Mechanical counter

thingiverse

This is a straightforward, simple three-digit mechanical counter to build. Check out my YouTube channel: https://www.youtube.com/channel/UCMgnEbAWquCmUA6PmnraRFQ/featured Other things you will need are: -28BYJ-48 stepper Motor -10(1/8x3/4 machine screws) and two nuts -3/16 steel rod - 2 1/4 -3/16 steel rod - 2 3/4 Note: There are two different number wheels, two of them have pegs and one doesn't. Make sure that the two plates are installed correctly. Assembly video: https://youtu.be/YPiHM70R6K8 Follow this video for instructions. Watch the coding video: https://youtu.be/qc8h17euKeE Example Arduino code: //#include <Stepper.h> // make this line so it's not a comment (sorry about this) Stepper myStepper = Stepper(2048, 5, 6,7,8); //First number is the steps for one rotation, next four are what the motor is connected to int curNum =0; int newNum = 0; void setup() { // put your setup code here, to run once: } void loop() { // put your main code here, to run repeatedly: //add your main code here. Your code must change the newNum variable to change the number displayed by the mechanical counter newNum = constrain(newNum,0,999);//constrain the numbers between 0-999 (what the counter can display) myStepper.setSpeed(15); if (curNum < newNum){ myStepper.step(204/1); curNum ++; delay(50); for(int i=0;i<1000;i=i+10){ if(curNum==(i)){ myStepper.step(8); } } } if (curNum > newNum){ myStepper.step(-204/1); curNum --; delay(50); for(int i=0;i<1000;i=i+10){ if(curNum==(i)){ myStepper.step(-8); } } }