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...