Barn Door Tracker for Astrophotography

thingiverse

Materials 2 x ball bearing 608zz 1 x M8 screw 1 x M5 Threaded rod 5 x M5 nut 4 x M3 screw 4 x 3mm washer 1 x Nema 17 Motor For cheap motor option (28byj-48) : https://www.thingiverse.com/thing:2841827 1 x 1/4 nut 1 x 1/4 screw 1 x Arduino Uno 1 x Pololu A4988 1 x Wade Small gear Laser Mount: https://www.thingiverse.com/thing:3046560 Scope Remix: https://www.thingiverse.com/thing:2982009 Red Dot Mount: https://www.thingiverse.com/thing:3212065 Firmware whith extra functions and electronic box: https://www.thingiverse.com/thing:3113983 An additional piece to add a nut: https://www.thingiverse.com/thing:1853187 Remix for 28byj-48 stepper https://www.thingiverse.com/thing:2841827 Post-Printing Arduino Code #define DELAY 3997 //3997 = 1.09 vueltas por minuto en el engranaje grande int paso = 9; const int led = 13; int direccion = 8; int ledState = LOW; unsigned long previousMillis = 0; const long interval = 500; // the setup routine runs once when you press reset: void setup() { pinMode(paso, OUTPUT); pinMode(direccion, OUTPUT); pinMode(led, OUTPUT); } // the loop routine runs over and over again forever: void loop() { unsigned long currentMillis = millis(); if(currentMillis - previousMillis >= interval) { // save the last time you blinked the LED previousMillis = currentMillis; // if the LED is off turn it on and vice-versa: if (ledState == LOW) ledState = HIGH; else ledState = LOW; // set the LED with the ledState of the variable: digitalWrite(led, ledState); } digitalWrite(paso, LOW); digitalWrite(paso, HIGH); delayMicroseconds(DELAY); }