It is evident that the OSC protocol can be conveniently implemented in MAX by downloading the Max externals. It is a content format for messaging among computers, sound synthesizers, and other multimedia devices which are optimized for modern networking technology.
Arduino max msp Patch#
The Max patch below shows the processing flow and sound generation.įinally, the patch can be “played” with a basic user interface.OSC is a protocol for communication among computers, sound synthesizers, and other multimedia devices that is optimized for modern networking technology.
Combining this signal with the line~ object makes smooth on/off transitions.
The cycle~ object generates a sine wave at the frequency received in its inlet. This note is high enough to attain a wide range, without making the device oversensitive to slight changes in the position of the knob. To expand the range of frequencies that the Max oscillator will be able to use, we scale the values received from the potentiometer. The values received from the potentiometer vary from 0 to 659 (experimentally). These are grouped in a list, which is translated into an ASCII symbol and converted to an integer. Thus, by selecting 32 in the incoming data stream, we can send groups of ASCII-encoded digits, corresponding to individual potentiometer values, to the next object.
Arduino max msp code#
The potentiometer values are separated by a space, ASCII code 32. To transmit meaningful data to an MSP object (an object that uses signals, that will be used here to generate sound), the data must first be formatted. The data received in Max is ASCII-encoded.
Arduino max msp serial#
The metro object sends a bang message to the serial object, which outputs the received data at the interval specified in metro (in ms). To receive data, the object must be polled at a certain time interval. The Baud rate specified must match that of the Arduino connection. Max uses the serial object to send and receive data serially. This will allow Max to control the rate at which it receives data from the Arduino. After each space is sent, the flag is lowered, and the Arduino again waits for Max to send data. This will be used in Max to determine the beginning and end of each string corresponding to individual values. It then sends the value of the potentiometer, followed by a space. A flag is raised when it has received data from Max. The Arduino waits for Max to initialise the connection. To send data from the Arduino to Max, we use a serial connection. The code reads the value from the resistor and stores it. Max then processes the data stream and produces sound.Ī three-pin potentiometer is connected to the Arduino in the usual way. The Arduino reads the values of the potentiometer and sends them serially to Max. A potentiometer connected to the Arduino is thus used to control the frequency of a virtual oscillator in Max/MSP. While the board is used for sensing input from the user, Max/MSP adds musicality to data by generating sound. This project aims to interface an Arduino board with the Max/MSP software. By combining ease of processing with the necessary interaction with the outside world, physical computing enables us to build instruments that respond to real-world input.