Ultrasound Measurement Device - part.1

Work in progress...

The objective of this work is to design and manufacture a machine to measure distances using an ultrasonic sensor. Because sound speed variation with temperature, will be implemented and a temperature sensor, which will increase measurement accuracy.

The schematics:

The PCB:

The components:

IC1 – ATMEGA8,

IC2 – LM7805,

D1 – 1N4004,

C6,C7 – 47uF,

C2,C3 – 22pF,

C1,C4,C5,C8,C9,C12 – 100nF,

R1,R4 – 10K,

R2 – 330R,

R3 – 220R,

R7 – 1K,

Trimmer 10K,

Q1 – 16MHz,

L1,L2 – Led,

 Code i used for testing:

///----------------------------------------///
///         by gabimincu 10.05.2012        ///
///  masurarea distantelor cu ultrasunete  ///
///           gabimincu@gmail.com          ///
///        www.robot-fun.blogspot.com      ///
///----------------------------------------///

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
const int pingPin = 7;               // pin trig senzor
const int inPin = 9;                 // pin echo senzor
int t=0;
int i;
float tempc = 0,temp;                     //variabile temperatura
int d;                        
float durata,cm;                     //variabile distanta

void setup()
{
  Serial.begin(9600);
  lcd.begin(16, 2);
  pinMode(8,INPUT);
}

void loop()
{  
  afisare();

Do you want the rest of the code?

}





Next step: construction of box