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2022-09-30 7:41 pm
for (byte gpio = Rled; gpio == Wled; gpio++) { pinMode(gpio, OUTPUT); }
Did you mean gpio<=Wled ?
Experience is what you get when you don't get what you want.
Topic starter
2022-09-30 8:25 pm
The problem is in Case: 3. the yoyo function. The video shows the problem when the yellow LED lights up.
The two stepper statements are are working in series. They need to run in parallel. Or I need to do it another way.
I have to rush off for an hour or so.
https://www.dropbox.com/s/uxjjrkzxiaejp55/Arduino%20YOUO%20project?dl=0
/* //Two 28BYJ48 stepper */ #include <AccelStepper.h> // ************** Constants ************* const int Rled = 14; const int Yled = 15; const int Gled = 16; const int Bled = 17; const int Wled = 18; // Define step constants #define FULLSTEP 4 #define HALFSTEP 8 // Define Motor Pins (2 Motors used) #define motorPin1 8 // Blue - 28BYJ48 pin 1 #define motorPin2 9 // Pink - 28BYJ48 pin 2 #define motorPin3 10 // Yellow - 28BYJ48 pin 3 #define motorPin4 11 // Orange - 28BYJ48 pin 4 #define motorPin5 4 // Blue - 28BYJ48 pin 1 #define motorPin6 5 // Pink - 28BYJ48 pin 2 #define motorPin7 6 // Yellow - 28BYJ48 pin 3 #define motorPin8 7 // Orange - 28BYJ48 pin 4 // Define two motor objects // The sequence 1-3-2-4 is required for proper sequencing of 28BYJ48 AccelStepper stepper1(FULLSTEP, motorPin1, motorPin3, motorPin2, motorPin4); AccelStepper stepper2(FULLSTEP, motorPin5, motorPin7, motorPin6, motorPin8); const long FullStepsPerRev = 2048*FULLSTEP; // ********** Variables ********** long stepsPerRev = 2048; int revCount = 0; // rotor revolutions unsigned long startTime = 0; //********* Setup *************** void setup() { // set pins 14, 15, 16, 17, 18 to output pins for (int i = 14; i < 19; i++) { pinMode (i,OUTPUT); } Serial.begin (9600); // 1 revolution Motor 1 stepper1.setMaxSpeed(1000.0); stepper1.setAcceleration(500.0); stepper1.setSpeed(500); stepper1.moveTo(2048); // 1 revolution Motor 2 stepper2.setMaxSpeed(1000.0); stepper2.setAcceleration(500.0); stepper2.setSpeed(200); stepper2.moveTo(-2048); } //****** functions **** void defaultSettings(){ // 1 revolution Motor 1 CW stepper1.setMaxSpeed(1000.0); stepper1.setAcceleration(500.0); stepper1.setSpeed(500); stepper1.moveTo(2048); // 1 revolution Motor 2 CCW stepper2.setMaxSpeed(1000.0); stepper2.setAcceleration(500.0); stepper2.setSpeed(500); stepper2.moveTo(-2048); } bool elapsedTime (unsigned long interval) { unsigned long currentTime = millis(); if (startTime = 0) {startTime = millis();} if (currentTime - startTime >= interval) { startTime = 0; return true;} else { startTime = currentTime; return false; } } //turn LED's off void alloff() { for (int i = 14; i < 19; i++){ digitalWrite (i,LOW); } } //turn LED's on void allon() { for (int i = 14; i < 19; i++){ digitalWrite (i,HIGH); } } void setStepper (float mxs,float acc,float spd,long mvt1,long mvt2, int seg) { // 1 revolution Motor 1 stepper1.setMaxSpeed(mxs); stepper1.setAcceleration(acc); stepper1.setSpeed(spd); stepper1.moveTo(mvt1/seg); // 1 revolution Motor 2 stepper2.setMaxSpeed(mxs); stepper2.setAcceleration(acc); stepper2.setSpeed(spd); stepper2.moveTo(mvt2/seg); } void newSpeed(int spd){ stepper1.setSpeed(spd); stepper2.setSpeed(spd); } void yoyo(int segment){ long target = FullStepsPerRev/segment; stepper1.setCurrentPosition(0); stepper2.setCurrentPosition(0); stepper1.moveTo(target); stepper2.moveTo(-target); stepper1.runToPosition(); stepper2.runToPosition(); } void roundAbout(int spd){ stepper1.moveTo(2048); stepper2.moveTo(-2048); stepper1.setSpeed(spd); stepper2.setSpeed(-spd); } // ************************* Main loop ******************** void loop() { int x = 0; int runCount = 0; switch (revCount) { case 2: // slow down alloff(); // mxs,acc,spd,mvt1,mvt2,seg setStepper (200.0, 500.0, 200.0, 2048, -2048, 1); digitalWrite (Rled,HIGH); break; case 3: // yoyo +1//8 to -1/8 from current position alloff(); digitalWrite (Yled,HIGH); yoyo(8); break; case 6: // same direction alloff(); digitalWrite (Gled,HIGH); //roundAbout(400); break; case 7: // default digitalWrite (Bled,HIGH); defaultSettings(); break; case 8: digitalWrite (Wled,HIGH); break; case 9: //re start cycle alloff(); revCount = 0; break; } x = revCount; while (x == revCount){ //Change direction at the limits if (stepper1.distanceToGo() == 0){ revCount++; stepper1.setCurrentPosition(0); stepper2.setCurrentPosition(0); stepper1.moveTo(-stepper1.currentPosition()); stepper2.moveTo(-stepper2.currentPosition()); stepper1.setCurrentPosition(0); stepper2.setCurrentPosition(0); } runCount++; stepper1.run(); stepper2.run(); } }
This post was modified 6 months ago by barrie
2022-09-30 8:39 pm
Your problem is that the runToPosition causes each stepper to complete that operation before moving on to do anything else. Change it to ...
