I have built the circuit i have pictured below but i seem to be having trouble with the resistance readings from some of the pots . The all the pots are 10k. The top right section with to pots is a seperate module and that’s where my problem seems to be. they are in parallel so a get a base reading of 5k across the red and wiper and ramps smoothly down to 0 only if the 5V (red wire) is disconnected from the rest of the circuit. If i have the red wire is the ramps from zero up to about 3 and then starts ramping down again and end up at about 2.5 at what would be 5k. I have tried disconnecting each device that is connected to the 5v line to help find the problem but nothing stands out, the arduino moves it a few ohms but I’m kinda stuck, any insight would be greatly appreciated. I have a modified version of my main program i have been using for the Pot test but the problems are still there even if the arduino is powered down.
#include <Adafruit_DS3502.h>
Adafruit_DS3502 ds3502 = Adafruit_DS3502();
byte directionPin = 2; //New Stepper control
byte stepPin = 3;
byte stepstop = 4;
unsigned long curMillis;
unsigned long prevStepMillis = 0;
unsigned long millisBetweenStepsup = 1; // milliseconds
unsigned long millisBetweenStepsdown = 2; // milliseconds
int stepdelay =10; //testing
int clutchadvance =10; //testing
int brakespeed =5; //testing
#include "MultiMap.h" //Multimap
int mappedValue; //
int in[] = {0 , 31, 63, 95, 127}; //
int out[] = {0, 95, 115, 125, 127}; //
#define magnetDetected HIGH
#define noMagnet LOW
#define weAreTiming true
#define weAreNotTiming false
#define notfull false
#define full true
#define resetting true
#define tensioning false
#define brakeon true
#define brakeoff false
#define clutchon true
#define clutchoff false
const byte BRAKE_IN_PIN = A0;
const byte CLUTCH_IN_PIN =A3;
const byte PRESSURE = A1; // Pot on Analog Pin 1
const byte POTH = A2; // Pot on Analog Pin 2
bool timerRunningFlag = weAreNotTiming;
bool fullthrottle = notfull;
bool resetflag = tensioning;
bool brakeflag = brakeoff;
bool clutchflag = clutchoff;
const byte sensor = 6;
const byte heartbeatLED = 13;
int reset = 12;
byte lastWheelState = noMagnet;
int digitalPot ;
int brake_value = 0;
int clutch_value = 0;
int clutch_temp = 0;
int lowspeed = 0; // Low speed set
int highspeed = 0; // High Speed set
int lowrpm = 0; // Low RPM kick in
int highrpm = 0; // High RPM kick in
int highValue = 0;
int stepsLeft = 0;
int force = 0;
int stepmath = 0;
int tension = 0;
int stepstaken = 0;
int fullsqueeze = 0;
int totaltension =3000;
int lowValue = 800; //low speed setting
const int highLow = 600; //reading 0
const int highHigh = 200; //reading 1023
//timing stuff
unsigned long startTime;
unsigned long endTime;
unsigned long duration;
unsigned long timerMillis;
unsigned long heartbeatMillis;
unsigned long wheelMillis;
//*********************************************************************
void setup()
{
analogReference(A0);
ds3502.setWiper(0);
pinMode (sensor, INPUT_PULLUP);
pinMode (heartbeatLED, OUTPUT);
Serial.begin(115200);
while (!Serial)
{
delay(1);
}
Serial.println("Adafruit DS3502 Test");
if (!ds3502.begin()) // <-----<<<<<
{ // <-----<<<<<
Serial.println("Couldn't find DS3502 chip"); // <-----<<<<<
while (1); // <-----<<<<<
} // <-----<<<<<
Serial.println("Found DS3502 chip");
pinMode(reset, INPUT_PULLUP);
pinMode(directionPin, OUTPUT); //New stepper
pinMode(stepPin, OUTPUT);
pinMode(stepstop, OUTPUT);
fullthrottle = notfull;
}
//*********************************************************************
void loop()
{
digitalRead(reset);
while (digitalRead(reset) == LOW)
{
stepstaken = 0;
tension = 0;
digitalWrite(stepstop, HIGH);
digitalWrite(heartbeatLED, LOW);
if (resetflag == tensioning) {
Serial.println("reset");
resetflag = resetting;
}
digitalRead(reset);
}
brake_value = analogRead(BRAKE_IN_PIN);
clutch_value = analogRead(CLUTCH_IN_PIN);
highspeed = analogRead(POTH); //0 to 1023
highValue = map(highspeed, 0, 1000, highLow, highHigh);
lowValue = (highValue + 400);
force = analogRead(PRESSURE);
Serial.print("B: ");
Serial.print(brake_value);
Serial.print("C: ");
Serial.print(clutch_value);
Serial.print(" ");
Serial.print(lowValue);
Serial.print(" ");
Serial.print("Timer spread ");
Serial.print(highValue);
Serial.print (" Time in millis = ");
Serial.print (duration);
Serial.print(" ");
Serial.print(" Digital pot set to: ");
Serial.print(digitalPot);
Serial.print("\t");
Serial.print("Savage level: ");
Serial.print(force);
Serial.print(" ");
Serial.print(stepmath);
Serial.print(" -Stepmath Stepstaken- ");
Serial.print(stepstaken);
Serial.print(" Needed tension: ");
Serial.println(tension);
Serial.println("");
delay (1000) ;
}
