When we build the 10 LEDs running light for a hobby. Often use IC 4017 CMOS-IC.
This really neat chip contains a counter and a decoder circuit.
That can show a single output pin for each count from 0 to 9.
Do not just look at it.
You should learn by doing many circuits using 4017.
CD4017 CMOS-Decade counter/divider
And also use to build all kinds of the timer, LED sequencers and controllers circuits.
Look at the Figure below is a block diagram of inside IC 4017.
The IC 4017 counts with 5 D-type flip-flops.
Decoding and control are by 16 inverters and 15 gates.
The importance Pins look at the table below.
See CD4017 pinout and function of each pin.
1.) Pin 16 is a positive power supply and pin 8 is a ground.
The power supply range of 3 volts to 16 volts and Maximum power supply voltage at pin 1 must not much than 18 volts.
2.) Pin 13 has Clock enabled pins to controls the clock.
When it is “0” logic, the clock is enabled and the counter advances one count for each clock pulse.
When “1” logic, the clock input is stopped, and the counter does nothing even when a clock pulse arrives.
3.) Pin 14 is the clock triggers one count.
The clock pulse must be “clean”.
If they are “noisy” the counter may advance two or more times during each clock pulse.
4.) Pin 15 is the reset pin. Normally, it is “0”.
When made “1”, the counter is reset to “0”.
5.) Pins 1-7 and 9-11 are the decoded output pins.
The active count pin goes high and all others remain low.
6.) Pin 12 is Carry output, for the clock input of an additional counter or an external circuit that the count is complete.
For example, basic circuit using IC-4017
10 LED Flashing using IC-4017
This the circuit diagram of light led flashing with a show of 10 LED. By using integrated number circuit CD4017 perform be Decade Counter/Divider with 10 Decoded Outputs. Which it is integrated digital circuit CMOS then use the power supply about 9VDC. For a signal input continue the circuit can produce general frequency may use IC NE555 all right.
LED Chaser circuit using 555 and 4017
If you would like to learn basic digital, but it is difficult and boring. Let’s try to create a LED chaser circuit. It used in computer games and in many scientific and mathematics applications so is best for a beginner or for kids to learn digital, also my son loves them. Continue Reading
Two way 12 LED running lights using 4017
Two way LED running lights to use for beautiful. Which they are one of 4017 project that uses 12 LED lamps, arranged in 2 rows, each row of 6 LEDs. A green one and a red one, alternatively. use a different color for this. Continue Reading
0-99 counter by IC 4017×2
When you want the counter circuit from 0 to arrive at 99. I think this circuit may on the same wave length you certainly. it uses an IC LM4017 decade counter/divider follow circuit picture. When feeding a signal clock at 14 pins cause the position logic at a pin output. From 0 to 99 for switch S1 perform choose RUN or Reset.
Please see circuit picture will understand increasingly. Almost forget integrated number this circuit, want the fire feeds 3V low arrive at 15V because be IC digital CMOS there.
10 Key Code Lock Switch Circuit
Simple Keycode lock switch circuit using IC-4017 digital uses 10 switch bottom to control output by Relay. No microcontroller is so easier and cheaper! Continue Reading
1 Hz Timebase circuit using IC-4017
When we need a standard digital clock 1 Hz. but we have the input signal is square waveform 10 Hz so need to reduct it lower with digital frequency divider circuit 10 times
I suggest that IC 4017 (Decade Counter / Divider with 10 Decoded)
Bicycle distance meter circuit using 4N26,CD4017
Measure the distance by use bicycle wheel as main tool and normal electronic circuits and so important parts are reed switch detect a magnetic force to CD4017 as Decade counter with 10 decoded outputs IC then connected to Optocoupler 4N26, and display to a frequency counter.
2 Coin toss Game circuits diagram
Press Switch-S1 you will see LED blink alternately. When release S1 LED will stop show Coin or Toss.
Automatic Day Indicator Circuit
This is Automatic day indicator circuit, by LED display each day one by one LED. Which use the principal of light-activated in a day with sun. To set an LDR-sensor and CD4017 acts as drive LED of 7 pcs for 7 days there.
Electronic dice circuit using CD4017
Which looks like real dice. We use only the press switch being thrown. With 6 LED Display.
10 LED roulette circuits using TC4011-LM4017
They use the principles of digital ICs. Create an integrated LED flashing to the rhythm. And then stopped at one of the LED. Enjoy creating a game. And knowledge From digital ICs.
Love Test Game Circuit using 8 LEDs
555 Sound effect generator circuit
This circuit would be a good starting point to composed music for 1000 tracks.
We will use an IC-555 timer and IC-4017 Decade Counter Divider with 10 Decoded as sound effect generator with adjusting tone music with a tempo slow-fast as you want it to VR11. And VR1-VR10 to adjust the tone according to need more than 1000 tone.
LED Dancing light circuit with Music
The main features are running light by changing the voice of the tiny microphone.
In the circuit, we use 4017 to drive 10 LED display. And, LM358 is preamplifier and signal converter. With a few general devices.
Besides 4017 on my website. You can also see more.
Which is better? Which circuit do you like to build?
Have fun with the IC-4017.
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