High Rhodes LP is out on vinyl. Itâs strictly limited, so get yours today! Purchase links:Â http://on.fb.me/1FFoyEF
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High Rhodes LP is out on vinyl. Itâs strictly limited, so get yours today! Purchase links:Â http://on.fb.me/1FFoyEF
(via https://www.youtube.com/watch?v=67f07HSY_SI)
I made a dusty hip hop beat this weekend by using the drum sounds of the 7-BIT BEAT BOXXX. I put a 70s funk break into the beat boxxx, and I'm very happy about the sound of it! Press play.Â
Here it is! The 7-BIT BEAT BOXXX is finally ready for presentation. Our final brief at AHO's Interactive Products course this semester was to invent a new product by using Arduino, and make an experience prototype that shows how it works. I have been working 4 weeks on this product.
I started out by putting together the electronic components on the Arduino and a bread board. Then I had to program the Arduino to include the functions I needed. When all that was ready, I started wondering what would be an interesting way of interacting with this drum machine. I then came up with the idea of a metronome that used drum samples instead of the traditional clicking sounds. I added some buttons too, to make it suitable for the more traditional drum machine users as well.
This is a lo-fi drum machine that contains 9 drum samples. The drum samples are easy to replace, so you can choose 9 custom sounds if you want, but you'll have to stay within the limits of 4 seconds sample time. The button on top left changes the sounds from three different sample banks. The other three buttons are dedicated to activate the samples. Big drum on the bottom left, snare on the bottom right, and hi-hat on the top right.
The most innovative part of this drum machine is perhaps the metronome, or the "tempo selekta" as I've called it. By adjusting the handle that says slow and fast, you control the tempo of the metronome. The metronome then triggers the bass drum and the snare, and makes a drum loop with the two samples. This is a very visual and entertaining way of setting the tempo of a track, and I imagine this is ideal if you're sitting down playing your instrument at home and wish you were accompanied by a drummer.Â
I gave the drum machine a retro look, inspired by synthesizer producers such as Robert Moog and Dave Smith. Some of the details are also a nod to the hip hop culture, f.i. the "beat boxxx" and "tempo selekta" titles and the Lo-Fi (Bad sound - ill music)-slogan (I stole that from Hi-fi-klubben).Â
The wooden side panels are made of mahogany, and the top and front panel are made out of white acrylic. I printed a transparent foil with instructions and my logo to put on top of the acrylic. I like the way it looks and sounds, and I'm very proud to say that I've build my first drum machine. I hope you'll like it!
My Arduino code
Here's the code I programmed for the 7-BIT BEAT BOXXX. It's too long to put in a text document here on tumblr, but you'll find it here!
Putting the final touches on the drum machine
Last week was pretty hectic, but I managed to complete the drum machine on saturday. Here are some photos showing the progress of my work.
The wooden panels are used for covering the Arduino and creating the retro synth-like box.Â
This metronome is used for activating the drum samples. You turn it on by rotating the knob on the right. The thing on top of this construction is used for changing the speed of the metronome. Push it down, and it goes faster.Â
These metal pads are used for activating the drum sounds. When the metronome hits these pads, it triggers the drum samples because it completes the circuit for a tiny moment.Â
This is how the BEAT BOXXX model looked before I put transparent foil with logos and instructions on the plastic.Â
I added some MPC buttons on the drum machine today. Turned out pretty cool!
Next up: make the metronome trigger each sample.
