SplinterOz said:
kiwifiat said:
Arlo1 said:
Arlo1 said:marcexec said:Will you fix the windsceen for the trip?
(obviously just the jealousy talking here)
Working on that now.
Here in BC we are allowed to insure windshields and because of this any standard windshield costs $525 installed If I go to Alberta where you are not allowed to insure a windshield its ~$200 installed.
I am trying to find a place to order one and do it my self or someone who isn't corrupt from ICBC
Gordo said:
Arlo1 said:Gordo said:
Yes he is coming Friday to my shop I got a-hold of him and he used to OWN a CRX and is stoked to check out what I have done. I plan to take him out for a rip
Its 325 all said and done with Tax and the molding. That's a realistic price. Another guy offered to let me buy it for 195 all in and I do it my self. But I will pay 325 for Clint to come to my shop and do it.
Plus he will be in the market for an electric when I am done with him
Gordo said:
kiwifiat said:
#include <Nextion.h>
#include <SoftwareSerial.h>
// Tempreture constants
// Motor Temp ???
#define THERMISTORPIN A3 // which analog pin to connect
#define THERMISTORNOMINAL 15000 // resistance at 25 degrees C
#define TEMPERATURENOMINAL 25 // temp. for nominal resistance (almost always 25 C)
#define BCOEFFICIENT 3950 // The beta coefficient of the thermistor (usually 3000-4000)
#define SERIESRESISTOR 9950 // the value of the 'other' resistor
// Controller Temp
#define THERMISTORPIN2 A4 // anlog pin for controller temp
#define THERMISTORNOMINAL2 10000 // resisatance at 25 deg C for controller
#define TEMPERATURENOMINAL2 25 // temp. for second therminstor resistance
#define BCOEFFICIENT2 3950 // Teh bete coefficient for therminstor 2
#define SERIESRESISTOR2 9950 // the value for the second other resistor
// Pin constants
#define PACKVOLTPIN A0 // pack voltage sensor
#define PREVOLTPIN A1 // system voltage sensor
#define SYSVOLTPIN A2 // precharge voltage sensor
#define AMPPIN A5 // current sensor
#define SPEEDPIN 2 // The pin the encoder is connected
#define CONTACTORPIN 12 // control the contactor
// Vehicle Constants
//Battery
#define HIGHVOLT 480 // Maximum pack voltage
#define LOWVOLT 340 // minimum pack voltage
#define PRECHARGEPERCENT 0.95 // precharge complete percentage
//Speed
#define PULSEPERROT 4.8 // pulses per rotation of speed sensor
#define WHEELCIRC .1835 // circumference of wheel in meters
// Smoothing Constants // filter co-efficient valid range 0 -> 1 0 = infinite filtering 1 = no filtering
#define FILTER_BATTERY 0.1
#define FILTER_SPEED 0.4
#define FILTER_TEMP 0.1
// display variables
SoftwareSerial nextion(10, 11); // Nextion TX to pin 2 and RX to pin 3 of Arduino
Nextion myNextion(nextion, 9600); //create a Nextion object named myNextion using the nextion serial port @ 9600bps
// Interrupt variables
volatile byte pulses = 0;
// normal variables
int kmh = 0; // speed reading
float PrechargeVolt=0, SystemVolt=0, BatteryAmp=0, PackVolt=0, tempMotor=0, tempController=0, KW=0;
unsigned long timeold;
unsigned long millisecsPerHour = 3600000;
/*
* Setup function...
* start serial devices and dash
* set pinmodes
* attach interrupts
* set start timer
*/
void setup() {
Serial.begin(9600); // initialize serial communication at 9600 bits per second:
myNextion.init();
pinMode(CONTACTORPIN, OUTPUT); //
digitalWrite(CONTACTORPIN, LOW); //Makes contactor outout LOW initially (zero)
//Use statusPin to flash along with interrupts
pinMode(SPEEDPIN, INPUT_PULLUP); // using INPUT_PULLUP means no need for a external pullup resisitor.
//Interrupt 0 is digital pin 2, so that is where the IR detector is connected
attachInterrupt(0, irspeed, FALLING); // change to falling as standard state is high
timeold = millis();
}
/*
* Interrupt handling
*/
void irspeed()
{
//Update count
pulses++;
}
/*
* Main loop really simple and easy to follow
*/
void loop()
{
readVehicle();
updateDash();
}
/*
* Get the values from all the sensors and calculate the "real" values
*/
void readVehicle(void)
{
int calc = 0;
// Read battery information
PackVolt = (analogRead(PACKVOLTPIN)/2.048); //Outputs values from 0-1023, so 2.048 will make the maximum voltage 500V. Set appropriate voltage divider!
