Things used in this project

Hardware components:
Osh park
OSH Park Custom fabricated PCB
Board Link:
Adafruit industries ada1536 image
09590 01
LED (generic)
08377 02 l
Resistor 330 ohm
Adafruit industries ada654 image 75px
Coin Cell Battery CR2032
CR2032 Holder
Atmel ATTiny85
8-pin DIP socket
A000066 iso both
Arduino Arduino UNO & Genuino UNO
Used only for programming the ATtiny
Panasonic eca1hm2r2
Capacitor 10 µF
Used only for programming the ATtiny
Software apps and online services:
Hand tools and fabrication machines:
09507 01
Soldering iron (generic)


PCB Design


Annoying CircuitArduino
//Code produced by Alex Wulff:

#define BUZZ      0
#define LED       1
#define INITIAL   5000
//10,000 ms yields a total sequence time of 46.5 Seconds
//20,000 ms yields a total sequence time of 91.5 Seconds
//30,000 ms yields a total sequence time of 136.5 Seconds
//You get the pattern. Each 10 seconds yields another 45
//seconds of total time on the sequence.

void setup() {
  // put your setup code here, to run once:
  pinMode(BUZZ, OUTPUT);
  pinMode(LED, OUTPUT);

  //Flash the light to make sure the device is working
  for (int i = 0; i < 5; i++) {
    digitalWrite(LED, HIGH);
    digitalWrite(LED, LOW);

void loop() {
  for (int i = 1; i < 50; i++) {
    digitalWrite(BUZZ, HIGH);
    digitalWrite(LED, HIGH);
    digitalWrite(0, LOW);
    digitalWrite(LED, LOW);


Dsc 0358 aupidjdwxg
Alex Wulff

I'm an 18-year-old maker from Upstate New York. I love Arduino, embedded systems, 3D printing, and iOS development.



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