November 24, 2007
Reading for November 27th, are now posted. Enjoy!

October 2, 2007
To upload your thoughtless acts, create a new assignment page like any other lab. You'll see "Thoughtless Acts" listed as one of the assignment options.

May 24, 2008
This site has been archived and is no longer editable. Stay tuned for the next version, coming in the fall!

Home Made Tattoo Pen

Project Members: 
Anirban Sen

I managed to make my DC motor respond to my potentiometer and adjusted the speed of rotation of the motor by adjusting the pot. I then assembled the mechanics for a simple vibrational movement by attaching the cork slice with the motor centered, and attached a straightened paperclip off center to the cork slice. The motor was then attached to the end of a pen casing with the paper clip running through the pen casing to create a point. This provided a nice vibrational motion with the up and down movement necessary for the tattoo pen to work. Of course due to the obvious sanitary risks, I did not use the actual paperclip point to tattoo anything, but potentially it could be replaced with a sanitary needle for it to work.



DC Motor



10K resistor

Battery pack

Paper clip



Arduino Code:

/* * one pot fades one motor * modified version of AnalogInput * by DojoDave <> *  * Modified again by dave */int potPin = 0;   // select the input pin for the potentiometerint motorPin = 9; // select the pin for the Motorint val = 0;      // variable to store the value coming from the sensorvoid setup() {  Serial.begin(9600);}void loop() {  val = analogRead(potPin);    // read the value from the sensor, between 0 - 1024  Serial.println(val);  analogWrite(motorPin, val/4); // analogWrite can be between 0-255}



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