Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I am new and want to make a compact circuit without a microcontroller. The idea is when you push the button/switch, it will delay the timer for at least 6 hours. After that, it will activate the motor for 20 seconds and loop forever. I am thinking of using a 555 timer with a 1000uF capacitor...
I wanted to make a small random timer like this one (https://creativetechguy.com/utilities/randomtimer) in a small box. My goal with this would be to use it for practicing starts on a dirt bike, by myself. I would, in theory press a button and it would start a random timer and once that timer is...
good morning, first post...
I have a small project that i'm trying to accomplish and i'm am not very good at electronics, so I've come to all of you. Here's my goal;
I"m trying to power (2) rolls of LED strip lights for 3 hours a day, solely by battery. The project will run in a display...
Hi,All
i'm using lpc2148 ;I have generate different hard core delay (as per needed) in my code,but sometimes my code is stucking into hard core delay.So i want to generate delay using timer0 interrupt like i needed millisecond and second and microsecond.So please anyone suggest me...
Hi Guys,
I am embarking on a new project to design a circuit for an automatic vehicle signal actuator.
Outline of the project is this:
The problem.
I have a car that has indicators operating on a standard 12v on-off-on toggle switch. As you can imagine this switch gets left on occasionally...
I'm posting this here because it may be more of an electronics issue.
Anyways, I have a program which calls the dkey function to try to get a value based on the key pressed. I have three keys. Two are tied to their own GPIO pins and the third key functions exactly the same as the other two...
I am coding on pIC16F886 IC. I am trying to generate Fire alarm siren with PWMsignal . I have few questions as below. I copied code from **broken link removed** My spaker circuit look like this video , I am sending PWM pulses instead of audio Input mosfet circuit
I could able to produce based...
Hello.
I am new to this chat, so I hope this is the right forum to post to.
I have the idea to use a 555 to build a small triggered timer with an 'after release' delay. I have been google-ing but can not find the right schematic/design that looks to work for me, so I will try this forum :)...
I've retired from an electro/mechanical test job so now I work on my grand daughters toys(that's what grandpa's do you know :-). I need help with a soft start controller to prevent the jumping that her electric car does when she drives it... at 5 years, she's afraid to use it because of the...
I'd like to make a little programmable timer to countdown minutes and seconds. Doesn't even have to be particularly accurate. I have a 16C57 (bought long ago) I can use and a 16F57 to test on, which I know are ancient but still plenty adequate for this. It needs to (indirectly) drive a...
Hi,
I used the bellow code for generating 1 microsecond in codevision:
include <mega32a.h>
#include <delay.h>
#include <stdbool.h>
#include <io.h>
#include <stdio.h>
static void handleInterrupt();
int i=0;
int c=0;
int nReceiverInterrupt;
unsigned long nReceivedValue = NULL;
unsigned int...
Hi All,
Total Newb here in respects, but have soldered boards before and have an extremely basic understanding of electronics.
I am would like to design a pump timer with 4 separate settable pot timers;
1 timer On for X seconds
1 timer On for Y seconds
1 timer On for A seconds
1 timer On for...
Hi, I don't have very much experience, and I am more than willing to do the research to complete my project. If I can get some assistance into the right direction I would greatly appropriate it.
I'm would like to build a circuit with 5 LEDs that randomly flash for .25 sec to 1 sec +/-. With...
So.
I have started a project on creating circuit that would be able to count money that I could use. The circuit would be able to count from 0-99
A circuit very much similiar to it can be seen here: **broken link removed**
1)
Onthis link you can see a circuit with one segment requiring one...
I have a small project using a 555 timer in a monostable configuration
However, I need an idea on how to block or desense the input signal for a second or so after the timer returns to baseline state
My output (a solenoid) generates a transient upon closing that immediately retriggers the input...
I am doing a project in keil uvision. I need to send timestamp from microcontroller (stm32f103rbt6) in Milliseconds to check events using C. I already found a program similar to this n it`s already in seconds n i need to change it from seconds to millisecond. i am new to microcontroller...
Hello,
I searched around the forum, and didn't find anything that would help me with a project that I have going on.
I purchased some LED strips that I am going to install on my car. The issue is that they are dual color, white and amber. The white is a running light, and then the amber is the...
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