I am trying to get more than 6 analog inputs, into max from my Arduino Mega board (It has 16 , I want to use eight for now)

I have tried fiddling with both the sensorbox patches, with no luck

Do I need to change the arduino code maybe? (I took a look at it, but couldn´t figure out what needed to be changed if anything (to be honest my programming skills with the arduino are quite limited))

Anyone have any clue?

All the best

analogRead() and Serial.write().

Depending on the version of the Arduino IDE you use it may be

analogRead(A0); //for pin 0 and

Serial.print(foo, BYTE); //or
Serial,write(foo);

You simply need to add further read and write statements for the extra input pins; the Mega (and Arduino 1.0) use A0-A15 (or 0-15).

Maybe show us the Sensorbox Arduino sketch?

Brendan

If this idea receives any +1′s then I’ll certainly put a short toot together. Meanwhile, there’s some serial interfacing instructions on my blog

http://brendan-admi.blogspot.co.uk/

Brendan

Thanks for the reply

this is the SensorBox I am talking about

http://cycling74.com/toolbox/sensorbox/

Can´t seem to find (in the proccessing/arduino code) where I can specify more analog inputs.

mat

Besides writing a complete sketch and patch to access the extra analog inputs for you, the only thing I can suggest is you might try changing the local variable “g” range here:

//read analog pins
for (int g = 0;g<6;g++){
packValue(g);
}
char total = current+1;

Which is filling the array with analogValues from pins 0 -5

from g<6 to:

for (int g = 0; g<15; g++){

This MAY help address inputs 0-15 BUT it may well break the sketch too, and furthermore you’ll have to make changes to the Max patch to accommodate the extra input. Do so at your own risk, sorry I don’t have more time to solve this for ya. And I also hope Andrew doesn’t chip in to WAIL on me, for dispensing ignorance.

Brendan

ps
Anymore +1′s and I’ll post a short toot on accessing all analog inputs via a DIY Arduino sketch and Max patch. On my new ASUS n-series. And Max6. :p

//read all analog inputs on the Mega 2560;
//check inputs using Serial Monitor;
//then delete/paste some code to send output to MaxMSP

int touchVal;//sensor reading

void setup(){
Serial.begin(9600);
}

void loop(){
//n00bs array
for(int x=0; x<15; x++){
touchVal=analogRead(x);
//scale 0-1024 (10-bit) input to 0-c.200 (8-bit) output;
//depends entirely on the given circuit/current
touchVal/=5;
//////////////////////////////////////////////////////////
//replace all the following lines with those at the bottom
//when you are finished using Arduino serial monitor
//to check everything, and ready to send to Max:
Serial.print(x);//print “header” identifier, followed by…
Serial.print(” = “);
Serial.print(touchVal);//the sensor value
Serial.print(” “);//i forget how to print a tab
}
Serial.println();
delay(50);
}

/*
void loop(){
Serial.write(x);//print “header” identifier, followed by…
Serial.write(touchVal);//the sensor value
}
delay(50);
}
*/

In Max all you need is:

[metro 20]

[serial c 9600] (port identifier will obviously differ)

[zl group 2]

[route 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15]

Brendan

ps
rarely, I may have to send these messages to the serial object:

1. close
2. open port c

to get the stream to settle down, but only like once in 100 times.

Ill try what you suggest later on

I will also give you a +1 (the analog pins are the only thing I use on my arduino)

All the best

Haven’t got a decent soundcard yet for my brand spanking new rocket-ship ASUS, so apologies for the silent video.

http://brendan-admi.blogspot.co.uk/

https://www.youtube.com/user/ronnie9253?feature=mhee

Brendan