INTRODUCTION This is version 2.0 of our DIYbio orbital shaker. We'll be adding in more info, videos, and assembly instructions in the near future. All the electronics are the same as the original version. So is all the Arduino code. The electronics diagram is included above in the images. The Arduino code will be provided below. Check out our prototype here for hints on assembly: https://www.thingiverse.com/thing:2633507 ...until we get some more documentation up for this version. The SketchUp file is included. It contains both the original prototype and the new version. It also has some designs not included in V 2.0 but you're free to use them/modify them. Video of it in action: https://www.youtube.com/watch?v=4-jtV0Y1T68 ARDUINO CODE Arduino sketch used: // Simple Stepper Motor Control // // by Achim pieters, www.studiopieters.nl // // // Defines pins numbers const int stepPin = 7; const int dirPin = 8; int customDelay,customDelayMapped; // Defines variables void setup() { // Sets the two pins as Outputs pinMode(stepPin,OUTPUT); pinMode(dirPin,OUTPUT); digitalWrite(dirPin,HIGH); //Enables the motor to move in a particular direction } void loop() { customDelayMapped = speedUp(); // Gets custom delay values from the custom speedUp function // Makes pules with custom delay, depending on the Potentiometer, from which the speed of the motor depends digitalWrite(stepPin, HIGH); delayMicroseconds(customDelayMapped); digitalWrite(stepPin, LOW); delayMicroseconds(customDelayMapped); } // Function for reading the Potentiometer int speedUp() { int customDelay = analogRead(A0); // Reads the potentiometer int newCustom = map(customDelay, 0, 1023, 300,4000); // Convrests the read values of the potentiometer from 0 to 1023 into desireded delay values (300 to 4000) return newCustom; }