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Questions tagged [blink]

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0
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0answers
22 views

Combined a 555 dimming circuit with a 555 blinking circuit into a 556, LED flickers during dimming

As the title says, I have put together 2 555 circuits (dimming and blinking) into an NE556. I added a switch to toggle between blinking and dimming and used it to drive an LED. However, I noticed ...
0
votes
1answer
50 views

One time blink then turn off circuit

is it possible to change Circuit Diagram for the following example: http://www.redcircuits.com/Page146.htm or https://www.youtube.com/watch?v=mrxdiO1b29A Original: 4 short flashes stay on light ...
0
votes
2answers
128 views

Light circuit for RC car

I'm building a small light system for an RC car, this is the schematic: The power source is 5.5 V. These are the LEDs that I am using, KKHMF 100個 3mm LED 発光ダイオード LED電子部品バッグ 5種類 各20個 - two white, ...
0
votes
1answer
729 views

Create a blinking LED circuit with a z-diode and a capacitor

I was searching for the most simple LED flashing circuit. On a webpage (http://cappels.org/dproj/simplest_LED_flasher/Simplest_LED_Flasher_Circuit.html) I found the following circuit with a transistor ...
0
votes
1answer
91 views

Convert Metronome circuit to Visual Metronome (LED blinker)

I'm trying to make a Visual Metronome, i have a prebuilt one already (bicycle light) but it has a very high frequency of lighting up (2 flashes in 1 second). I have a circuit for metronome, to which ...
-1
votes
1answer
337 views

Simple LED Blinking project - PIC16F877A microController problem

I am trying to simply blink an led light using pic16f877a microcontroller. softwares i am using are, MPLABX IDE, MPLAB IPE and XC8 compiler. I use Pickit 3.5 programmer. My head-aching question is, i ...
0
votes
1answer
530 views

ATTiny85 Not Working at all

I am using Arduino to program my ATTiny85 like this. I am trying to make a simple blink example, here's the code: ...
0
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1answer
252 views

Photoresistor with NE555

I would like to build a circuit with two blinking LEDs using a NE555 timer and a photoresistor. In the schematic below the blinking frequency becomes higher when more light shines on the photoresistor ...
1
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5answers
2k views

How to blink led (~5Hz) at 3.3V (coin battery) with minimal component to save power?

I need to build a circuit to blinka led (about 5Hz) with a coin battery, so on 3.3V. Main specifics: Single coin battery (3.3V) The led is an SMD5050 with 3V and 100mA max. I would save battery as ...
0
votes
1answer
537 views

How does this blinking LED circuit work? [duplicate]

I found a circuit that has an led that is blinking in it. I was interested to see how it works so I took it apart and found that there was no capacitors in IC's in it (here is a picture): I think ...
0
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3answers
757 views

High Frequency Blinking LED [closed]

I need to get an LED blinking at in the 1-5Khz range. I will use a photo detector to sense the blink rate to identify a drone. The drone will be passing though a hoop about 1 foot from the sensor. ...
0
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4answers
15k views

How to set up 40 hz flashing LED lights to light a room?

I am trying to figure out how to light an average size living room or bedroom with lights flashing at 40 Hz at the same time (one big light or many small ones). I assume the range can probably be +/- ...
1
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2answers
489 views

GPIO and clock configuration of STM32F427VG

I am very new in STM32 projects and it is my first time writing a program with STM32. I used to program with AVR and now I should progress to STM32. I have a board with STM32F427VG on it without any ...
2
votes
2answers
535 views

Blinking LED at two different frequencies [closed]

I am trying to build a circuit that will make a LED to blink at a certain frequency, probably by using 555 timer. As the circuit will be supplied by a 3 Volt battery, so I want to extend a feature ...
0
votes
4answers
366 views

Lighthouse LED simulator [closed]

I want to make an LED flash twice every ten seconds to the following character * On 750ms approx, Off 1s , On 750ms approx, Off 7500ms, Repeat. * I am fully aware how to do this with a ...
0
votes
1answer
1k views

Flickering LED on BP3106 based LED Driver

I have got a LED fixture with a flickering problem. As I am unable to check the output due to lack of equipment I would like to research and gather some information first. The switch used is not ...
0
votes
3answers
637 views

Blinking LED at two speeds using 555 Timer

I'm trying to build a circuit that will blink a single LED twice a second for one second and then once a second for two seconds. I can get the individual frequencies with two different 555 timers but ...
0
votes
3answers
262 views

Blinking 3 led's in parallel?

