Why do I need the SBox
What does SBox do
Steps making the SBox
Connections
Wio terminal and Arduino IDE
Prepare SD card image
Arduino Libraries for SBox project
Coding
Box assemly

Published December 3, 2022 © CC BY-ND

SBox - My Fat-Killer machine

As a lady who always look to keep fit, do you want a machine to help you to maintain your discipline to sugars? SBox is here!

BeginnerFull instructions provided5 hours134

Things used in this project

Hardware components

Seeed Studio Wio Terminal

Seeed Studio Grove - Ultrasonic Ranger

Seeed Studio wio terminal chasis - battery

make wio terminal to be a stand-alone running device

Storage Box

for stocking snacks

Software apps and online services

Arduino IDE

Story

Why do I need the SBox?

As a girl who does exercise a lot but favors sugars in daily life, disciplining myself to keep fit sometimes is complicated work.

I understand that the key is to control my daily consumption of snacks that contain sugar. How am I supposed to do that? Here comes the SBox idea - It will help me to calculate and control the quantity of snacks that I will have each day.

What does SBox do?

SBox is a box, and my favorite snacks are stored inside this box. Its rules are set to - 3 times a day - that I can take snacks out of the SBox.

There is a terminal(wio terminal) with a screen outside of the box. At the beginning of the day, it will tell me that there will be 3 times that I can take snacks from it.

Each time I take snacks, the information will change and tell me the remaining chances left for the day.

When all 3 chances are used up and I reach for it another time, SBox will remind me and display a girl that is surely not the type that I want to be, while a buzzing sound is produced at the same time.

Check below video how it works.

Steps making the SBox

Connections

It's very easy, only 3 components are needed -

1 x Wio terminal

1 x Wio terminal chasis battery

1 x Grove sensor

Wio terminal and its battery connection.

Connect the grove sensor to the "D0" port of the wio terminal. D0 located on the right side of the front panel, right under the blue button. (Click here to visit the wiki page of the wio terminal to learn more if you wish)

This is how my wirings look like.

Wio terminal and Arduino IDE

Wio terminal is compatible with Arduino and you can use Arduino IDE to program it. There will be some libraries and drivers needed in order to make that work. The Seeed wiki page has explained it in very detail. Check here.

Prepare SD card image

Wio terminal processes images formatted with ".bmp". The workflow is to

Prepare a desired image
Convert it to binary ".bmp" file with dimension fit to wio terminal screen(230x235 in pixels)
Put the file to SD card's root directory

Instructions for the above 3 steps can be found from Loading Image in Seeed wiki. Note the size of the image should be set around 230x235 pixels to fit wio terminal's screen.

Arduino Libraries for SBox project

We need the following libraries

Grove ultrasonic sensor
Step 1. Download the UltrasonicRanger Library from Github.
Step 2. Refer How to install library to install library for Arduino.
RawImage.h - for SD card image
Download it and put it in the same directory as your Arduino SBox project locates
"Seeed_FS.h" - can be downloaded from Arduino IDE
"TFT_eSPI.h" - can be downloaded from Arduino IDE

Coding

Check the "code" section on this project.

Box assemly

Wio terminal outside of the box

Grove ultrasonic range inside the box

And SBox is ready to go!

Code

Arduino codes

#include"TFT_eSPI.h"
#include "Ultrasonic.h"
#include"Seeed_FS.h"
#include"RawImage.h"

TFT_eSPI tft;
Ultrasonic ult(0);
int QTY = 3;

void setup(){
  tft.begin();
   if (!SD.begin(SDCARD_SS_PIN, SDCARD_SPI)) {
        while (1);
    }
  tft.setFreeFont(&FreeSansBoldOblique9pt7b);
  pinMode(WIO_BUZZER, OUTPUT);
  tft.setRotation(3);
  tft.fillScreen(0x8228);
  tft.setTextSize(1);
  tft.setTextColor(0xFFFF);
  tft.drawString("Today",140,80);
  tft.drawString("You have 3 times to get your snacks",3,110);
  Serial.begin(9600); //Serial monitor
}

void loop()
{
  long Distance = ult.MeasureInCentimeters();

  if ((Distance < 20) && (QTY >0))
  {
    QTY = (QTY - 1);
    tft.fillScreen(0x8208);
    tft.setFreeFont(&FreeSansBoldOblique12pt7b);
    tft.drawString("You still left",85,80);
    tft.drawString(String(QTY),160,100);
    tft.drawString("times to take your snacks",10,120);
    Serial.print("Acitvated and QTY = "); //Serial monitor
    Serial.println(QTY); //Serial monitor
    delay(5000);
  }
  else if ((Distance < 20)&&(QTY == 0))
  {
      Serial.print("Acitvated and QTY = "); //Serial monitor
      Serial.println(QTY);  //Serial monitor
      tft.fillScreen(0x81C7);
      tft.setFreeFont(&FreeSansBoldOblique9pt7b);
      tft.drawString((String)"All used up today,see you tomorrow",5, 100);
      tone(WIO_BUZZER,587);
      delay(1000);
      drawImage<uint8_t>("fat.bmp", 0,0);
      delay(1500);
      noTone(WIO_BUZZER);
      Serial.println("bye bye"); //Serial monitor
      exit(0);
  }
  else
  {
    Serial.print("Distance to me now: ");//Serial monitor
    Serial.print(Distance);//Serial monitor
    Serial.println(" cm");//Serial monitor
    delay(250); //Serial monitor
  }
}

SBox - My Fat-Killer machine