Here's a fun science experiment that makes DIY crystals overnight! DIY crystals are easy to create and teach kids about chemistry!
13 note MIDI Keyboard with Octave buttons There's a newer version with an arpeggiator here Whilst working on the update of the next Helios Synth I've put together the code for a little MIDI controlled keyboard. It might be useful to someone, so I've published it here. What is it? It's a simple 13 note MIDI-out keyboard with an up octave button and a down octave button. An LED lights brighter the higher the chosen octave. Is that it? Well yes, but I'm planning on adding an arpeggiator soon. You'll need; 15x Push buttons (push to make type) 15x 10k Ohm resistor 2x 220 Ohm resistor 1x 270 Ohm resistor 1x LED 1x Arduino Nano 1x MIDI DIN Connector Here's the Fritzing image; The Code Available here You'll also need the 47 effects midi library installed in your Arduino library. About The Code MIDI: The code is stuffed with comments, so go take a look at that, but essentially with a button press we send a midi message that looks like this; MIDI.sendNoteOn(49, 127, 1); // "Note C sharp On" To break that down, the 49 is the note number. Here's a list of midi note numbers that we use; MIDI Note numbers: octave C C# D D# E F F# G G# A A# B 0 24 25 26 27 28 29 30 31 32 33 34 35 1 36 37 38 39 40 41 42 43 44 45 46 47 2 48 49 50 51 52 53 54 55 56 57 58 59 3 60 61 62 63 64 65 66 67 68 69 70 71 4 72 73 74 75 76 77 78 79 80 81 82 83 5 84 85 86 87 88 89 90 91 92 93 94 95 ...so note number 49 is the same as a C# in the second octave. The next number is 127, which is the velocity of the note. 127 is full loudness, so for a silent note we send a 0, (in other words: stop playing the note) like this; MIDI.sendNoteOff(49, 0, 1); //"Note C Sharp Off" And the last number: '1' is the MIDI channel number. MIDI can send info on 16 different channels but we're just using channel 1. Octave Buttons The octave buttons count from 0 to 5, incrementing by +/- 1 with each press. We then send this number into an array of midi note numbers. So here's the array, made up of 12 notes, over 6 octaves; const int octaveSelected[][12] = { {24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35}, // Oct 0 {36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47}, // Oct 1 {48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59}, // Oct 2 {60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71}, // Oct 3 {72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83}, // Oct 4 {84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95}, // Oct 5 {96} // Oct 6 }; So now instead of sending a MIDI note number like '49'; MIDI.sendNoteOff(49, 0, 1); //"Note C Sharp Off" We send the array with the button count number inside it; MIDI.sendNoteOn(octaveSelected[octButtonPushCounter][1], 127, 1); // "Note C sharp On" Btw, the [1] is representing the second note in the array (remember: computers start counting at 0). So if you wanted the standard 'C' note, it would be the 1st item in the array which is [0]. Or if you wanted the last note it would be [12] etc. These numbers are hard coded to our push buttons. We also do a similar trick with the LED brightness. That's stored in an array; const int octLED_Brightness[] = {0, 10, 30, 50, 120, 255}; ...and those numbers control the PWM of the LED. That's basically how the code works. Enjoy! (and if you add an Arpeggiator to it please let me know)
Explore Your Crochet's free patterns blog and discover inspiring ideas to ignite your creativity. Read our post, 'Pocket Baby Dinosaur Free Crochet Patterns'.
Dragons are at the center of fantasy culture these days. Whether you’re watching How to Tame Your Dragon with your kids for the millionth time or Game of
Eu gostei muito desse, muito criativo.
Free amigurumi patterns... You can find interesting ideas, tutorials and crochet tutorials about amigurumi otter here. Lots of amigurumi free crochet patterns are waiting for you.
Did you know that the first terrarium was created by accident in the 1840s? This fascinating fact about terrariums not only marks the beginning of a rich
László Adóba is one of the best diorama builder I know and I'm a big fan. I recommended his previous books here, in my blog before, now there is a new one. Of course I already have it (actually it's a dedicated gift from the author) and it's just wonderful. The descrition of the book and the sample pages are from László Adóba's website (http://adobadiorama.hu/), where you can buy all of his books. In the second volume of Building Dioramas, Im going to present the process of creating everyday objects, some of them being absolutely common, others being less conventional. Recognizing tiny manifestations of things met regularly in real life makes much deeper impression in the viewer than objects seen rarely or never at all during our lives. Dioramas built using familiar accessories will seem much more life-like as the viewer gets involved easily at the very first sight. The book presents the detailed description of making more than 50 diorama accessories. Pieces of furniture, bathroom equipment, kinds of food and some metal objects take shape in front of the reader in 5 chapters on 78 pages. There are several simple pieces made of common materials, as well as more complex ones that need some special equipment and ingredients. This way beginners may find the book just as helpful as advanced modellers. The text is illustrated with more than 400 colour photos to make building much easier.
Ranging from 143 to 270 square feet per person, these compact dwellings stretch the limits of small-space living.
Bleaching gives pine cones an aged, whitewashed patina that works for both modern and rustic décor schemes!
...Как, вообще-то, и предполагалось, с лайткубом я игрался недолго. Очень скоро мне понадобилось настоящее студийное освещение. Поскольку сфера моих интересов - съемка предметов, первым делом я решил обзавестись источниками рассеянного света. А именно - ламповыми софтбоксами. Это -…
Have you ever wished you could bring a sense of garden peacefulness inside? Moss terrariums give the sensation of bringing a piece of your garden indoors.
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...Как, вообще-то, и предполагалось, с лайткубом я игрался недолго. Очень скоро мне понадобилось настоящее студийное освещение. Поскольку сфера моих интересов - съемка предметов, первым делом я решил обзавестись источниками рассеянного света. А именно - ламповыми софтбоксами. Это -…
Miniature artist Hannah Lemon's houseplants were a big hit, earning her a spot on season 2 of Best in Miniature. Learn more in the full interview!
We just traveled around Sweden to capture and understand the Swedish building styles more and we came across some really beautiful wooden houses that we’d love to share with you guys. Let’s dive into these innovative, wooden wonders! Swedish Cottage style This home is very unique. We love the many nooks and details. Notice how […]
