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DIYbio Orbital Shaker V 1.0

by ProgressTH, published

DIYbio Orbital Shaker V 1.0 by ProgressTH Nov 8, 2017
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Contents

Design Tools

Sketchup

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193Views 63Downloads Found in Biology

Summary

EDIT: Now includes a draft of the assembly instructions. Wiring diagram still to come.

This is our first attempt at a DIYbio orbital shaker.
A video demo is available here: https://www.youtube.com/watch?v=TnfxUq-xGas

Using 608ZZ bearings, the motion control is smooth, reliable, and quiet. Wiring diagram and assembly instructions coming soon. The files are here for those that want to take a crack at it or begin modifying the design.

The SketchUp file is also included.

Parts:

12V stepper motor
Pololu DRV8825 stepper driver
Arduino Micro Pro
Potentiometer
Rocker Switch
DC Adapter (Female)
608ZZ bearings (x6)
3mm bolts (x3)
3mm nuts (x3)
3mm screws (x3)

We used a combination of friction welding and hot glue to assemble the motion system. Hot glue is used to connect the pegs and holders around and inside the bearings. Everything else is friction welded.

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;
}

Print Settings

Printer:

ExtraBot 3020

Supports:

Yes

Resolution:

Low

Infill:

20-40%


Notes:

Some support is necessary (for the housing and some other parts). Check everything in your slicer before printing.

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Amazing! next project for me. Thanks!

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