Device - Page 1
Forum section: electronics / beginners

author: Squirrel
author_rank: Contributor
timestamp: March 04, 2010, 03:34:51 pm
content: Hi!I need to bild one device. Main operating voltage are 12 voltage, DC.When device got trigger voltage from trigger, it blinks red led tree times. And when it again, it blinks green led. and after that red green red etc. And all from same trigger. device need to remember what led it blinks last time and blinks other. I have thinking and found no solution. Can you help me?

author: rossmoffett
author_rank: Regular Contributor
timestamp: March 04, 2010, 04:39:12 pm
content: Is this an assignment?

author: Squirrel
author_rank: Contributor
timestamp: March 04, 2010, 05:22:05 pm
content: Quote from: rossmoffett on March 04, 2010, 04:39:12 pmI do not understund what you mean? (english is not my best language). It is not job & etc, it is from my hobby

author: rossmoffett
author_rank: Regular Contributor
timestamp: March 05, 2010, 01:52:09 am
content: I meant an assignment for school, in which case it's best you do it yourself with the tools you've been taught to use to-date. Asking others for help on school assignments not only hurts your learning process, but is often obvious cheating because tools you haven't been taught to use are in the circuit.But that doesn't apply to a hobbyist such as yourself, so here is my advice:The device you need is called aFlip-Flop. There are a few kinds, you should use a T-flop or a JK-flop. Using just one input, you toggle between high and low. It has a Q and a notQ output, one for each LED. When one is high, the other is low.

author: Squirrel
author_rank: Contributor
timestamp: March 05, 2010, 02:07:40 pm
content: Quote from: rossmoffett on March 05, 2010, 01:52:09 amThank you for help. =)I have studyed my school to end and I'm electrician now, but operate normally >230v AC-voltage and low voltage electric (specially DC) are me not so familiar should it be.Device is caming to my car. When I lock doors (from remote control), it should blink red and open, it blinks green. My old Mercedes was that kind system, but new ones that blinks turn signal's, witch I do not like. I prefer modified to old way.

author: rossmoffett
author_rank: Regular Contributor
timestamp: March 05, 2010, 02:37:08 pm
content: You will still need to come up with something else for the blinking, by the way, the Flip-Flop will just switch from one LED to the other on click.

author: Squirrel
author_rank: Contributor
timestamp: March 05, 2010, 03:52:56 pm
content: Quote from: rossmoffett on March 05, 2010, 02:37:08 pmThat part I know already. Hardest part for me was that changing.

author: ArtemisGoldfish
author_rank: Regular Contributor
timestamp: March 07, 2010, 02:25:16 pm
content: Sounds like something you could do with a small microcontroller (PIC 12 series, I don't know what the general equivalent to that is for the AVRs) but that necessitates a programming device.

author: Simon
author_rank: Unknown
timestamp: March 11, 2010, 07:44:51 pm
content: Quote from: ArtemisGoldfish on March 07, 2010, 02:25:16 pmand programming skills, I took a long time to get into micro controllers and really made the effort becuae I realized I had to to keep up, there are so many even silly projects that can be greatly simplified with a micro controller because it will carry out a custom function instead of requiring 3+ IC's and allows you to change the design to some extent. For example I made a voltage indicator with a 3 colour led, I put the led in round the wrong way: instead of reversing the led I just reversed the pin functions in the pic's program, simple !