PrechargeVolt = (analogRead(PREVOLTPIN)/2.048); //Outputs values from 0-1023, so 2.048 will make the maximum voltage 500V. Set appropriate voltage divider!
SystemVolt = (analogRead(SYSVOLTPIN)/47.34); //Outputs values from 0-1023 so 63.94 is 16v with a 5v input
BatteryAmp = BatteryAmp + FILTER_BATTERY*((analogRead(AMPPIN)*1.710655-890) - BatteryAmp); // Bidirectional current sensor 2.5v at middle
KW = (BatteryAmp*PrechargeVolt/1000);
// Enable the contactor if the pack and precharge are ok
if (PackVolt > LOWVOLT && PackVolt < HIGHVOLT // pack voltage within correct parameters
&& PackVolt * PRECHARGEPERCENT <= PrechargeVolt) // 95% precharge, change 0.95 to whatever to get you want your precharge to be
{
digitalWrite(CONTACTORPIN, HIGH);
}
// calculate speed
if (millis() - timeold >= 100)
{
detachInterrupt(0);
kmh = (WHEELCIRC / 1000 * (pulses/PULSEPERROT)) * millisecsPerHour / (millis() - timeold); // raw calculation
kmh = kmh + FILTER_SPEED*(calc -kmh); // filtered speed
timeold = millis();
pulses = 0;
attachInterrupt(0, irspeed, FALLING);
}
// read and calculate tempretures
tempMotor = tempMotor + FILTER_TEMP * (readThermistor(THERMISTORPIN, THERMISTORNOMINAL, TEMPERATURENOMINAL,
BCOEFFICIENT, SERIESRESISTOR) - tempMotor); // filtered read
tempController = tempController + FILTER_TEMP * (readThermistor(THERMISTORPIN2, THERMISTORNOMINAL2,TEMPERATURENOMINAL2,
BCOEFFICIENT2, SERIESRESISTOR2) - tempController); // filtered read
//Write it out to serial port
Serial.print("Speed: ");
Serial.println(kmh, DEC);
Serial.print("Temperature 1 ");
Serial.print(tempMotor);
Serial.println(" *C");
Serial.print("Temperature 2 ");
Serial.print(tempController);
Serial.println(" *C");
}
/*
* Update the display with all the values
* ALL logic around display including calculations are here
*/
void updateDash(void)
{
int displayKMH, displayAMPS;
displayKMH = kmh*1.25;
if(displayKMH<60) displayKMH += 300 ;
else displayKMH -= 60; // get the needle to start at 0 which is 300 deg in nextion
displayAMPS = (BatteryAmp+100)/2.8676470;
if(displayAMPS<66) displayAMPS = 295 + displayAMPS;
else displayAMPS = displayAMPS - 66;
myNextion.setComponentValue("n4", tempMotor);
myNextion.setComponentText("t12", String(PrechargeVolt)); // update text using original sensor value
myNextion.setComponentValue("z2", displayKMH);
myNextion.setComponentText("t13", String(SystemVolt)); //12v battery gauge
myNextion.setComponentValue("n0", BatteryAmp);
myNextion.setComponentValue("n1", kmh);
myNextion.setComponentValue("n5", tempController);
myNextion.setComponentValue("n6", KW);
myNextion.setComponentValue("z1", displayAMPS);
}
/*
* Utility function to get the tempreture in degrees C from the thermister
*/
float readThermistor(int thermPin, int nomResistance, int nomTemp, int seriesRes, int bCoefficient)
{
float reading = 0;
reading = analogRead(thermPin);
// convert the value to resistance
reading = 1023 / reading - 1;
reading = seriesRes / reading;
float steinhart;
steinhart = reading / nomResistance; // (R/Ro)
steinhart = log(steinhart); // ln(R/Ro)
steinhart /= bCoefficient; // 1/B * ln(R/Ro)
steinhart += 1.0 / (nomTemp + 273.15); // + (1/To)
steinhart = 1.0 / steinhart; // Invert
steinhart -= 273.15; // convert to C
return steinhart;
}Arlo1 said:
Arlo1 said:
SplinterOz said:
Arlo1 said:
// calculate speed
if (millis() - timeold >= 100)
{
detachInterrupt(0);
kmh = (WHEELCIRC / 1000 * (pulses/PULSEPERROT)) * millisecsPerHour / (millis() - timeold); // raw calculation
--> kmh = kmh + FILTER_SPEED*(calc -kmh); // filtered speed
timeold = millis();
pulses = 0;
attachInterrupt(0, irspeed, FALLING);
}
Gordo said:Arlin took me for a ride today and my back is still a little tender. When he punches the throttle, it pushes you so hard in the seat if feels like someone just rear-ended you and you can feel every bone in your spine.
