Showing posts with label LED Circuit. Show all posts
Showing posts with label LED Circuit. Show all posts
Decorated Headlight for Your Motorbike
as you all know there is too many lights in the market for decorate your bike. but today i will tell you how to create very smart and low cost light for your bike believe me its awesome.
for this i have used 12 flash light LED and plastic plate for fix that LED.
for this i have used 12 flash light LED and plastic plate for fix that LED.LED Flare with PIC16F628A Microcontroller
PIC16F628A is 18-pin Flash-Based, 8-Bit CMOS Microcontroller with nanoWatt Technology.this is my first pic project. here is the pin connection for pic16f628a.
schematic for LED Flare,
LED banner technology
today i'm going to tell you about LED banner. its very popular now in here in sri lanka. its not difficult to create. in this banner i used two LED panel and S1 control circuit.and also 5V SMPS power supply unit.this S1 unit, it can connect to computer through serial port. and the software which i used here called 'powerled' it totally free of charge and u can get it with the S1 unit.
UP/DOWN FADING LED CIRCUITS
These two circuits make a LED fade on and off. The first circuit charges a 100u and the transistor amplifies the current entering the 100u and delivers 100 times this value to the LED via the collector-emitter pins. The circuit needs 9v for operation since pin 2 of the 555 detects 2/3Vcc before changing the state of the output so we only have a maximum of 5.5v via a 220R resistor to illuminate the LED. The second circuit requires a very high value electrolytic to produce the same effect.
LM3909 LED flasher
The LM3909 is an integrated circuit (IC) which will flash a light-emitting diode (LED). Using only two extra components and a battery, the circuit is cheap and has a very low current drain from a 1.5 V cell. The circuit can be used as a novelty flasher, an indicator for a dummy alarm bell box, or it could be attached to a torch so that it could be found easily in the dark!
230V vs LED's
there are many way's to lite up the led's from 230V
yo u can change the capacitor value
for 10mA use 150nF, for 20mA use 300nF.
Attention. This circuit works with life threatening line voltage.
for 10mA use 150nF, for 20mA use 300nF.
How to make a simple L.E.D cube
LED cube is very famous
because of its beauty. Here is the circuit diagram for very simple LED cube. In
this circuit we used 27 white LEDs. The 4020 IC is a
Simple 14 stage binary counter and we have used here 9 outputs. Each output
drives 3 white LEDs in series and we have omitted a dropper resistor as the
chip can
Programmable LED Flasher
uses only one chip and can be useful if a not very precise number of flashes of the LED is needed before reverting to the steady-on state. In fact, connecting D1 Anode to different output pins of the IC, the steady-on state of the LED will be obtained after 2, 4, 8, 16 flashes and so on.
Connecting D1 Anode as shown, the LED will start flashing at about two times per second after power-on and will revert to the steady state after 8 flashes. P1
Fading LEDs
This circuit operates two LED strips in pulsing mode, i.e. one LED strip goes from off state, lights up gradually, then dims gradually, while the other LED strip does the contrary. Each strip can be made up from 2 to 5 LEDs at 9V supply.
4017 CMOS Decade Counter
The CD 4017 is called a COUNTER or DIVIDER or DECADE COUNTER. It is a very handy chip for producing "Running LED effects" etc.
It has 10 outputs. For normal operation, the clock enable and reset should be at ground.
Output "0" goes HIGH on the rise of the first clock cycle.
On the rise of the second clock cycle, output "0" goes LOW and output "1" goes HIGH. This process continues across the ten outputs and cycles to output "0" on the eleventh cycle.The "Carry Out" pin goes LOW when output "5" goes HIGH and goes HIGH when output "0" goes HIGH.
In other words, "Carry Out" is HIGH for outputs 0, 1, 2, 3 and 4. It is LOW when the following outputs are active: 5, 6, 7, 8 and 9.
When RESET (pin 15) is taken HIGH, the chip will make output "0" go HIGH and remain HIGH.
When "Clock Inhibit" (pin 13) is taken HIGH, the counter will FREEZE on the output that is currently HIGH.
7 Segment LED Displays
The 7 segment display is found in many displays such as microwaves, lifts, ovens etc. It consists of 7 LEDs that have been combined into one case to make a convenient device for displaying numbers and some letters.
1.5 Volt LED Flasher
The LED flasher circuit below operate on a single 1.5 volt battery.
Use high brightness LED
