led blinking

Hello everyone. im sure this has been answered many times but I can’t seem to find the answer. Im trying to build astable multivibrator to use in a 12v Scalextric police car. I have it switching at the speed I desire but the leds don’t turn off fully when they are switching. Can’t post a video...

Hi Guys, I love colorful LED light strings. I've been wanting to hand some around the house and finally got around to it. I purchased a few that seemed high quality on the web and hung them around the house. The lights worked well at first, however they soon began malfunctioning. Basically the...

Dear All, Currently, l am working on a project where l need to differentiate the led behavior due to light or color intensity. The aim is to identify the end of fade in /out and the beginning of slow blinking in sequential processes. l want to identify how long fade in/out and slow blinking...

First time repairing a LED. A year after purchase, my barn light started flashing non stop every seconds. At first I thought it was the light sensor but changing it did not solve the issue. The next possible culprit would be the driver, but unfortunately there is nothing written on it to...

Hello, I am newbie in programming the microcontroller. I would like to test the micro by blinking the LED in a pin. The micro is SAMR35J18B and I am using ATMEL ICE programmer and ATMEL studio software for the programming. I am able to detect the micro in the software but I could not find proper...

I built this circuit on my own thinking that it would work as blinking circuit. But the LED is not glowing at all ! and obviously its not working as LED blinking circuit. I want complete explanation of this circuit. Thanks !

I am having trouble understanding how this circuit works. I've breadboarded it out and the LED flashes but I can't seem to wrap my head around how the NPN vs the PNP is creating the flash. Any help is greatly appreciated!

Hi Guys, hope all's well. I was designing a dark-sensitive LED blinking circuit for myself and need some help. Following is all about my little project. Scenario I want to switch on my LED bank automatically in the dark. There are 150 LEDS in my LED bank. The attachment includes my design...

Hi! I would be very grateful if you can help me. I have been building some circuits to turn on a LED when the battery is low (images), but there is a problem: The led dim and blink between the OFF and fully ON state for some minutes. My circuit consumes 0.23A and is supplied by a 3.7v/1400mAh...