coding and wiring dht11 and ultrasonic hcsr04 arduino
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this is programming sensor dht11 and ultrasonic hcsr04. you can download the library 1. LiquidCrystalI2C 2. dht11 3. adafruit sensor master
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const int led2 = 3;
const int led3 = 4;
void setup() {
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
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switch(dataConv)
{
case 0: {
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
break;
}
case 1: {
digitalWrite(led1,HIGH);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
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}
case 2: {
digitalWrite(led1,LOW);
digitalWrite(led2,HIGH);
digitalWrite(led3,LOW);
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}
case 3: {
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,LOW);
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}
case 4: {
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,HIGH);
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}
case 5: {
digitalWrite(led1,HIGH);
digitalWrite(led2,LOW);
digitalWrite(led3,HIGH);
break;
}
case 6: {
digitalWrite(led1,LOW);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
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}
case 7: {
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
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Serial.println(dataConv);
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const int led3 = 4;
void setup() {
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
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// the loop routine runs over and over again forever:
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// read the input on analog pin 0:
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//write analog equvivalant data on led pins
switch(dataConv)
{
case 0: {
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}
case 1: {
digitalWrite(led1,HIGH);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
break;
}
case 2: {
digitalWrite(led1,LOW);
digitalWrite(led2,HIGH);
digitalWrite(led3,LOW);
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}
case 3: {
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,LOW);
break;
}
case 4: {
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,HIGH);
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}
case 5: {
digitalWrite(led1,HIGH);
digitalWrite(led2,LOW);
digitalWrite(led3,HIGH);
break;
}
case 6: {
digitalWrite(led1,LOW);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
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}
case 7: {
digitalWrite(led1,HIGH);
digitalWrite(led2,HIGH);
digitalWrite(led3,HIGH);
break;
}
}
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delay(1000); // delay in between reads for stability
}
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#include
#include
#include
#include
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int start =1;
int LinearPot1Pin = A0; // select the input pin for the potentiometer
float sensorValue = 0.0; // variable to store the value coming from the sensor
int MC_travel = 0;
int on =0;
//logging file
File logfile;
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
void error(char *str)
{
Serial.print(\"error: \");
Serial.println(str);
while(1);
}
void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
// Input pins for Arduino
pinMode(kPinReedSwitch1, INPUT_PULLUP);
pinMode(kPinReedSwitch2, INPUT_PULLUP);
pinMode(relayPin, OUTPUT);
Serial.print(\"Initializing SD card...\");
// make sure that the default chip select pin is set to
// output, even if you don\'t use it:
pinMode(53, OUTPUT);
// see if the card is present and can be initialized:
if (!SD.begin(10,11,12,13)) {
Serial.println(\"Card failed, or not present\");
// don\'t do anything more:
return;
}
Serial.println(\"card initialized.\");
// creating a new file for data logger
char filename[] = \"LOGGER00.CSV\";
for (uint8_t i = 0; i < 100; i++){
filename[6] = i/10 + \'0\';
filename[7] = i%10 + \'0\';
if(! SD.exists(filename)){
logfile = SD.open(filename, FILE_WRITE);
break;
}
}
if (!logfile) {
error(\"couldnt create file\");
}
Serial.print(\"Logging to:\");
Serial.println(filename);
logfile.println(\"MC Travel\");
// LCD initialization
lcd.begin(20,4);
lcd.clear();
lcd.setCursor(0,0);
lcd.print(\"Count: \");
lcd.setCursor(0,1);
lcd.print(\"MC Travel: in\");
}
void loop()
{
for(int i = 1; i < 2; i++ )
//an initialization routine just to get cylinder to \"home\"
//although should never really be away from home
{
digitalWrite(relayPin, HIGH);
delay(200);
digitalWrite(relayPin, LOW);
delay (2000);
}
while( count <= runcycles){
if( start ==1 && digitalRead(kPinReedSwitch1)==HIGH){
digitalWrite(relayPin, HIGH);
}
else if (digitalRead(kPinReedSwitch1) == LOW)
// turns on relay when reed switch A is triggered
// Logic reversed because of pullup resistors
{
strokedown = 1;
precountA =1;
start=0;// .
Uart
The document describes a Universal Asynchronous Receiver Transmitter (UART) circuit. A UART allows a computer to communicate with external devices by transmitting serial data. It contains a receiver that takes in serial data and a transmitter that sends out serial data. A baud rate generator is used to synchronize the transmission and reception of bits. The document provides details on the UART components, data encoding, and includes VHDL code for a UART design.
code-nodemcu.docx
bhbfbf jbfb bef bbm bmnb bnmb nbef nqbnmbf bfnmbafb mbfmnb qbn bqnq bbnmb bq bqmn bnb mqbmn bqnbj hqjkh kh kjhjk hkjhqjh khjkh kh qjh jkqh jh jkqh kjqh kjh kjqhjk hjkqhrkjqhkqh kjh jkqhjkqh kqhkqh kqh jkh kjqh kjqhkj hkh khekj jkhkj hqkh kjqhrkjq qh kjhrj qhkjq hkq h kjqhr jq h hq jhqkj qj hkjhjkqhr jkqhrkj h qhr qjrhqjr
Tdm to vo ip 2
This document describes a hardware design that includes components like a codec clock, PLL, and packet memory. It maps these components, describes signal connections between them, and includes processes for transferring data between the memory and codec. The design takes in audio data at 2.048 MHz, converts it to 75 MHz using a PLL, stores it in packet memory, and outputs it to a codec. It handles transferring 160 bytes per packet across two memory banks.