void yoyo(int segment) { long target = FullStepsPerRev / segment; stepper1.setCurrentPosition(0); stepper2.setCurrentPosition(0); stepper1.moveTo(target); stepper2.moveTo(-target); while (stepper1.distanceToGo()>0) { stepper1.run(); stepper2.run(); } }
This will allow each stepper to step once inside the while loop and will appear to "share" the motion.
Experience is what you get when you don't get what you want.
Ron and ron bentley reacted
Topic starter
2022-09-30 9:45 pm
@will Thank you, that looked promising but there was no reaction. The steppers didn't blink and kept running.
By the way, did the video link work OK? Its my first use of the dropBox.
2022-09-30 9:49 pm
Maybe change >0 to !=0 ? Very curious.
Dropbox says that it can't preview items with no datatype, so you have to download the object and then guess at it's type, rename it and then play it.
Experience is what you get when you don't get what you want.
Topic starter
2022-09-30 9:51 pm
@inq Good advice, thanks. In your absence I posted a cleaned up version of my sketch along with a link to a video showing the latest problem.
2022-09-30 9:57 pm
The steppers didn't blink and kept running.
Blinking steppers ? What ?
What do you mean they "kept running", I thought you said the problem was that one or the other would stop ?
Experience is what you get when you don't get what you want.
Topic starter
2022-09-30 10:13 pm
@will Sorry. I assumed you had seen the video. I am fixing it. I will send another link so you will have a better perspective.
2022-09-30 10:16 pm
@barrie Try shooting the video in 640x480, NOT HighDef
Arduino says and I agree, in general, the const keyword is preferred for defining constants and should be used instead of #define
"Never wrestle with a pig....the pig loves it and you end up covered in mud..." anon
My experience hours are >75,000 and I stopped counting in 2004.
Major Languages - 360 Macro Assembler, Intel Assembler, PLI/1, Pascal, C plus numerous job control and scripting
2022-09-30 10:19 pm
So you're saying that replacing your entire module you with my entire module made no difference at all in execution ?
Did it not compile or reload properly ?
Experience is what you get when you don't get what you want.
Topic starter
2022-09-30 10:25 pm
@zander First time video on iPhone. Options are 4K or HD each each with 24 or 30 or 60 options. What is 4K 24?
2022-09-30 10:25 pm
Your problem is that the runToPosition causes each stepper to complete that operation before moving on to do anything else. Change it to ...
This example seems to be controlling two steppers simultaneously?
// Copyright (C) 2014 Mike McCauley #include <AccelStepper.h> #define STEPPER1_DIR_PIN 3 #define STEPPER1_STEP_PIN 2 #define STEPPER2_DIR_PIN 7 #define STEPPER2_STEP_PIN 6 AccelStepper stepper1(AccelStepper::DRIVER, STEPPER1_STEP_PIN, STEPPER1_DIR_PIN); AccelStepper stepper2(AccelStepper::DRIVER, STEPPER2_STEP_PIN, STEPPER2_DIR_PIN); void setup() { stepper1.setMaxSpeed(2000.0); stepper2.setAcceleration(200.0); stepper1.moveTo(100); stepper2.setMaxSpeed(1000.0); stepper2.setAcceleration(100.0); stepper2.moveTo(100); } void loop() { // change direction at limits if (stepper1.distanceToGo() == 0) stepper1.moveTo(-stepper1.currentPosition() ); if (stepper2.distanceToGo() == 0) stepper2.moveTo(-stepper2.currentPosition() ); stepper1.run(); stepper2.run(); }
2022-09-30 10:27 pm
@barrie 4K 24 is 4K resolution at 24frames per second (movie standard) You need to drop the 4K down to something a lot smaller, 1028 might fit in 10Meg but there is no need for a hollywood blockbuster, just a simple VGA 640x480 will suffice
You will probably have to run the raw video thru a downsizer.
Arduino says and I agree, in general, the const keyword is preferred for defining constants and should be used instead of #define
"Never wrestle with a pig....the pig loves it and you end up covered in mud..." anon
My experience hours are >75,000 and I stopped counting in 2004.
Major Languages - 360 Macro Assembler, Intel Assembler, PLI/1, Pascal, C plus numerous job control and scripting