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@robot-orchestra
Play your Instrument from the Serial console in Arduino
This is a modified version of the code that can be easily controlled from the serial terminal in Arduino ( top right icon ).
Now you can play by sending "c" for the first note, "d" for the second, "e" for the 3rd notes. Feel free to change these characters to whatever you like ( 1,2,3,4,5,6,7,8 also works well ), just look for the case structure and change those :) if you feel confused, send us your questions :)
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Here is my idea for an instrument. This is still a rough idea and will probably have a few changes. My one fear was that the magnets on the nails would interfere with the magnetic strings but this is not an issue as the strings are not magnetic. Please leave me any suggestions. Thanks. robot-orchestra
Got my robot to play Mary had a little Lamb. Sounds awesome. robot-orchestra
The coolness, right here:
Hey everyone. Time to start writing your own tunes for your Percussion boards! First thing's first, you're going to need software generate and send music down to your Arduino. We're going to use a similar program to Arduino called Processing. What's the difference between these two programs? Arduino IDE is used to generate code that runs on your Arduino boards directly. Processing is used to generate programs that run on your computer. The Arduino programs are much leaner than Processing programs (in terms of what they can do), and you'll typically run into hardware constraints on the Arduino before Processing.
In a nutshell, we're going to use Processing to read a CSV text file (which you can create in Excel), then we're going to read the text file line-by-line with some Processing code and send the music down to the Arduino via USB. The Arduino is going to interpret each message received on USB to fire the solenoids. Sound simple enough? Lets get started.
Setup your Arduino with the Player code
Next, connect your Arduino to your computer and open the Arduino IDE.
Once you're in Arduino, click 'File->Save' and save the sketch as 'Robot_Orchestra_Instrument'.
Then copy and paste the code below into your Arduino sketch and save again.
Finally, upload the code to your Arduino and it's ready to roll!
Install Processing
Open your web browser and go to https://processing.org/download/?processing
Click on your operating system of choice to download (rather go with the 32-bit version), unpack the download, then run the Processing app.
Music Player in Processing
Download this Processing player here, unzip it and run 'RobotOrchestra_Player.pde'. This should open in Processing.
Then, in the same folder as the 'RobotOrchestra_Player.pde' file, you should find a folder called 'data'. Open this file to find your song called 'song.csv'. This is your Guitar-Hero-style song that you're going to modify to wrote your own music. Before we start writing anything lets test that everything works.
This is the tricky part. Depending on what other devices are plugged into your computer, your Arduino might show up on a different serial port. Usually it will show up on 'COM1' but this could be different.
Click the 'Run' button on the Processing IDE to see if COM1 works.
If everything is ok, you should see the 8 LEDs on your Percussion board start flickering. If it doesn't work, modify the code in your processing sketch to use COM2 instead COM1. You can keep trying different COM ports until this works, or you can send us a screenshot and we'll try help you out.
Write a tune!
If you've gotten this far, you're ready to start making some music! Open the 'song.csv' in Excel and you should see something like this:
This is your Guitar-Hero-Style music score :)
You can modify the music by changing the zero's and one's, and adding/removing extra rows. Just remember to keep your rows in multiples of 8 to make sure it sounds like actual music.
You can also adjust the speed that your music plays by adjusting the 'bpm' variable in your processing code.
Most music ranges between 70-165BPM, so experiment and see what you can come up with. If you run into any problems, don't hesitate to post your questions. Good luck and have fun!
Sound Activated drum Set
Some pretty lights for the drummers out there. This project uses an Arduino ( a slightly different looking one, but still and arduino) and some programmable LEDs to flash whenever a drum is hit.
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Unfortunately your Arduino can only provide around 10mA (10 milli-amperes) of current on each of the digital outputs. In order to energise your solenoids, you're going to need around 500mA! To solve this problem we're going to use an NPN transistor. You can think of a transistor as a current valve. You use a small amount of energy (in the form of current) to lift the gate which allows a much larger amount of current to flow! Magic!
