CEB Press Control Code v19.01

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Code

https://github.com/OpenSourceEcology/OSE_CEB_Press_v19.01

Notes

Real Cylinder Bounce Testing

Nonselection Procedure

  • We are using a four position switch for 1/4, 1/2, 3/4, and full bricks
  • Switch has positions 0-4 - or 5 total
  • The switch happens to have an off position (0) which does not make any connections
  • We can use the non-selection condition to do a fifth pseudo-selection - the reset procedure
  • Code for resetSelected (nonselection of all choices) is: if (quarterSelected() == false && halfSelected == false && threequarterSelected == false && fullSelected == false ) {}
  • Testing this:

//defines to make it easier for non-coders to make adjustments for troubleshooting and custom changes


  1. define SOLENOID_UP 4 //Extension. See pin mapping above.
  2. define SOLENOID_DOWN 5 //swap these pin numbers for wire inversion
  3. define SOLENOID_LEFT 6 //Extension.
  4. define SOLENOID_RIGHT 7 //swap these pin numbers for wire inversion
  1. define PRESSURE_SENSOR 13 //Needs pins adjacent so only 1 dupont connector is used
  2. define SELECTOR_RESET 12 //Activated when nothing is selected.
  3. define SELECTOR_QUARTER 11 //Reset is the shutdown/initialization procedure. All procedures are selected by
  4. define SELECTOR_HALF 10 //the WHILE function. QUARTER to FULL refers to brick thickness.
  5. define SELECTOR_THREEQUARTER 9 //Secondary cylinder timing is measured only.
  6. define SELECTOR_FULL 8 //Primary cylinder thickness setting is based on secondary cylinder motion.
  1. define PRESSURE_SENSOR_DEBOUNCE 20 //milliseconds to delay for pressure sensor debounce
  2. define DELAY 500 // 1/2 sec extra to compress brick via main Cyl (default 500ms)
                                       //custom function declarations

bool lowPressure(); //function to read pressure sensor bool resetSelected(); // //bool quarterSelected(); // bool halfSelected(); // bool threequarterSelected(); // bool fullSelected(); // 

                                       //Global variables

unsigned long drawerExtTime = 0; //Time measurement for calibrating motion. unsigned long previousMillis = 0; //time measurement for expansion

void setup() { 

 //initialize pin I/O Inputs and turn everything off to avoid startup glitches

 pinMode(PRESSURE_SENSOR, INPUT_PULLUP);
 pinMode(SELECTOR_HALF, INPUT_PULLUP);
 pinMode(SELECTOR_THREEQUARTER, INPUT_PULLUP);
 pinMode(SELECTOR_FULL, INPUT_PULLUP);
 pinMode(SOLENOID_RIGHT, OUTPUT);
 digitalWrite(SOLENOID_RIGHT, LOW);
 pinMode(SOLENOID_LEFT, OUTPUT);
 digitalWrite(SOLENOID_LEFT, LOW);
 pinMode(SOLENOID_DOWN, OUTPUT);
 digitalWrite(SOLENOID_DOWN, LOW);
 pinMode(SOLENOID_UP, OUTPUT);
 digitalWrite(SOLENOID_UP, LOW);
 Serial.begin(9600);

}

void loop() { 

        Serial.println(resetSelected());

while (resetSelected() == true) { //goes only up to trigger of pressure, no matter how long pressure trigger is 

   digitalWrite(SOLENOID_UP, HIGH);

} 

   digitalWrite(SOLENOID_UP, LOW);              //                     
   delay(2000);                                  //gives time to release trigger (momentary switch should be used to make this easier)
                                       //reads pressure sensor state HIGH is false and LOW is true

}

//End of Loop bool lowPressure() { //custom function definitions 

 if (digitalRead(PRESSURE_SENSOR) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(PRESSURE_SENSOR) == HIGH) {
     return true;
   }
   else {
     return false;
   }
 }
 else {
   return false;
 }}

 //reads selector  - HIGH is false, LOW is true- SELECTOR_RESET, SELECTOR_QUARTER, SELECTOR_HALF, SELECTOR_3QUARTERS, SELECTOR_FULL,
 bool resetSelected() {
   if (quarterSelected() == false && threequarterSelected() == false && halfSelected() == false && fullSelected() == false) {
     return true;
   }
   else {
     return false;
   }}

bool quarterSelected() { 

 if (digitalRead(SELECTOR_HALF) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(SELECTOR_HALF) == HIGH) {
     return false;
   }
   else {
     return true;
   }
 }
 else {
   return true;
 }}

 bool halfSelected() {
 if (digitalRead(SELECTOR_HALF) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(SELECTOR_HALF) == HIGH) {
     return false;
   }
   else {
     return true;
   }
 }
 else {
   return true;
 }}

 bool threequarterSelected() {
 if (digitalRead(SELECTOR_THREEQUARTER) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(SELECTOR_THREEQUARTER) == HIGH) {
     return false;
   }
   else {
     return true;
   }
 }
 else {
   return true;
 }}

   bool fullSelected() {
 if (digitalRead(SELECTOR_FULL) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(SELECTOR_FULL) == HIGH) {
     return false;
   }
   else {
     return true;
   }
 }
 else {
   return true;
 }}

Action Based on Selection of 2 Options

  • Same as above, but trigger an action by while (quarterSelected() == true && halfSelected == true) {}
  • This works.

while (fullSelected() == true && threequarterSelected() == true) { 

   digitalWrite(SOLENOID_UP, HIGH);

} 

   digitalWrite(SOLENOID_UP, LOW);              //

}

Cylinder Bounce Code Simulation

To test solenoids sensing pressure and reversing solenoids upon pressure trigger, ma nually simulated logic is the following. This simulates a cylinder bouncing between full retraction and full extension, which are both high pressure trigger points.