Day1
Here is a program to count in binary using LEDs on pins D11, D12 and D13:
```
int ledPins[] = {11, 12, 13};
void setup() {
for(int i=0; i<3; i++) {
pinMode(ledPins[i], OUTPUT);
}
}
void loop() {
for(int i=0; i<8; i++) {
for(int j=0; j<3; j++) {
digitalWrite(ledPins[j], bitRead(i,j));
}
delay(1000);
}
}
```
This program:
-
Arduino
This code is controlling an access control system using an Arduino. It includes libraries for fingerprint scanning, camera, SD card, and NFC. It can unlock the door by matching a fingerprint, NFC tag, or both. When the door is opened, it takes a picture with the camera and saves it to an SD card. It puts the Arduino to sleep when the door is closed to save power.
131080111003 mci
This document describes how to interface an LCD display with an Atmega 32 microcontroller. It provides details on the pin descriptions of a 16x2 LCD, how to send commands and data to the LCD by selecting the appropriate registers, a code example in C to initialize and write text to the LCD, and screenshots of the code running in Proteus simulation software displaying "AVR 32" and "Atmega32" on the LCD. It also lists common LCD display commands.
Realization of an 8 bit pipelined microprocessor in verilog hdl
The International Institute for Science, Technology and Education (IISTE) Journals Call for paper http://www.iiste.org/Journals
Microcontroller Programming Assignment
The document contains 16 programs with code snippets to control various electronic components and devices using a microcontroller.
Program 1 turns an LED on and off with a 1 second delay using ports on a microcontroller.
Program 2 interfaces a 7-segment display with a microcontroller to display the numbers 0-9 by sending different byte patterns to the display ports.
Program 3 writes a program to count from 00 to FF in hexadecimal on PORT B of a microcontroller.
The remaining programs implement various functions like reading and sending data between ports, serial input/output, controlling motors and relays, interfacing with sensors, temperature control, and displaying values on an LCD screen by interfacing keypads and other external
8051 TIMER COUNTER SERIAL COMM. INTERUPT PROGRAMMING.pdf
Here is the code to interface an 8-bit DAC0808 with the 8051 microcontroller:
#include <reg51.h>
sbit DAC_CS = P1^0; // Chip Select pin
sbit DAC_R_W = P1^1; // Read/Write pin
void DAC_write(unsigned char data) {
DAC_CS = 0; // Select DAC chip
DAC_R_W = 1; // Write operation
P1 = data; // Send data byte
DAC_R_W = 0; // Unselect
DAC_CS = 1; // Deselect DAC chip
}
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- 1. #include <dht11.h> #define DHT11PIN 4 #include <Wire.h> #include <LiquidCrystal_I2C.h>//includesthe LiquidCrystal Library LiquidCrystal_I2Clcd(0x3F,16,2); const inttrigPin= 9; const intechoPin=10; const intbuzzer= 11; const intledPin=13; longduration; intdistance; intSafedistance; dht11 DHT11; voidsetup() { pinMode(trigPin,OUTPUT); pinMode(echoPin,INPUT); pinMode(buzzer,OUTPUT); pinMode(ledPin,OUTPUT); Serial.begin(9600); lcd.begin(); lcd.backlight(); lcd.blink_on() ; } voidloop() { digitalWrite(trigPin,LOW); delayMicroseconds(2); digitalWrite(trigPin,HIGH); delayMicroseconds(10);
- 2. digitalWrite(trigPin,LOW); duration= pulseIn(echoPin,HIGH); distance=duration*0.034/2; Safedistance =distance; if (Safedistance <=10 ) { digitalWrite(buzzer,HIGH); digitalWrite(ledPin,HIGH); } else{ digitalWrite(buzzer,LOW); digitalWrite(ledPin,LOW); } lcd.print("cm");//Printsstring"Distance"onthe LCD lcd.setCursor(0,0); lcd.print("Distance:"); lcd.print(distance); lcd.print("cm"); Serial.print("Distance:"); Serial.println(distance); intchk = DHT11.read(DHT11PIN); lcd.setCursor(0,1); lcd.print("Temperature:"); lcd.print((float)DHT11.temperature,2); Serial.print("Temperature (C):"); Serial.println((float)DHT11.temperature,2); delay(1000); }