A couple quick sketches. Einar just told me that the drum machine actually has a 7-bit output. So maybe I'll have to change the name ... Haha
Final brief - update
I've stepped away from the spinning record idea, and now I'm working with a metronome that triggers samples. If you can adjust the BPM at the metronome, you'll be able to adjust the tempo of the drumbeat. The samples will be played in the order 1,2,3,2,1,2,3,2 etc. Sample 1 will be the big drum, sample 2 will be the hi-hat, and sample 3 will be the snare. That means that the metronome will make a pretty standard drum loop with a variable tempo.Â
Next week I'll try and make a working model of the drum machine that both looks good and expresses the functionality of the product. And in the end of next week I am going to make a video where I show how to use the product and make music with it. I will also change the sample codes a little bit, to make the drum samples as fresh as can be.Â
The last couple of days I've been trying to find new ways to generate the sounds on my drum machine. I'm thinking that if a record spins around on the drum machine I can place different drum sound sensors/activators on different places on the record, and by adjusting the tempo of the revolutions (RPM), I can adjust the BPM of the drum beat. But it's a lot more difficult than I thought it'd be, and I'm not sure if I can go through with this idea. Also, when I turn the motor on, the drum sounds get all distorted and weird... So far I've tried with two different dc motors and also a servo, but I haven't found one that works that way I had hoped.Â
A little update on the progress of my final brief this semester: I'm making a drum machine. So far it has 3 drum buttons (big drum, hi-hat and snare) and 1 sample bank button. The bank button switches between three sample banks, which gives the drum machine a total of 9 custom sounds. When sample bank 1 is activated, the LED-lights are switched off. When bank 2 is activated, the green light turns on. When bank 3 is activated, the red light goes on. If you press the bank button three times, you're back at the first sample bank and the lights are out. The drum machine has a jack cable output, perfect for studio use. The Arduino only has a memory of 32 kb, so the drum sounds are very lo-fi and dusty (and I really love that). The drum machine only has about 4 seconds of sampling time, so I'm working under tough limits. But I still think I'm on my way to create a cool product. The sounds on this video are sampled off the classic E-mu SP12 drum machine, which was launched in 1985, but got its renaissance lately because hip hop producers as Madlib, Jay Dee and MF Doom implemented it in their jazzy rap beats. I scaled the sounds down from the original 12 bit to 8 bit, and converted each sound to numeric codes.
Photo Maybe I'll change the drum buttons with something else that'll make the interaction with the drum machine more interesting. But I like it as a classic drum machine too, though that's not as innovative as creating something brand new. I'll see what I come up with.
I want the drum machine to have a vintage look, so I'll make a box for the Arduino with wooden panels on the side and a metal body (Moog-inspired).Â
Photo
I also made a logo and brand name for the drum machine:
Photo
And last but not least, some videos showing my progress this week.Â
Video
Video
Video
Arduino and Ultrasonic Range Finder
Today we worked on different electronic components and how to interact with them. fredrikstenbak and I studied how to use an ultrasonic range finder, the Maxbotix LV-EZ1 (click to open data sheet).
It sends out ultrasonic sound waves to find objects that are nearby the sensor, and it finds out just how close they are by measuring the time it takes for the waves to come back to the sensor. We connected an LCD-screen to the sensor to show the distance between the Range Finder and the object (Fredrik's hand in this example). See how it worked in this video!
Notice the sound in the video, it seems like the iPhone camera captured the ultrasonic sound waves. The display on our Arduino shows the distance from the hand to the sensor. It' s not calibrated correctly, that turned out to be a little too difficult for a one-day assignment.
For more information about the Ultrasonic Range Finder, visit Sparkfun.
Here's the code we used: #include <LiquidCrystal.h>// initialize the library with the numbers of the interface pinsLiquidCrystal lcd(12, 11, 5, 4, 3, 2);int sensorPin = 0;int sensorValue;long value = 0;int sensorMapped;void setup() { Serial.begin(9600); // set up the LCD's number of columns and rows: lcd.begin(16, 2); // Print a message to the LCD. lcd.print("Distanse i mm:");}void loop() { long mm; sensorValue = analogRead(sensorPin); sensorMapped = map(sensorValue, 0, 990, 0, 1550); // set the cursor to column 0, line 1 lcd.setCursor(0, 1); // lcd.print(sensorMapped);lcd.print(sensorMapped);}
Last week we learned how to create simple (and not so simple) electronic products by using the Arduino set. Here are some videos showing some of the things I made.
