Any savvy entrepreneur is appreciative when a customer exhibits their brand and a customer is astute in this modern social media age, to accompany brand with their original content for potential exposure. That said, we have created a HackADay three-dimensional logo for Trimble Sketchup (formerly Google Sketchup) that may be implemented in to your three-dimensional printed project.


https://3dwarehouse.sketchup.com/model.html?id=672b356f-c8b4-4864-853e-a874c3ddc7e1

The metropolitan in it's natural habitat; unaware, oblivious, purposefully deafened and subsequent prey. To increase perception thus safety, we wed an Arduino Nano and ultrasonic sensor to regulate volume to proximity to some one (thing) behind you; easily deactivated per environment (in-line slide switch) and rechargeable (3XCR2032). Beyond this proof of concept, intention for apparel or accessory (i.e. purse strap, back pack) embedding is ideal.


(Disclaimer) TVMiller is NOT a metro-any-damn-thing!

This prototype of a prototype is a mono-version. A stereo version would merely require dual channels (pots). Aptly, imagine if you will, you plug your head phones in to your purse strap which is embedded with a Metrophone with bluetooth that streams to your smart phone...or or or you could PAY ATTENTION! Sorry not sorry.

Arduino Sketch McSketcherson

// MetroPhones
// TVMiller

#include <SPI.h>

// Chip Select Pin
int csp = 10;

// Sensor Values
long dur, dis;
// Echo Pin
int echo = 4;
// Trigger Pin
int trig = 5;

// Position
int pos = 0;

// Centimeters
// Minimum Distance
int mindis = 0;
// Maximum Distance
int maxdis = 90; // 2.6FT

void setup() {

  // Pot Com
  SPI.begin();
  pinMode(csp, OUTPUT);
  // Set Chip Select LOW
  digitalWrite(csp, LOW);

  // Testing
  Serial.begin (9600);

  // Sensor Pins
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);

}

void loop() {

  // Poll Sensor
  digitalWrite(trig, HIGH);
  delay(10);
  digitalWrite(trig, LOW);
  dur = pulseIn(echo, HIGH);
  // Convert to Centimeters
  dis = dur / 58.2;

  if (dis < maxdis) {
    // Convert Distance to Pot (256 Steps)
    pos = map(dis, mindis, maxdis, 0, 255);
    // Alert Chip
    SPI.transfer(0);
    // Adjust Volume
    SPI.transfer(pos);
  } else if (dis > maxdis) {
    pos = 255;
    SPI.transfer(0);
    SPI.transfer(pos);
  }

  // Testing
  Serial.print(dis);
  Serial.print("  ");
  Serial.println(pos);

  delay(100);
}

Archive
HackADay.io - MetroPhones
Arduino - Arduino Metrophones Will Help Keep You and Your Bag Safe
HackADay - Ears on the Back of Your Head
@AtmelMakes - These Arduino MetroPhones Got Your Back

Add the HackADay Skull and Wrenches logo to your project...
https://hackaday.io/project/11709-hackaday-sketchup-logo

Religion is Pantomime; Wise Up
Written, Directed and Warholed by TVMiller

Archive
http://tvmiller.com/static.php?page=illustrations

Written, Directed and Nancy Graced by TVMiller

Our never ending venture to improve our human experience on Earth often revisits the loo, where a tranquil setting is commonly torpedoed by flecks of contaminated fluid showered up on our under carriage. In our attempt to ease this madness, we have idealized a toilet that segregates the two exhumations, apportioning unsullied splashed back water for the inevitable. Rest assured, our processes will remain stead fast towards the advent of absolutes, eventually freeing all man from an unwilling solution bathing. Female species excluded from design analysis; sorry, not sorry.

Catch up on every crude, innovative, juxtapositioned, cathartic, noxious and ordained
TVShow Series 01 episode before the brand new series debuts this month(gr). #TVShow

Having analyzed simplified wave form migration structures in a three dimensional boundary such as flagellum and deoxyribonucleic acid, we found potential application of vortices to explain wave duality and/or redundant kinetic oscillation in a membrane.