Created May 30, 2019 © GPL3+

Password Holder with Avnet Brainium

Create a device that will show a password only if you do the right motion with the Avnet Brainium.

IntermediateFull instructions provided4 hours47

Things used in this project

Hardware components

Adafruit Feather HUZZAH with ESP8266 WiFi

Adafruit FeatherWing OLED

5 mm LED: Red

Resistor 330 ohm

Avnet SmartEdge Agile Brainium

Software apps and online services

Arduino IDE

Avnet Brainium

IFTTT Maker service

Adafruit IO

Story

Introduction

I wanted to create a device that would allow someone to see a hidden message but only if they could do a certain motion followed by pressing some buttons. I was thinking that this would be a cool thing that you could incorporate into an escape room or just a complicated way to make sure that only people who you want to show your WiFi password can see your WiFi password. If you want to make a cool complicated, escape room-esque device then this build will probably be for you!

Setting up Avnet Brainium

The brainium device has a lot of sensors packed into it's very small frame including: pressure, temperature, light, motion, etc. The one that we are going to use is (in my opinion) the main reason why you will want to use this platform - the motion recognition. I won't go into too much detail but essentially you can train the device to recognize certain motions and you can set up actions for when the device recognizes those actions. It has IFTTT capability (which we will use) to create an action.

To start using the device, you can follow the Avnet Brainium quick start guide - https://brainium.blob.core.windows.net/public/docs/Quick%20Start%20Guide.pdf

https://iotosphere.com/2019/05/09/hands-on-with-the-smartedge-agile/

Once you have read through that and have gotten your device online, we'll start with motion training. I trained a star, a triangle and a square in mine. To start, you should create an AI Studio Workspace. Follow the directions in the pictures below:

1 / 7 • On the side view, select Motion Recognition and then click the + icon in the corner

Doing that will create a model that you can reference in your project. Follow the pictures below to add that rule to your project.

1 / 5 • Select List of Projects and then select your project (create one if you don't have one yet)

From here you should be all set with the Avnet Brainium. We will now set up the Adafruit IO section.

Adafruit IO

We need to get two things from the Adafruit IO, the first being the Access Key and the other is a feed that we can write to from IFTTT. Log in or sign up for an Adafruit IO account at io.adafruit.com and follow the pictures below to get the Access Key.

1 / 4 • It should open into the dashboard. Select Actions

Follow the instructions to create your dashboard and get your feed name.

1 / 6 • Click on Create a new block

IFTTT

Now that the Adafruit IO is properly configured and you have the feed name, you can now connect the Avnet Brainium and Adafruit IO. Log into IFTTT and create a new widget Follow the pictures shown below.

1 / 9 • Select top right corner and select New Applet

Feather Huzzah

So now that the Avnet Brainium, Adafruit IO and IFTTT is configured, the last thing to do is to create the board that we are going to display this information on. Follow the wiring diagram in the schematics. This is what it should look like when it is complete:

Open up Adafruit IDE and load the code shown down below.

Conclusion

Once you are done, you should be able to do the same thing shown in the video shown below:

Code

#include "config.h"
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define BUTTON_A  0
#define BUTTON_B 16
#define BUTTON_C  2

Adafruit_SSD1306 display = Adafruit_SSD1306(128, 32, &Wire);

AdafruitIO_Feed *digital = io.feed("Shapes");

int lastButton = 1;

int order = 1;
  
void setup() {
  
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(14, OUTPUT);
  
  Serial.begin(115200);

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // Address 0x3C for 128x32

  display.display();
  delay(1000);

  // Clear the buffer.
  display.clearDisplay();
  display.display();

  pinMode(BUTTON_A, INPUT_PULLUP);
  pinMode(BUTTON_B, INPUT_PULLUP);
  pinMode(BUTTON_C, INPUT_PULLUP);
  
  while(! Serial);

  Serial.print("Connecting to Adafruit IO");
  io.connect();

  digital->onMessage(handleMessage);

  while(io.status() < AIO_CONNECTED) {
    Serial.print(".");
    delay(500);
  }

  Serial.println();
  Serial.println(io.statusText());
  digital->get();

}

void loop() {

  io.run();
  if(!digitalRead(BUTTON_A) && lastButton == 1){
    digital->save(2);
    lastButton = 2;
  }
  else if(!digitalRead(BUTTON_B) && lastButton == 2){
    digital->save(3);
    lastButton = 1;
  }
    
