Published July 19, 2018 © LGPL

Rotating Platform!

A small, portable rotating platform. Great for reviews!

IntermediateShowcase (no instructions)11,218

Things used in this project

Hardware components

Arduino UNO

ATtiny13

Stepper motor

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

3D Printer (generic)

Soldering iron (generic)

Story

This is the second version of my rotary platform. I make videos for YouTube and needed something I could present my components and completed projects on. So I decided to build this thing! The first version was based on an Arduino, but I considered it as too expensive just for powering a stepper motor and setting its speed. So I went for the ATtiny13A which is much cheaper. The electronics look the following:

The ATtiny reads the value from the potentiometer and applies a certain delay in the code to speed up or down the rotation.

The platform itself I printed on my Anet A8 and it is removable:

To program the ATtiny, I used this schematic and an Arduino:

After that you can write a standard Arduino program without any changes for the syntax or anything. The only thing you should remember is that you only have 1 KB of space for your program.

The pinout, just in case:

Please, watch this video about the building process:

If you liked it, please leave a like and comment on YouTube! I would really appreciate that :)

PS: I applied a little bit too much voltage to the schematic, it would be good to add a buck converter...

Code

The code

int in1 = 0;
int in2 = 1;
int in3 = 2;
int in4 = 3;

int val = 1;

#define pot A0

void setup() {
  pinMode(in1,OUTPUT);
  pinMode(in2,OUTPUT);
  pinMode(in3,OUTPUT);
  pinMode(in4,OUTPUT);
  
  pinMode(pot, INPUT);
}

void loop() {
  val = analogRead(pot) / 200;

  digitalWrite(in1, HIGH);
  digitalWrite(in2, HIGH);
  delay(val);

  digitalWrite(in1, LOW);
  digitalWrite(in2, HIGH);
  delay(val);

  digitalWrite(in2, HIGH);
  digitalWrite(in3, HIGH);
  delay(val);
  
  digitalWrite(in2, LOW);
  digitalWrite(in3, HIGH);
  delay(val);
  
  digitalWrite(in3, HIGH);
  digitalWrite(in4, HIGH);
  delay(val);
  
  digitalWrite(in3, LOW);
  digitalWrite(in4, HIGH);
  delay(val);

  digitalWrite(in1, HIGH);
  digitalWrite(in4, HIGH);
  delay(val);
  
  digitalWrite(in1, HIGH);
  digitalWrite(in4, LOW);
  delay(val);

}

Credits

mPelectronic

3 projects • 23 followers

Rotating Platform!

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Custom parts and enclosures

The 3d model, altough it is just a prototype.

Code

The code

Credits

mPelectronic

Comments

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Rotating Platform!

Rotating Platform!

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Custom parts and enclosures

The 3d model, altough it is just a prototype.

Code

The code

Credits

mPelectronic

Comments

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