  • Turn solenoid UP on - while pressure low
  • Turn solenoid UP off - as soon as pressure triggers, and move solenoid Down.
  • Trigger is done manually simply by switching pin 13 on (touching jumper from ground to 13)
  • The opposite action occurs until the pressure is triggered again. Length of pressure trigger doesn't matter.
  • If the pressure trigger is longer that 2 seconds, then we don't know where in the program loop we are and either UP or DOWN will occur
  • In real life, the solenoid should be off momentarily, and next step should follow immediately

Code:

//defines to make it easier for non-coders to make adjustments for troubleshooting and custom changes

//defines to make it easier for non-coders to make adjustments for troubleshooting and custom changes

  1. define SOLENOID_UP 4 //Extension. See pin mapping above.
  2. define SOLENOID_DOWN 5 //swap these pin numbers for wire inversion
  3. define SOLENOID_LEFT 6 //Extension.
  4. define SOLENOID_RIGHT 7 //swap these pin numbers for wire inversion
  1. define PRESSURE_SENSOR 13 //Needs pins adjacent so only 1 dupont connector is used
  2. define SELECTOR_RESET 12 //Activated when nothing is selected.
  3. define SELECTOR_QUARTER 11 //Reset is the shutdown/initialization procedure. All procedures are selected by
  4. define SELECTOR_HALF 10 //the WHILE function. QUARTER to FULL refers to brick thickness.
  5. define SELECTOR_THREEQUARTER 9 //Secondary cylinder timing is measured only.
  6. define SELECTOR_FULL 8 //Primary cylinder thickness setting is based on secondary cylinder motion.
  1. define PRESSURE_SENSOR_DEBOUNCE 20 //milliseconds to delay for pressure sensor debounce
  2. define DELAY 500 // 1/2 sec extra to compress brick via main Cyl (default 500ms)
                                       //custom function declarations

bool lowPressure(); //function to read pressure sensor bool resetSelected(); // //bool quarterSelected(); // bool halfSelected(); // bool threequarterSelected(); // bool fullSelected(); // 

                                       //Global variables

unsigned long drawerExtTime = 0; //Time measurement for calibrating motion. unsigned long previousMillis = 0; //time measurement for expansion

void setup() { 

 //initialize pin I/O Inputs and turn everything off to avoid startup glitches

 pinMode(PRESSURE_SENSOR, INPUT_PULLUP);
 pinMode(SELECTOR_HALF, INPUT_PULLUP);
 pinMode(SELECTOR_THREEQUARTER, INPUT_PULLUP);
 pinMode(SELECTOR_FULL, INPUT_PULLUP);
 pinMode(SOLENOID_RIGHT, OUTPUT);
 digitalWrite(SOLENOID_RIGHT, LOW);
 pinMode(SOLENOID_LEFT, OUTPUT);
 digitalWrite(SOLENOID_LEFT, LOW);
 pinMode(SOLENOID_DOWN, OUTPUT);
 digitalWrite(SOLENOID_DOWN, LOW);
 pinMode(SOLENOID_UP, OUTPUT);
 digitalWrite(SOLENOID_UP, LOW);

}

void loop() {


while (lowPressure() == true) { //goes only up to trigger of pressure, no matter how long pressure trigger is 

   digitalWrite(SOLENOID_UP, HIGH);

} 

   digitalWrite(SOLENOID_UP, LOW);              //                     
   delay(2000);                                  //gives time to release trigger (momentary switch should be used to make this easier)

while (lowPressure() == true) { //moves in reverse direction until next trigger 

   digitalWrite(SOLENOID_DOWN, HIGH);

} 

   digitalWrite(SOLENOID_DOWN, LOW);            //moves on to next step, next step should continue until next trigger                      
   delay(2000);

} //reads pressure sensor state HIGH is false and LOW is true 

                                                //End of Loop

bool lowPressure() { //custom function definitions 

 if (digitalRead(PRESSURE_SENSOR) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(PRESSURE_SENSOR) == HIGH) {
     return true;
   }
   else {
     return false;
   }
 }
 else {
   return false;
 }}

 //reads selector  - HIGH is false, LOW is true- SELECTOR_RESET, SELECTOR_QUARTER, SELECTOR_HALF, SELECTOR_3QUARTERS, SELECTOR_FULL,
 bool resetSelected() {
   if (threequarterSelected() == false && halfSelected() == false && fullSelected() == false) {
     return true;
   }
   else {
     return false;
   }}

 bool halfSelected() {
 if (digitalRead(SELECTOR_HALF) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(SELECTOR_HALF) == HIGH) {
     return false;
   }
   else {
     return true;
   }
 }
 else {
   return true;
 }}

 bool threequarterSelected() {
 if (digitalRead(SELECTOR_THREEQUARTER) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(SELECTOR_THREEQUARTER) == HIGH) {
     return false;
   }
   else {
     return true;
   }
 }
 else {
   return true;
 }}

   bool fullSelected() {
 if (digitalRead(SELECTOR_FULL) == HIGH) {
   delay(PRESSURE_SENSOR_DEBOUNCE);
   if (digitalRead(SELECTOR_FULL) == HIGH) {
     return false;
   }
   else {
     return true;
   }
 }
 else {
   return true;
 }}
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