}

void handleMessage(AdafruitIO_Data *data) {

  Serial.print("received <- ");
  int x = data->toInt();
  
  if(x == 1 && order == 1){
    digitalWrite(12, HIGH);
    order = 2;
  }
  else if(x == 2 && order == 2){
    digitalWrite(13, HIGH);
    order = 3;
  }
  else if(x == 3 && order == 3){
    digitalWrite(14, HIGH);
    order = 4;
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(0,0);
    display.print("The WiFi Network is:\n  X#X#X#X#X#X-WiFi");
    display.println("\nPassword: \n  X#X#X#X#X#");
    display.setCursor(0,0);
    display.display();
  }
  else{
    digitalWrite(12, LOW);
    digitalWrite(13, LOW);
    digitalWrite(14, LOW);
    order = 1;
    display.clearDisplay();
    display.display();
  }
  Serial.println(x);
  
  
}

/************************ Adafruit IO Config *******************************/

// visit io.adafruit.com if you need to create an account,
// or if you need your Adafruit IO key.
#define IO_USERNAME  "your_username"
#define IO_KEY       "your_io_key"

/******************************* WIFI **************************************/

// the AdafruitIO_WiFi client will work with the following boards:
//   - HUZZAH ESP8266 Breakout -> https://www.adafruit.com/products/2471
//   - Feather HUZZAH ESP8266 -> https://www.adafruit.com/products/2821
//   - Feather HUZZAH ESP32 -> https://www.adafruit.com/product/3405
//   - Feather M0 WiFi -> https://www.adafruit.com/products/3010
//   - Feather WICED -> https://www.adafruit.com/products/3056
//   - Adafruit PyPortal -> https://www.adafruit.com/product/4116
//   - Adafruit Metro M4 Express AirLift Lite -> https://www.adafruit.com/product/4000
//   - Adafruit AirLift Breakout -> https://www.adafruit.com/product/4201

#define WIFI_SSID   "your_wifi"
#define WIFI_PASS   "your_password"

// uncomment the following line if you are using airlift
// #define USE_AIRLIFT

// uncomment the following line if you are using winc1500
// #define USE_WINC1500

// comment out the following lines if you are using fona or ethernet
#include "AdafruitIO_WiFi.h"

#if defined(USE_AIRLIFT) || defined(ADAFRUIT_METRO_M4_AIRLIFT_LITE)
  // Configure the pins used for the ESP32 connection
  #if !defined(SPIWIFI_SS) // if the wifi definition isnt in the board variant
    // Don't change the names of these #define's! they match the variant ones
    #define SPIWIFI SPI
    #define SPIWIFI_SS 10  // Chip select pin
    #define SPIWIFI_ACK 9  // a.k.a BUSY or READY pin
    #define ESP32_RESETN 6 // Reset pin
    #define ESP32_GPIO0 -1 // Not connected
  #endif
  AdafruitIO_WiFi io(IO_USERNAME, IO_KEY, WIFI_SSID, WIFI_PASS, SPIWIFI_SS, SPIWIFI_ACK, ESP32_RESETN, ESP32_GPIO0, &SPIWIFI);
#else
  AdafruitIO_WiFi io(IO_USERNAME, IO_KEY, WIFI_SSID, WIFI_PASS);
#endif
/******************************* FONA **************************************/

// the AdafruitIO_FONA client will work with the following boards:
//   - Feather 32u4 FONA -> https://www.adafruit.com/product/3027

// uncomment the following two lines for 32u4 FONA,
// and comment out the AdafruitIO_WiFi client in the WIFI section
// #include "AdafruitIO_FONA.h"
// AdafruitIO_FONA io(IO_USERNAME, IO_KEY);

/**************************** ETHERNET ************************************/

// the AdafruitIO_Ethernet client will work with the following boards:
//   - Ethernet FeatherWing -> https://www.adafruit.com/products/3201

// uncomment the following two lines for ethernet,
// and comment out the AdafruitIO_WiFi client in the WIFI section
// #include "AdafruitIO_Ethernet.h"
// AdafruitIO_Ethernet io(IO_USERNAME, IO_KEY);

Credits

Alex Merchen

24 projects • 39 followers

I'm an EE with a Masters in ECE. I like building things.

Password Holder with Avnet Brainium

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

Setting up Avnet Brainium

Adafruit IO

IFTTT

Feather Huzzah

Conclusion

Schematics

Wiring for Huzzah Feather

Code

Main Code

config.h

Credits

Alex Merchen

Comments

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Password Holder with Avnet Brainium

Password Holder with Avnet Brainium

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

Setting up Avnet Brainium

Adafruit IO

IFTTT

Feather Huzzah

Conclusion

Schematics

Wiring for Huzzah Feather

Code

Main Code

config.h

Credits

Alex Merchen

Comments

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