Ok thankskiwifiat said:
#include <Nextion.h>
#include <SoftwareSerial.h>
// Tempreture constants
// Motor Temp ???
#define THERMISTORPIN A3 // which analog pin to connect
#define THERMISTORNOMINAL 15000 // resistance at 25 degrees C
#define TEMPERATURENOMINAL 25 // temp. for nominal resistance (almost always 25 C)
#define BCOEFFICIENT 6850 // The beta coefficient of the thermistor (usually 3000-4000)
#define SERIESRESISTOR 10000 // the value of the 'other' resistor
// Controller Temp
#define THERMISTORPIN2 A4 // anlog pin for controller temp
#define THERMISTORNOMINAL2 10000 // resisatance at 25 deg C for controller
#define TEMPERATURENOMINAL2 25 // temp. for second therminstor resistance
#define BCOEFFICIENT2 9550 // Teh bete coefficient for therminstor 2
#define SERIESRESISTOR2 10000 // the value for the second other resistor
// Pin constants
#define PACKVOLTPIN A0 // pack voltage sensor
#define PREVOLTPIN A1 // system voltage sensor
#define SYSVOLTPIN A2 // precharge voltage sensor
#define AMPPIN A5 // current sensor
#define SPEEDPIN 2 // The pin the encoder is connected
#define CONTACTORPIN 12 // control the contactor
// Vehicle Constants
//Battery
#define HIGHVOLT 480 // Maximum pack voltage
#define LOWVOLT 340 // minimum pack voltage
#define PRECHARGEPERCENT 0.95 // precharge complete percentage
//Speed
#define PULSEPERROT 4.8 // pulses per rotation of speed sensor
#define WHEELCIRC .1835 // circumference of wheel in meters
// Smoothing Constants // filter co-efficient valid range 0 -> 1 0 = infinite filtering 1 = no filtering
#define FILTER_BATTERY 0.8
#define FILTER_SPEED .0
#define FILTER_TEMP 0.7
// display variables
SoftwareSerial nextion(10, 11); // Nextion TX to pin 2 and RX to pin 3 of Arduino
Nextion myNextion(nextion, 9600); //create a Nextion object named myNextion using the nextion serial port @ 9600bps
// Interrupt variables
volatile byte pulses = 0;
// normal variables
int kmh = 0; // speed reading
float PrechargeVolt=0, SystemVolt=0, BatteryAmp=0, PackVolt=0, tempMotor=0, tempController=0, KW=0;
unsigned long timeold;
unsigned long millisecsPerHour = 3600000;
/*
* Setup function...
* start serial devices and dash
* set pinmodes
* attach interrupts
* set start timer
*/
void setup() {
Serial.begin(9600); // initialize serial communication at 9600 bits per second:
myNextion.init();
pinMode(CONTACTORPIN, OUTPUT); //
digitalWrite(CONTACTORPIN, LOW); //Makes contactor outout LOW initially (zero)
//Use statusPin to flash along with interrupts
pinMode(SPEEDPIN, INPUT_PULLUP); // using INPUT_PULLUP means no need for a external pullup resisitor.
//Interrupt 0 is digital pin 2, so that is where the IR detector is connected
attachInterrupt(0, irspeed, FALLING); // change to falling as standard state is high
timeold = millis();
}
/*
* Interrupt handling
*/
void irspeed()
{
//Update count
pulses++;
}
/*
* Main loop really simple and easy to follow
*/
void loop()
{
readVehicle();
updateDash();
}
/*
* Get the values from all the sensors and calculate the "real" values
*/
void readVehicle(void)
{
int calc = 0;
// Read battery information
PackVolt = (analogRead(PACKVOLTPIN)/2.048); //Outputs values from 0-1023, so 2.048 will make the maximum voltage 500V. Set appropriate voltage divider!
PrechargeVolt = (analogRead(PREVOLTPIN)/2.048); //Outputs values from 0-1023, so 2.048 will make the maximum voltage 500V. Set appropriate voltage divider!
