Using RX1 as an output (Arduino Pro Mini)

Forum 2005-2010 (read only) Hardware Interfacing
1

Hi i'de like to use the RX1 pin as an output on my board. I set it up via pinmode, but for some reason it doesn't seem to respond. I made a test program that did nothing but set it as an output and set it low, yet my multimeter still shows a fluctuating voltage. How can I use it as an output? (All of my other pins are used)

2

Post your code so we can see too.

Lefty

3

#define numWires 18
int wires[numWires]={18,19,1,4,3,2,7,6,5,16,9,8,13,15,14,11,10,12};

void setup() {
for(int i=0;i<numWires;i++){
pinMode(wires*,OUTPUT);*
_ digitalWrite(wires*, LOW);_
_}*_

}
void loop(){

}
Also, I think I may have posted this in the wrong section >_<

4

bamp >_<

5

Hi i'de like to use the RX1 pin as an output on my board.

If the RX1 pin is controlled via a serial uart type function, then it might be easier to use another approach to have more outputs. You probably need to check the chip specifications to see the RX1 setup.

6

Your code:

#define numWires 18
int wires[numWires]={18,19,1,4,3,2,7,6,5,16,9,8,13,15,14,11,10,12};

void setup()   {
for(int i=0;i<numWires;i++){
 pinMode(wires[i],OUTPUT); 
 digitalWrite(wires[i], LOW);
}


}
void loop(){

}

The RX1 pin is digital input pin 0 and you don't have that in your pin array list.

Try:

#define numWires [glow]19[/glow]
int wires[numWires]={18,19,[glow]0,[/glow]1,4,3,2,7,6,5,16,9,8,13,15,14,11,10,12}; 

[glow]// Also not using pin 17?
// If you do want to add pin 17 add it the the array list and make 
// numWires = 20[/glow]
void setup()   {
for(int i=0;i<numWires;i++){
 pinMode(wires[i],OUTPUT); 
 digitalWrite(wires[i], LOW);
}


}
void loop(){

}