Eraser robot: https://www.dropbox.com/s/5ko7exl9g45x9kf/Video%2012.11.14%2C%2014.26.33.mov?dl=0
Rudolph the red-nosed robot: https://www.dropbox.com/sc/cc9zmv1387zczhm/AADKwLPqXK0vglkCo-OKv8V2a
Photocells and heating elements
This week's task was to discover how an electronic material works. My job was to focus on the photocell. Here's what I found:
Photocell. Look for resistance, photo resistor, photoconductive cell.
En motstand er noe som hindrer strÞm i Ä gÄ fra punkt A til punkt B. Motstandsevnen mÄles i Ohm, der mye motstand gir en hÞy Ohm-verdi.
En fotocelle kan variere denne motstanden, avhengig av hvor mye lys som treffer cellen. NÄr lysstyrken Þker, minsker motstanden, og mer strÞm slippes gjennom.
Fotoceller, eller fotoelektrisk celle er med andre ord en detektor som benyttes for Ä registrere lys, ultrafiolett og infrarÞd strÄling.
Lyssensoren er mulig ved hjelp av et fysisk fenomen, nemlig at noen stoffer endrer strĂžmledeevne nĂ„r de utsettes for lys, infrarĂžd- eller ultrafiolett strĂ„ling. Dette fenomenet kalles fotoledning eller fotokonduktivitet. Dette fenomenet ble fĂžrst oppdaget i 1873 i grunnstoffet selen. I dag er det CDS (cadmium-sulfid) som benyttes i lyssensorene, og derfor gĂ„r fotoceller ogsĂ„ under navnet CDS-celler. Â
Cadmium-sulfid blir ogsÄ brukt som farge-pigment, siden det har en sterk gulfarge.
Fotoceller er rimelige, smÄ, bruker lite strÞm, lette Ä bruke, og varer lenge, siden de ikke har noen bevegelige deler. Derfor blir fotoceller mye brukt i alt fra leketÞy til iPhones, kameraer og gatelykter. LeketÞy kan lage en lyd nÄr de fÄr lys pÄ seg, mobiltelefoner justerer lysstyrken pÄ skjermen nÄr rommet blir mÞrkere, og et kamera forandrer lysintensiteten pÄ bildene i forhold til lysstyrken i omgivelsene, og er det for mÞrkt skrus blitsen pÄ. Det samme skjer utendÞrs, gatelysene skrus pÄ nÄr det er mÞrkt ute.
Et annet spennende bruksomrÄde for fotoceller er i musikkforsterkere med innebygd tremolo-effekt. Slik jeg forstÄr det kan fotoceller mÄle nÄr lydsignalet nÄr en topp, siden det da lyser opp pÄ et meter, og dermed blir endringen i strÞm brukt til Ä skru volumet ned, slik at lyden fÄr en bÞlgende tremolo-effekt. En slik fotocelletremolo ble brukt blant annet i Fender sine forsterkere pÄ 60-tallet.