SystemVolt = (analogRead(SYSVOLTPIN)/47.34); //Outputs values from 0-1023 so 63.94 is 16v with a 5v input
BatteryAmp = BatteryAmp + FILTER_BATTERY*((analogRead(AMPPIN)*1.710655-890) - BatteryAmp); // Bidirectional current sensor 2.5v at middle
KW = (BatteryAmp*PrechargeVolt/1000);
// Enable the contactor if the pack and precharge are ok
if (PackVolt > LOWVOLT && PackVolt < HIGHVOLT // pack voltage within correct parameters
&& PackVolt * PRECHARGEPERCENT <= PrechargeVolt) // 95% precharge, change 0.95 to whatever to get you want your precharge to be
{
digitalWrite(CONTACTORPIN, HIGH);
}
// calculate speed
if (millis() - timeold >= 100)
{
detachInterrupt(0);
kmh = (WHEELCIRC / 1000 * (pulses/PULSEPERROT)) * millisecsPerHour / (millis() - timeold); // raw calculation
kmh = kmh + FILTER_SPEED*(calc -kmh); // filtered speed
timeold = millis();
pulses = 0;
attachInterrupt(0, irspeed, FALLING);
}
// read and calculate tempretures
tempMotor = tempMotor + FILTER_TEMP * (readThermistor(THERMISTORPIN, THERMISTORNOMINAL, TEMPERATURENOMINAL,
BCOEFFICIENT, SERIESRESISTOR) - tempMotor); // filtered read
tempController = tempController + FILTER_TEMP * (readThermistor(THERMISTORPIN2, THERMISTORNOMINAL2,TEMPERATURENOMINAL2,
BCOEFFICIENT2, SERIESRESISTOR2) - tempController); // filtered read
//Write it out to serial port
Serial.print("Speed: ");
Serial.println(kmh, DEC);
Serial.print("Temperature 1 ");
Serial.print(tempMotor);
Serial.println(" *C");
Serial.print("Temperature 2 ");
Serial.print(tempController);
Serial.println(" *C");
}
/*
* Update the display with all the values
* ALL logic around display including calculations are here
*/
void updateDash(void)
{
int displayKMH, displayAMPS;
displayKMH = kmh*1.25;
if(displayKMH<60) displayKMH += 300 ;
else displayKMH -= 60; // get the needle to start at 0 which is 300 deg in nextion
displayAMPS = (BatteryAmp+100)/2.8676470;
if(displayAMPS<66) displayAMPS = 295 + displayAMPS;
else displayAMPS = displayAMPS - 66;
myNextion.setComponentValue("n4", tempMotor);
myNextion.setComponentText("t12", String(PrechargeVolt)); // update text using original sensor value
myNextion.setComponentValue("z2", displayKMH);
myNextion.setComponentText("t13", String(SystemVolt)); //12v battery gauge
myNextion.setComponentValue("n0", BatteryAmp);
myNextion.setComponentValue("n1", kmh);
myNextion.setComponentValue("n5", tempController);
myNextion.setComponentValue("n6", KW);
myNextion.setComponentValue("z1", displayAMPS);
}
/*
* Utility function to get the tempreture in degrees C from the thermister
*/
float readThermistor(int thermPin, int nomResistance, int nomTemp, int seriesRes, int bCoefficient)
{
float reading = 0;
reading = analogRead(thermPin);
// convert the value to resistance
reading = 1023 / reading - 1;
reading = seriesRes / reading;
float steinhart;
steinhart = reading / nomResistance; // (R/Ro)
steinhart = log(steinhart); // ln(R/Ro)
steinhart /= bCoefficient; // 1/B * ln(R/Ro)
steinhart += 1.0 / (nomTemp + 273.15); // + (1/To)
steinhart = 1.0 / steinhart; // Invert
steinhart -= 273.15; // convert to C
return steinhart;
}Arlo1 said:
kiwifiat said:
Lebowski said:
Arlo1 said:
Before I had this filter is was not perfect. Watch the $100 videokiwifiat said:
//Gauges for electric crx
#include <SoftwareSerial.h>
#include <Nextion.h>
SoftwareSerial nextion(10, 11);// Nextion TX to pin 2 and RX to pin 3 of Arduino
int speedSensorpin = 2; // The pin the encoder is connected
unsigned int kmh; // speed reading
volatile uint16_t pulses; // number of pulses
unsigned long timeold;
unsigned int pulsePerRotation = 1;
// which analog pin to connect
#define THERMISTORPIN A3
// resistance at 25 degrees C
