Just Encase Design Challenge – Winter Driving Safety (Blog #2)

Welcome to Blog #2 of Winter Driving Safety

I have been working on the GPS speedometer, carbon monoxide detector and the mini-weather station all at once. This wasn’t a good idea since I get sidetracked very easily and get nowhere. So, I started to focus on one thing at a time, starting with the weather station. This weekend I got the temperature and humidity sensor working with the TFT screen. My first issue I ran into was I didn’t have a TFT screen in amongst all my collection, or so I thought. I found a Microduino TFT and modified the wiring to work. This solved the “Not having a colour screen issue”.

Below is the code and pictures of how it works so far.

Microduino TFT

Arduino Connection:

Code:

#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>
#include <dht.h>

#define DHT11_PIN     5

#define TFT_CS        10
#define TFT_RST        9 
#define TFT_DC         8
#define TFT_MOSI 11  // Data out
#define TFT_SCLK 13  // Clock out

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);

dht DHT;


void setup(void) {
  Serial.begin(9600);
  Serial.print("Just Encase Design Challenge");

  tft.initR(INITR_BLACKTAB);      // Init ST7735S chip, black tab

  // Screen size 128x160
 
  // Start-up Screen
  tft.fillScreen(ST77XX_BLACK);
  tft.setCursor(30,40);
  tft.setTextColor(ST77XX_RED);
  tft.setTextSize(1);
  tft.println("Just");
  delay(1000);
  tft.setCursor(30,60);
  tft.println("Encase");
  delay(1000);
  tft.setCursor(30,80);
  tft.println("Design");
  delay(1000);
  tft.setCursor(30,100);
  tft.println("Challenge !!");
  delay(2000);
  tft.fillScreen(ST77XX_BLACK);
  tft.setCursor(30,40);
  tft.println("Winter");
  delay(1000);
  tft.setCursor(30,60);
  tft.println("Driving");
  delay(1000);
  tft.setCursor(30,80);
  tft.println("Safety!! ");
  delay(2500);
  tft.fillScreen(ST77XX_BLACK);
}

void loop() {

  int chk = DHT.read11(DHT11_PIN); // Reads DHT11 Sensor
  switch (chk)
  
  tft.setTextWrap(false);
  tft.setCursor(0, 1); // Temperature Screen Location
  tft.setTextColor(ST77XX_RED);
  tft.setTextSize(1);
  tft.println("Temperature: ");
  tft.setCursor(80,1);
  tft.println(DHT.temperature, 1);
  tft.setCursor(0, 40); // Humidity Screen Location
  tft.println("Humidity: ");
  tft.setCursor(80,40);
  tft.println(DHT.humidity, 1);

  delay(2000);
  
  tft.setTextColor(ST77XX_BLACK); //Erases current readings
  tft.setCursor(80, 1);
  tft.println(DHT.temperature, 1);
  tft.setCursor(80,40);
  tft.println(DHT.humidity, 1);
  
   
}

Working photos:

I would have had more to report but my daughter contracted COVID and is really sick right now. More updates to come shortly!!

I am also adding in basic winter survival into my project. This is important in case you get stuck somewhere and help won't come for a while. I'll explain how to stay warm, what to prepare for and how long to prepare to wait.

Dale Winhold