Published May 2, 2017 © MIT

Wherzutat-In-a-Box - IoAT

IoAT - The Internet of Annoying Things used to make a hidden buzzer that will drive people crazy.

BeginnerFull instructions provided30 minutes829

Things used in this project

Hardware components

Espressif ESP8266 ESP-01

Buzzer

Battery Charging Board Charger Module 5v-3.3v

Breadboard (generic)

Jumper wires (generic)

box

Software apps and online services

Arduino IDE

Story

Taking inspiration from Annoy-O-Bug, I cooked up a remote version due to my having a poker face that has me in the hole every time. Mine doesn't have the nice PCB (yet, I am still learning Eagle), but does have the annoying factor, even from afar. The only downside is that I don't get to see their faces as they wander around aimlessly.

The BreadBoard all wired up

I wanted to have a device that would make noise, one of those annoying noises you'll will be wandering around forever trying to find.

Parts

an ESP-01,

a buzzer,

a box,

a battery - I have a 3.7v 1000ma battery

and Blynk, used to create the IoAT (Internet of Annoying Things).

Your basic ESP and the 4 B's it looks like.

I made the breadboard first. I have an adapter for the ESP-01 to a breadboard. They are cheap on eBay and come in very handy. The buzzer is connected through pin GPIO2 of the ESP. I had a small 5v LiPo battery charger board which has served me well on my past couple of ESP projects. I find them on eBay for a couple bucks each.

LiPo battery module

Wiring

The introduction picture is a pretty good schematic for the project. Power goes from the battery/module to the ESP, ground is shared with the buzzer. The power comes from the pin when it is turned on. I soldered on the connector for the LiPo battery and used two female jumper wires for the outgoing power and ground, connecting to Vcc and GND of the ESP-01. Ground is also run to the buzzer.

I used GPIO2 pin to control the buzzer. As such the buzzer is connected to pin GPIO2. That is the wiring part of it.

Blynk

I had only really used Blynk once before. I thought this would be a fun little project to use it for. On the Blynk app on my iPhone, one button was setup for GPIO2, turn on and turn off. (I have some ideas to expand upon that on and off function, but that if for another project/post.) There is a short sketch which is the example script from Blynk with a couple of lines tossed in.

Command central

Container

I also found a little, nondescript box. The prefect size to fit everything, ability to sneak it into an office (in my case), and just muffled enough to make it even harder to find the source of the sound.

All boxed up and ready for delivery!

Test Run

Tomorrow it is going into the office with me. Once in my buddy's office I can bother him from anywhere on campus!! I wonder how long it will take him to find it. If you make one, take it along on your next vacation and leave it for someone, remind them of you when you are miles away but still get them with the IoAT.

Code

The code

#define BLYNK_PRINT Serial


#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
int wherzutat =0;
int buzz =2;

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "AUTH token";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "ssid";
char pass[] = "password";


BLYNK_WRITE(V2){
  wherzutat = param.asInt();{
    // button pressed
    if (wherzutat == 1);
  } 
  digitalWrite(buzz, 2000);

void setup()
{
  // Debug console.
  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);
  }

void loop()
{
  Blynk.run();
}

Credits

wrightmac

16 projects • 22 followers

Network geek by day, apprentice hardware hacker by night, curious-tinkerer always, and Apple Fanboy since 1984!

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Wherzutat-In-a-Box - IoAT

Things used in this project

Hardware components

Software apps and online services

Story

Parts

Wiring

Blynk

Container

Test Run

Schematics

Schematic for IoAT

Code

The code

Credits

wrightmac

Comments

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Wherzutat-In-a-Box - IoAT

Wherzutat-In-a-Box - IoAT

Things used in this project

Hardware components

Software apps and online services

Story

Parts

Wiring

Blynk

Container

Test Run

Schematics

Schematic for IoAT

Code

The code

Credits

wrightmac

Comments

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