I have a PIC development board which has few on board led's. I am programming MCU so that it can blink 3 led's in a parallel manner. I have made the following code: ...
2
votes
2answers
5k views

STM32F103 GPIO not working

I am programming for LPC microcontrollers (mostly LPC1769), for the past few months with success. I decided though to give STM32 series a try. I just received a no-name board using an STM32F103C8 MCU ...
1
vote
2answers
659 views

How to design blinking LEDs circuit using analog elements only? [closed]

I want to design a circuit to blinking three LED in a row with 2 second delay for shifting/changing using analog elements only (using Resistors, Capacitors and Transistors and without Micro ...
0
votes
3answers
640 views

AVR-C turning led off after number of blinks with interrupts

so what I am trying to do is that I am trying to make the led blink for a certain number of times before it turns off. I want to avoid using delays so I tried utilizing the interrupt and I also used a ...
0
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3answers
1k views

High-efficiency blinking LED circuit

I'm an artist currently working on an installation piece that requires a little more engineering knowledge than I possess. In short, what I'd like to achieve is a 2 LED blinking circuit with battery ...
1
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3answers
562 views

Bike light blink speed adjustment

I am trying to construct a circuit to control an LED in a bike light kind of circuit. This circuit must be designed so that a button press can change the current setting of the light. So for instance ...
0
votes
1answer
518 views

Alternative LEDs Blinking circuit(Analog) Help

Can someone explain the operation of this circuit, I understand the basics of the BJT and its modes, but most of my confusion arises when there is some-sort of feedback loop in the circuit, my thought ...
0
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2answers
1k views

How long will this low duty 555 LED blinker last on batteries?

I know there are many questions about LED blinkers, but I haven't yet found a clear answer for this. I have a 555 circuit blinking a blue led (or three in parallel). I has a low duty cycle (using a ...
1
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2answers
1k views

LED blinking array using LC-circuit

Basically I want to create a blinking unit to drive my LED's. The LED's are used to be driven at a frequency of ~1.5Hz (that made me choose the values of L and C). So here is my schematic. (I am ...
0
votes
1answer
1k views

Launchpad MSP430 incremental blink with button

I'm new with this. I'm trying to make an incremental blinking LED with every time that I push the button, I'm using Energia and Launchpad MSP430, I don't know if somebody can give a example code to do ...
1
vote
1answer
656 views

How to mimic running lights, turn signals and hazards with LEDs for diecast model

20 years ago I took electronics in school. Did very well, but never used it much since so I have forgotten just about all of it. I have been testing in LTspice and just cannot get anywhere with this. ...
1
vote
2answers
1k views

Launchpad blink with button

I am trying to make LED in MSP430G2 Launchpad keep blinking / off with button like Switch example (http://www.arduino.cc/en/Tutorial/Switch) in Arduino/Energia but I seem to miss something stupid and ...
1
vote
2answers
2k views

Minimum files for Atmega1284p AVR-GCC?

does someone have the minimum setup (ie. a 1284p Makefile and an example blink.c) for an ATMega1284p and AVR-GCC? I seem to be ...
2
votes
1answer
758 views

How to get two buttons to work with the 16f628a - C, Hi-tech comp, mplabx

I'm just began exploring my new hobby - mcu electronics. I have bought an 16f628a after reading some forumposts suggestion that is a good mcu for beginners. I have download mplabX, the hi-tech ...
-1
votes
1answer
384 views

PIC16F877A Resets

I have a PIC16F877A and I am supposed to connect 3 LED lights that are series on each output pin the PIC has 40 pins and 33 output pins, if I connect 5 output pins the code I made that will make the ...
6
votes
5answers
12k views

simple, energy efficient circuit to make single IR LED blink

I'm using a 850nm IR LED (spec sheet), and in order to extend my battery life, I'd like to make the LED blink (UF 1.9 V, IF 100 mA). I found a couple of links 1, 2, 3 but they either a) require two ...
3
votes
3answers
2k views

Strange pin behavior with pic16f88

I have been learning(trying to at least) how to work with pic microcontrollers, and I have noticed this behavior that I am not sure whether it is just my fault or is supposed to happen. I wrote the ...
3
votes
2answers
19k views

Hello world VHDL program - blinking LED

I am trying to get a simple blinking LED program working on my FPGA and I am having problems. Instead of blinking the LED stays on the entire time. I tried writing my on but then I just copied an ...
0
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1answer
2k views

Arduino Blink example does not run after upload from eclipse

I just started with my first Arduino project. I am trying out the Blink example. I have set up eclipse for arduino 1.0 and the code compiles without errors (both lib project and blink project). I used ...
6
votes
4answers
5k views

Blinking an LED using a generator as the source of electricity

I made a little windmill which is turning a small generator to light up an LED, but the voltage is too low even with high wind speed for the LED to glow. I thought maybe the electricity could be ...
2
votes
3answers
884 views

Create a circuit that can flash IR LEDs at 38.5kHz and be turned on or off by microprocessor

Several other questions are posted about methods for flashing an LED, but one additional requirement I have is the ability to turn the circuit on or off with a micro controller (Netduino, 3.3v). This ...
24
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10answers
91k views

Blink an LED with just a capacitor?

Is it possible to blink an LED using just a capacitor? (and maybe a resistor). For example, if I want to LED to blink once every 2 seconds. Is that possible? I know it can be done with a 555 as well ...