RDIoT Demo

Google Cardboard VR 3D Viewing Glasses [B158]

* Specs

Your about to purchase the most unique yet such a simplified device to hit 2014. Your very own VIRTUAL REALITY device.This is a simple and inexpensive DIY virtual reality glasses; Installation process is simple and can be completed within 3 minutes; With Cardboard App, you can DIY a virtual reality glasses, like Oculus Rift VR glasses.

Have amazing fun for the price of a few bags of peanuts.

Our kits are 100% top quality with the highest quality lenses ,For more details on what Google 

cardboard is, and where to get the app from see here:

Description:

Weight:100g

Type:3D Glasses

Material:Cardboard + resin lens

Color:Brown

Dimensions:13.5cm*9cm*8cm

Quantity:1 Piece

Suitable for every smart phone running Android 4.1 and above with a screen no greater than 5.1".

NFC compatible phones take advantage of the NFC feature of the kit. Non NFC phones will still work without this feature on your phone.

Installation process is very simple and inexpensive DIY Google virtual reality glasses

Note:This is an unofficial Google Cardboard VR Kit.This kit does not include NFC component.Cardboard applications can be run on most modern Android Android phones runing Android 4.1 (Jelly Bean) & late versions of Android. Google cardboard App can be downloaded from google play store.

Package included:

1 X Cardboard

2 X Lens

2 X Black ceramic magnets

1 X Rubber band

2 X Velcro (already fitted)

TPM-300 Air Quality Module (TPM-300) [S092]

https://www.youtube.com/watch?v=zHqDCyS7dPU

*GitHub : https://github.com/rdiot/rdiot-s092.git

* Specs

Module type: TPM-300

sensor: the air quality sensor

gas detection: ammonia, hydrogen, alcohol, carbon monoxide, methane, propane, Gan, styrene, propylene 

glycol, alkyl phenol, toluene, ethylbenzene, xylene, formaldehyde and other volatile organic gases, incense smoke, wood, paper burning smoke

physical interface: XH2.54-4 vertical socket

output data: TTL level (built in 200 ohm current limiting resistor)

input voltage: 5 + 0.2VDC (no reverse voltage protection)

working current: less than 80mA

the preheating time: less than 60 seconds

response time: less than 10 seconds

recovery time: less than 20 seconds

operating temperature: -10 - 40 C

the humidity: less than 95%RH

storage temperature: -20 - 60 C

storage humidity: less than 60%RH

dimensions: 24 x 20 x 15 (L * W * H)

module: weight of about 20 grams

sensitivity: 0.5ppm hydrogen

the sensitivity attenuation: less than 1%/ years

: more than 10 years service life

* Contents

- Connect 

B ----- D3

A ----- D2

5V ----- 5V

GND ----- GND

- Level

A              B            Level

Low            Low           0

Low            High          1

High           Low           2

High           High          3

- Key Code 

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

int pinA = 2; // A

int pinB = 3; // B

LiquidCrystal_I2C lcd(0x27,20,4);  // LCD2004

void setup()

{

  lcd.init();  // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD2004");

  pinMode(pinA, INPUT);

  pinMode(pinB, INPUT);  

  delay(1000);

  lcd.clear();

}

void loop()

{

  lcd.setCursor(0,0);

  lcd.print("S092:TPM-300 Air Q");

  int valueA = digitalRead(pinA);

  int valueB = digitalRead(pinB);

  int airGrade = -1;

  lcd.setCursor(0,1);

  lcd.print("pinA(H/L)=" + (String)valueA + " ");

  lcd.setCursor(0,2);

  lcd.print("pinB(H/L)=" + (String)valueB + " ");

  if(valueA == LOW && valueB == LOW)

  {

    airGrade = 0;

  }

  else if(valueA == LOW && valueB == HIGH)

  {

    airGrade = 1;

  }

  else if(valueA == HIGH && valueB == LOW)

  {

    airGrade = 2;

  }

  else if(valueA == HIGH && valueB == HIGH)

  {

    airGrade = 3;

  }

  lcd.setCursor(0,3);

  lcd.print("Air Grade 0~3=" + (String)airGrade + " ");

  delay(300);

}

Air Quality Sensor (MQ135) [S037]

https://www.youtube.com/watch?v=JJonDVX8CYQ

*GitHub : https://github.com/rdiot/rdiot-s037.git

* Specs

Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When the

target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration

rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of

gas concentration.

MQ135 gas sensor has high sensitity to Ammonia, Sulfide and Benze steam, also sensitive to smoke

and other harmful gases. It is with low cost and suitable for different application. 

* Contents

- Library : https://github.com/GeorgK/MQ135

- DataSheet : http://www.cooking-hacks.com/skin/frontend/default/cooking/pdf/MQ-135.pdf

- Connect

- Key Code

#include <MQ135.h>

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);  // LCD2004

int pin = A0;

int sensorValue;

int ledPin = 13;

MQ135 gasSensor = MQ135(pin);

float rzero = gasSensor.getRZero();

int ppm = gasSensor.getPPM();

void loop()

{

  lcd.setCursor(0,0);

  lcd.print("S037:MQ135");

  sensorValue = analogRead(pin);

  lcd.setCursor(0,1);

  lcd.print("A0=" + (String)sensorValue + " Resis="+(String)gasSensor.getResistance() +" ");

  float rzero = gasSensor.getRZero();

  digitalWrite(ledPin, HIGH);      // turn the ledPin on

  delay(100);                      // stop the program for some time

  digitalWrite(ledPin, LOW);       // turn the ledPin off

  delay(100);  // stop the program for some time

  lcd.setCursor(0,2);

  lcd.print("rzero=" + (String)rzero + "    ");

  float co2_ppm = gasSensor.getPPM();

  int ppm = co2_ppm / 4;

  //Vrl = val * ( 5.00 / 1024.0  );      // V

  //Rs = 20000 * ( 5.00 - Vrl) / Vrl ;   // Ohm 

  //ratio =  Rs/Ro;     

  lcd.setCursor(0,3);

  lcd.print("co2 ppm=" + (String)co2_ppm + "    ");

  delay(1000);

}