#define THERMISTORNOMINAL 15000
// temp. for nominal resistance (almost always 25 C)
#define TEMPERATURENOMINAL 25
// how many samples to take and average, more takes longer
// but is more 'smooth'
#define NUMSAMPLES 5
// The beta coefficient of the thermistor (usually 3000-4000)
#define BCOEFFICIENT 3950
// the value of the 'other' resistor
#define SERIESRESISTOR 9950
// speed calculation
int samples[NUMSAMPLES];
Nextion myNextion(nextion, 9600); //create a Nextion object named myNextion using the nextion serial port @ 9600bps
int old_sensor_value = 0;
void irspeed()
{
//Update count
pulses++;
}
void setup() {
Serial.begin(9600); // initialize serial communication at 9600 bits per second:
myNextion.init();
pinMode(12, OUTPUT);//
digitalWrite(1, LOW);//Makes contactor outout LOW initially (zero)
int contactorstatus = 000;
//Use statusPin to flash along with interrupts
pinMode(speedSensorpin, INPUT);
//Interrupt 0 is digital pin 2, so that is where the IR detector is connected
//Triggers on FALLING (change from HIGH to LOW)
attachInterrupt(0, irspeed, FALLING);
// Initialize
pulses = 0;
kmh = 0;
timeold = 0;
}
void loop()
{
// read the input on analog pin 0:
float Packvolt = (analogRead(A0)/2.048);//Outputs values from 0-1023, so 2.048 will make the maximum voltage 500V. Set appropriate voltage divider!
float Prechargevolt = (analogRead(A1)/2.048);//
float Systemvolt = (analogRead(A2)/47.34);//Outputs values from 0-1023 so 63.94 is 16v with a 5v input
float BatteryAmp = (analogRead(A3)*1.85-511.5);// Bidirectional current sensor 2.5v at middle
int contactorstatus = 000;
int value = Prechargevolt;
int (speed[0]);
if (Packvolt>340&&Packvolt<480&&Packvolt*0.965<=Prechargevolt)// 95% precharge, change 0.95 to whatever to get you want your precharge to be
{
digitalWrite(12, HIGH);
int contactorstatus = 111;
}
{
if (pulses >= 2) {
if (millis() - timeold >= 100){ //Uptade every one tenth second
kmh = (6607.1234 / pulsePerRotation)/ (millis() - timeold)* pulses; // This should give a speed with a 23 inch od wheel
timeold = millis();
pulses = 0;
}
//Write it out to serial port
//Serial.print("RPM = ");
Serial.println(kmh,DEC);
}
}
{
uint8_t i;
float average;
// take N samples in a row, with a slight delay
for (i=0; i< NUMSAMPLES; i++) {
samples[i] = analogRead(THERMISTORPIN);
delay(10);
}
// average all the samples out
average = 0;
for (i=0; i< NUMSAMPLES; i++) {
average += samples[i];
}
average /= NUMSAMPLES;
Serial.print("Average analog reading ");
Serial.println(average);
// convert the value to resistance
average = 1023 / average - 1;
average = SERIESRESISTOR / average;
Serial.print("Thermistor resistance ");
Serial.println(average);
float steinhart;
steinhart = average / THERMISTORNOMINAL; // (R/Ro)
steinhart = log(steinhart); // ln(R/Ro)
steinhart /= BCOEFFICIENT; // 1/B * ln(R/Ro)
steinhart += 1.0 / (TEMPERATURENOMINAL + 273.15); // + (1/To)
steinhart = 1.0 / steinhart; // Invert
steinhart -= 273.15; // convert to C
Serial.print("Temperature ");
Serial.print(steinhart);
Serial.println(" *C");
myNextion.setComponentValue("n4", steinhart);
}
{
myNextion.setComponentText("t12", String(Prechargevolt)); // update text using original sensor value
myNextion.setComponentValue("z2", speed);
myNextion.setComponentText("t13", String(Systemvolt)); //12v battery gauge
myNextion.setComponentValue("n0", BatteryAmp);
myNextion.setComponentValue("n1", kmh);
delay(100); // delay in between reads for stability
}
}
void magnet_detect()//This function is called whenever a magnet/interrupt is detected by the arduino
{
pulses++;
Serial.println("detect");
}Arlo1 said:
kiwifiat said:
Then I asked for help when I found that was not good enough. 