Julie was on my group, and she focused on heating elements. Here's what she discovered:
Varmeelement: Et varmeelement konverterer elektrisitet til varme til ved bruk av motstand, eller resistens. Det blir varmt nÄr elektrisitet strÞmmer gjennom det. Et typisk varmeelement er vanligvis laget av materialet nichrome. Nichrome er en legering som bestÄr av ca. 80 % nikkel og 20 % krom. 80/20-forholdet er det vanligste. Nichrom har relativt hÞy resistens, tÄler hÞye temperaturer, og har liten varmeutvidelse. Metall er altsÄ det vanligste materialet Ä bruke som varmeelement, men man kan ogsÄ bruke kjeramiske materialer og kompositter. StÞrrelsen pÄ varmeelementet avhenger av dimensjonene til produktet det skal brukes til. Hva kan det brukes til? Toastjern, hÄrfÞner, stekeovn, dusj, elektrisk varmeovn, krÞlltang, brÞdrister. Noen ganger er varmeelementet synlig (brÞdrister) og andre ganger ikke (krÞlltang). Det finnes ogsÄ noe som heter en varmepad, som er et lite varmeelement som er laget for Ä brukes nÊrme kroppen. Kobler man denne til en sensor og en mikrokontroller, kan man for eksempel lage en genser som regulerer varmen. Varmepadden har ogsÄ noen som heter en warmup-profile, og den sier noe om hvor varm den blir i forhold til tid. Vi ser at den blir raskt varm, og holder seg stabil, men noe Þkende over tid. Hvordan fungerer det? Noen materialer leder strÞm bra, og noen mindre bra. Vi snakker om hvor mye motstand vi finner i et materiale. I en elektrisk krets kan man bruke resistens for Ä kontrollere hvor mye strÞm som gÄr gjennom materialet. I en gammeldags glÞdepÊre er det en tynn trÄd som kalles et filament. Vi sender strÞm gjennom trÄden, og lampen blir sÄ varm at den avgir lys. Et varmeelement er i prinsippet et forstÞrret filament, men i et varmeelement trenger vi et mer robust materiale som tÄler gjentatte oppvarminger og nedkjÞlinger, og at den gir fra seg nok varme uten Ä bli for glÞdende. Derfor er det viktig Ä velge riktig materiale, som f.eks nichrome, som har en grei resistens. Jeg sier grei, fordi det er viktig Ä balansere nok resistens og nok strÞm. Er materialet for resistent, vil det ikke flyte nok strÞm gjennom til Ä avgi varme. For Ä justere hvor mye varme et varmeelement gir fra seg, mÄ man justere den elektriske strÞmmen, og ikke resistensen. Dette kan gjÞres automatisk eller manuelt. Download our pdf-presentation here: https://dl.dropboxusercontent.com/u/61111095/Fotocelle%20og%20varmeelement.pdf
App-assignment
For this brief we had to make a prototype of an app, a video showing how to use the app and last but not least, a web page where we showed the video. We worked in groups of four, consisting of Julie, Hanne, Jacob and me. Here's the result: https://dl.dropboxusercontent.com/u/109283507/CC.html
The London weekend
While most of the students went to London on a school trip, I stayed at home and finished my first music album that weekend. I make instrumental hip hop music in my spare time after school, and wanted to spend time on that when we had some time off from class.
My music can be categorized as instrumental jazz-hip hop. I buy vintage jazz vinyl, chop it up and try to make new grooves of it. I have a couple samplers from the 80s and 90s that makes it sound like I want, and I play electric piano, analogue synths and drums on top of the dusty samples. I did everything on the album myself, from making the music, getting in touch with guest artists, designing the cover-art, mixing and mastering, digital distribution, sending out press releases and taking interviews. Also I'm putting it out on wax in a couple months, so I've had to learn about the making of vinyl records as well (let me know if you want to buy a copy). In other words it's been a lot of work, and the making of this album has been my main focus (in addition to school) this year. But now it's all worth the effort, since High Rhodes LP turned out the way I had hoped. The album has gotten lots of positive feedback in the media, both in Norway and in the US, and I'm very proud of the finished product. The American magazine Okayplayer even compared me to my biggest idol, the beat making legend Jay Dee (RIP). I hope to be able to work with a combination of design and music in the future. I think that designing instruments, audio interfaces or album covers would be perfect. Either way it's been very educative to make this album, and I've learned a whole lot about how the music industry works, as well as developed my musical skills throughout the process. Listen to High Rhodes LP here: https://soundcloud.com/ol-burger-beats/sets/high-rhodes-lp http://open.spotify.com/album/2pEOAsotLXuRKHae27YzP4 https://itunes.apple.com/no/album/high-rhodes-lp/id933212654?l=nb https://wimp.no/wweb/album/36835041
Read some info on the album:Â www.okayplayer.com/news/ol-burger-beats-high-rhodes-lp-stream.html http://massappeal.com/premiere-ol-burger-beats-summer-madness/ http://www.kingsize.no/News.aspx?ArtNo=28651
This week's task was to create a web site by using html and css coding, showcasing our own work. I made a website for my music project, showing some of my hip hop beats. Check it out!