So what if you wanted to drive a motor from your Arduino? Thats easy, you can use your loose transistor! If you're keen to try your hand at driving something a little bigger you can visit Mr Joubert's classroom and collect a diode and a resistor so you can build your own (just copy the diagram above). This circuit is essentially replicated 8 times on your Robot Orchestra shield. Just remember, you can only drive DC loads with your transistor (12V is best). Please DON'T connect this to an AC supply... or if you do, be sure to have someone filming it for YouTube :) There will certainly be smoke involved... the bad kind...
Busy rolling 80 solenoids for our Arduino musical robots robot-orchestra
Larson scanner code
This isn't the most elegant solution but it is easier to understand.
The elegant one might be a bit hard to follow... We will put it up later this week for those who are interested.
a simpler way of working with all the channels
If you found that all of the
pinMode(ONBOARD_LED_PIN,OUTPUT);
functions take too much space and you got tired of scrolling, Then you can have a look at this code to simplify your program :
robot-orchestra got it to work both ways
Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.
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This is a Larson scanner animation that you can do with the LEDs on the percussion board. It is best known for its award winning appearance as the eyes of the Cylons in Battlestar Galactica (1978 and 2004) and as the eyes of Kitt in Knight Rider ( 1982 ) featuring the one and only 'Hoff This is a 'Hello World' if you have enough LEDs
I had to find something to do with the new Arduino board, so I made the L LED blink my name in morse code: Ivan. Loving this Arduino board!
Its Cathlin from rrddam robotics i managed to get it go both ways.
Go Cathlin!! :D
An awesome example of a robotic xylophone
Here is the schematic for the percussion shield! See if you can figure out what's it does. Next week we'll show you how it works in more detail
Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.
Free to watch • No registration required • HD streaming
Pin numbers VS Channel numbers
Some of you might have noticed that the pin numbers in Arduino do not exactly match up with the channel numbers. ie, When you toggled pin 1 with
digitalWrite(1,HIGH); // turn it ON
nothing happened.
Paste this above the "setup()" then you may use the channel names instead of pin numbers.
// Lets name the pin numbers that the drivers are connected to #define DRIVER_PIN_CH_1 9 // Arduino Pin 9 #define DRIVER_PIN_CH_2 8 // Arduino Pin 8 #define DRIVER_PIN_CH_3 7 // Arduino Pin 7 #define DRIVER_PIN_CH_4 6 // Arduino Pin 6 #define DRIVER_PIN_CH_5 5 // Arduino Pin 5 #define DRIVER_PIN_CH_6 4 // Arduino Pin 4 #define DRIVER_PIN_CH_7 3 // Arduino Pin 3 #define DRIVER_PIN_CH_8 2 // Arduino Pin 2 #define ONBOARD_LED_PIN 13 // There is an onboard LED on pin 13
If you would like to toggle Channel 1 HIGH as it is labeled on the shield all you have to do is call
digitalWrite(DRIVER_PIN_CH_1,HIGH); // turn it ON
An Example sketch might look like this...
// Lets name the pin numbers that the drivers are connected to #define DRIVER_PIN_CH_1 9 // Arduino Pin 9 #define DRIVER_PIN_CH_2 8 // Arduino Pin 8 #define DRIVER_PIN_CH_3 7 // Arduino Pin 7 #define DRIVER_PIN_CH_4 6 // Arduino Pin 6 #define DRIVER_PIN_CH_5 5 // Arduino Pin 5 #define DRIVER_PIN_CH_6 4 // Arduino Pin 4 #define DRIVER_PIN_CH_7 3 // Arduino Pin 3 #define DRIVER_PIN_CH_8 2 // Arduino Pin 2 #define ONBOARD_LED_PIN 13 // There is an onboard LED on pin 13 void setup() { // put your setup code here, to run once: // set the pins to be outputs so they can drive things pinMode(DRIVER_PIN_CH_1,HIGH); pinMode(DRIVER_PIN_CH_2,HIGH); } void loop() { // put your main code here, to run repeatedly: // toggle two LEDs in an alternating pattern digitalWrite(DRIVER_PIN_CH_1,HIGH); delay(500); digitalWrite(DRIVER_PIN_CH_1,LOW); digitalWrite(DRIVER_PIN_CH_2,HIGH); delay(500); digitalWrite(DRIVER_PIN_CH_2,LOW); delay(500); }
Annotated Arduino, This should get you going with the IDE...
