Author |
Message |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Wed Nov 09, 2011 7:08 am Subject: Ultrasonic distance measuring |
I am counting on the one at school and got permission to use it, hopefully I will have some time before the exams 2 weeks later. Btw is it possible that breadboard is not suitable for these kinda circ ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Wed Nov 09, 2011 5:49 am Subject: Ultrasonic distance measuring |
Most of the time we were too busy with calculations though maybe we did see those notations and I forgot it. It wouldn't be the first time . Originally this project I'm working on include 3 people. ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Wed Nov 09, 2011 4:40 am Subject: Ultrasonic distance measuring |
I am studying physics so I know way around basic electronics, in my defense I never saw one in any example ciruit we've been shown I didn't know so I learned whats the big deal? Don't get me wrong. |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Wed Nov 09, 2011 3:37 am Subject: Ultrasonic distance measuring |
oh.. I never saw a notation like this. It good to learn that. Thanks |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Tue Nov 08, 2011 11:03 am Subject: Ultrasonic distance measuring |
I forgot to put HS to config earlier so when tested again (#use delay(clock=20M) with 4mhz on circuit led flashed about 4 second from start to start it seems a bit off still |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Tue Nov 08, 2011 10:23 am Subject: Ultrasonic distance measuring |
I will take another look at my setup to confirm my oscillator issue I will post the results. Btw
http://img842.imageshack.us/img842/1117/090ultrasonicrangersche.png
I tried this circuit o ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Tue Nov 08, 2011 8:56 am Subject: Ultrasonic distance measuring |
I tried PCM_Programmer's code for led. It was on for half second and off for half second. considering delay_ms(500) it should be right?. I also tried my
555 circuit again pin3 is always 0v with my c ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Tue Nov 08, 2011 7:45 am Subject: Ultrasonic distance measuring |
My first curcuit was this ;
http://img256.imageshack.us/img256/599/39848396.png
In my code I triggered the 4th in on 555 with
[/code]
output_high(pin_b7);
delay_us(250);
output_low(pin_b7 ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Tue Nov 08, 2011 6:20 am Subject: Ultrasonic distance measuring |
Sorry I forgot the tranducer specs
here they are :
1.Model:TCT40-16R/T (Diameter 16mm)
2.Nominal frequency:40KHz
3.Emission sound pressure (at 10V):≥117dB
4.Reception sensitivity (at ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Tue Nov 08, 2011 4:03 am Subject: Ultrasonic distance measuring |
Since you don't have an oscilloscope, you should test low speed blinking
of an LED. Example:
#include <16F877.H>
#fuses HS, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock = ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Mon Nov 07, 2011 7:09 pm Subject: Ultrasonic distance measuring |
I tried this code and got 2.2v output on multimeter. My first code persistent on not working though. any help would be great, thanks
output_high(pin_b2);
delay_us(12)
output_low ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Mon Nov 07, 2011 3:14 pm Subject: Ultrasonic distance measuring |
I'm using a simple JDM programmer I got from a friend so all my programming is done outside the board (btw I'm currently using a breadboard if thats somehow relevant)
When I first encountered outp ... |
Topic: Ultrasonic distance measuring |
RAzorex
Replies: 23
Views: 28431
|
Forum: General CCS C Discussion Posted: Mon Nov 07, 2011 2:39 pm Subject: Ultrasonic distance measuring |
Hi everyone
Let me start by saying that I'm a starter at pic programming yet I've made a mistake by choosing to build a robot for my school project (its a long story:))
I am using a 16f877 and 4mhz ... |
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