DS Touchpad woes

Forum 2005-2010 (read only) Hardware Interfacing
1

I think I may have ended up with faulty nintendo DS touchpad, but I just want to check it's not me before I complain to the company.

Here is my wiring of the breakout board:

Connected to analog pins A0-A3, using this code:

// Taken from http://kousaku-kousaku.blogspot.com/2008/08/arduino_24.html

#define xLow  A0
#define xHigh A2
#define yLow  A3
#define yHigh A1
/*
//modified to match my sparkfun connector
#define xLow  A0
#define xHigh A2
#define yLow  A3
#define yHigh A1
 */
 
void setup(){
  Serial.begin(9600);
}
 
void loop(){
  pinMode(xLow,OUTPUT);
  pinMode(xHigh,OUTPUT);
  digitalWrite(xLow,LOW);
  digitalWrite(xHigh,HIGH);
 
  digitalWrite(yLow,LOW);
  digitalWrite(yHigh,LOW);
 
  pinMode(yLow,INPUT);
  pinMode(yHigh,INPUT);
  delay(10);
 
  //xLow has analog port -14 !!
  int x=analogRead(yLow);
 
  pinMode(yLow,OUTPUT);
  pinMode(yHigh,OUTPUT);
  digitalWrite(yLow,LOW);
  digitalWrite(yHigh,HIGH);
 
  digitalWrite(xLow,LOW);
  digitalWrite(xHigh,LOW);
 
  pinMode(xLow,INPUT);
  pinMode(xHigh,INPUT);
  delay(10);
 
  //xLow has analog port -14 !!
  int y=analogRead(xLow);
 
    Serial.print(x,DEC);   
    Serial.print(",");     
    Serial.println(y,DEC); 
 
  delay(200);
}

Can anyone see if anything is wrong before I email the store?

2
  1. Verify you have the correct side of the ribbon "up" in the adapter.
  2. Some people mentioned that the adapter expects a slightly thicker ribbon surface, so you may need to add thickness behind the non-conductive side to make good contacts.