencies as louder, so it doesn’t sound particularly balanced to most people.

Pink Noise
Pink noise is essentially bass-boosted white noise, where the amplitude decreases as the frequencies get higher.…

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Talking Tetris Clock You Must See

Posted on April 25, 2022April 26, 2022 by Mark Donners

This Talking Clock is based on @Brian Lough Tetris Clock. I added a wav/mp3 player enabling you to play sounds at set times. I also added a webserver to change settings, two text tickers to send you message out to the people in the room and I included a function to use this clock even without access to a WIFI network. All in all, I added some extra features to a already nice design.
This video is sponsored by @PCBWay They make great PCB board and offer good assembly service.…

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What I’m working on next! Coming Soon!

Posted on March 16, 2022 by Mark Donners

This is a VU meter/ spectrum analyzer that can replace some of the old analog needle’s….this is for the real audio lovers!!

…
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Old puzzle solved with Arduino

Posted on March 13, 2022 by Mark Donners

This is my digital version of an old riddle. A Farmer needs to take a Fox, a chicken and a sack of grain to the market. On the way he needs to cross a river in a small boat. In the boat there is only space for the farmer and 1 object a time. Without supervision, the Fox might eat the chicken or the chicken might eat the grain. How can the farmer get all items to the market? Depending on what country you are in, the version of the story might have different characters.…

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MakerCast Episode 38

Posted on March 6, 2022 by Mark Donners

Maker Cast is a monthly stream that wanders from maker channel to maker channel, where makers share their latest projects. We always try to have some new people on, that can talk about what they’re doing as well.
🎞 Previous episodes: https://www.youtube.com/playlist?list…
🐦 Maker Cast Twitter: https://twitter.com/TheMakerCast
📧 Newsletter for when MakerCast goes live: https://tinyletter.com/makercast

This MakerCast Episode will include an interactive Quiz at the end.…

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Use This Talking Arduino Timer To Have a pleasant visit to the CR

Posted on February 28, 2022 by Mark Donners

To explain about his Talking Arduino Timer, Imagine working at the office from nine to five punching numbers in a computer the whole day…All you have, to hold on to, is your coffee break! Fortunately, it is not that black and white for most people. We do have something in common though. There is a time that each and everyone of us needs to take a bathroom break. At some point, all the coffee we drink needs to leave the body, doesn’t?…

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Make music with this Stereo flyback ZVS driver

Posted on February 20, 2022 by Mark Donners

Make music with this Stereo flyback ZVS driver. You can drive 2 flyback transformers to create a 2 channel sound ( Stereo ). You can use square wave music as the sound course.
It’s a fun little project that you can use to create awesome videos. Also, you will learn how to drive Flyback transformers; a technique that was used in old TV sets but if becoming less and less every day.
You can use any flyback transformer that you would like.…

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Illuminate your diploma because you should be proud

Posted on February 16, 2022 by Mark Donners

This is how I illuminate my achievements and I mean that literary. I took my diploma ( and my wife’s) digitalized it, engraved it and put it up my wall. It includes some light sensitive electronics that will illuminate the diploma accordingly.
This is an open source project, all schematics, software and building instructions are available for you. Use it, change is, heck even sell it. It’s ok but if you do one or more of the above, please give me credit by linking back to my channel.…

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How to build a Powerful but easy Tesla Coil

Posted on February 9, 2022 by Mark Donners

This Tesla Coil is based on the principle of a slayer exciter that I first encountered in a Russian design. That’s why I called it the Russian Slayer Exciter
This is a High voltage project and building and or using it can by dangerous. Electricity can kill you! This is not for beginners. This video is for educational purpose only. If you decide to build this or a similar setup, you do so at your own risk!
This is an open source project, all schematics, software and building instructions are available for you.…

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Another Great Video Maker Cast

Posted on February 4, 2022February 4, 2022 by Mark Donners

Maker Cast is a monthly live show with amazing Makers from all over the interwebs! Join us as we talk about our newest projects and go behind the scenes of our latest creations. Each month, the show is hosted by a different maker. Find all the episodes here: https://www.youtube.com/watch?v=9noea…

You can subscribe to the newsletter here: https://tinyletter.com/makercast

And follow TheMakerCast on Twitter here: https://twitter.com/TheMakerCast…

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