cd4017 |
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64 Threads found on edaboard.com: cd4017
hi everyone
i biult a single character 5x7 LED display with a single cd4017 counter and it worked perfectly, but when i expanded the display to an 8 character 5x7 display(having 40 columns) and cascaced 5 counters there was a problem.the counters didnot count to the end they always stoped at a certain point.i made use of the cascading schematic in
PC Programming and Interfacing :: 05.05.2007 17:51 :: Sildel :: Replies: 1 :: Views: 3313
hi everyone
i biult a single character 5x7 LED display with a single cd4017 counter and it worked perfectly, but when i expanded the display to an 8 character 5x7 display(having 40 columns) and cascaced 5 counters there was a problem.the counters didnot count to the end they always stoped at a certain point.i made use of the cascadi
Microcontrollers :: 10.05.2007 04:02 :: fazan83 :: Replies: 2 :: Views: 8916
hy everyone, i need a lil help with the cd4017. I can't find in any library a cd4017 that contains both Vdd and Vss, i can only find Vdd ones. Can someone tell me a librabry that contains it or may the cd4017 can be modified to contain also Vss?
Microcontrollers :: 22.11.2009 18:52 :: stefangs :: Replies: 2 :: Views: 788
I can't get a cd4017 to count properly. I made a bouncless switch out of a couple of inverters for a clock. There is a 5 sec pulse for reset on pin 15 and pin 13 is ground. It resets to high on the 0 output but after that everything is random including the carry output. It clocks on both the rising and falling edge of the clock. I handle the chips
Hobby Circuits and Small Projects Problems :: 30.01.2010 01:41 :: FlaBoy :: Replies: 1 :: Views: 1699
i do not want to use 555 as a switche. actually i want to control the blinking rate of leds. like cd4017 ic's blinking rate of leds are controlled by ne555 ic.
that is my motto to make such circuit with the help of at89c2051.
is any one can help me out?
the ne555 will attached with at89c2051 in pin no p3.7
what is the asm code for it
Microcontrollers :: 03.06.2010 08:15 :: rohansinha2000 :: Replies: 9 :: Views: 2031
what is the voltage at the output of cd4017(pin2) before and after claps ?
Hobby Circuits and Small Projects Problems :: 17.02.2011 07:00 :: cameo_2007 :: Replies: 8 :: Views: 1341
hi
cd4017 is a decimal counter, use any output of pic write a time delay loop and use that as clock for cd4017, if you wish use a switch to pause the clock.
you do not have to use the reset pin unless implementing divide by less than 10.
if not using reset pin tie it to ground also tie the clock enable to ground.
Microcontrollers :: 17.02.2011 13:16 :: theta :: Replies: 4 :: Views: 1885
I am working on a circuit that will control the selections on a arcade pcb. Basically I have a 6-in-1 arcade pcb switcher (a board that holds 6 individual jamma boards), when you press a button on a wireless remote it switches to the selected board. The wireless interface to the pcb board is very simple and has already been figured out by someone e
Analog IC Design and Layout :: 19.12.2012 07:49 :: karaandnick :: Replies: 0 :: Views: 155
Bogdan,
Thanks, I realize that simple things like this will sometimes help a lot. However, I feel that the state waveforms is as simple as single shot multivibrator, but the real challenge is how to update 8 different variable out of a single timer base on intterupt. Your next advices are welcome !
Fragrance,
Thanks for your attachment which
Microcontrollers :: 27.06.2003 17:22 :: jusman :: Replies: 5 :: Views: 1359
Has anyone used a cd4017 to cycle along the matrix columns using a clock signal from a PIC?
Microcontrollers :: 05.10.2006 02:39 :: Los Frijoles :: Replies: 695 :: Views: 370719
why not wire an cd4017 to be configured with two outputs only... then wire each output to an NPN transistor, w/c in turn turns a RELAY on and off... :)
Hobby Circuits and Small Projects Problems :: 08.11.2004 20:17 :: rx5 :: Replies: 3 :: Views: 2275
hi!
could anybody help me on a diagram bout a sequential output of 20 or more??
clock input is 1 Hz, the problem is I can make a maximum of 10 sequencial outputs only(using cd4017).. can cd4017 be cascaded for more outputs???
like after the 10th output, it would pass to the 2nd cd4017s 1st output and the 1st (...)
Hobby Circuits and Small Projects Problems :: 08.12.2004 19:35 :: rx5 :: Replies: 1 :: Views: 1951
You may use cd4017 chip and connect outputs 1, 2, 3 and 4 throught diodes together for driving first fet and outputs 6, 7, 8 and 9 the same way to other fet. Outputs 5 and 10 leave nonconnected. In this way you will get two nonoverlaping stearing pulses for fet's. Clock for 4017 must be 10 times the output frequency.
Electronic Elementary Questions :: 15.05.2005 11:08 :: Borber :: Replies: 8 :: Views: 1292
hai all,
now i am build a dot matrix which its injected by audio. for the audio I use Fm modulation (carrier frequency = 50khz)and for the wave i choose square instead of sine. i connect the square audio to clock pin of cd4017(decade counter) and the output to every row of my dot matrix. so, the idea is every change of the square wave will change
Electronic Elementary Questions :: 01.01.2006 23:47 :: Elits :: Replies: 1 :: Views: 744
personaly i would stick to using either a pic c5xx series small 8 pin micro if you need adjustable clock
and for fixed
use a 1Khz Xtal and a /10 counter {cd4017}
Electronic Elementary Questions :: 28.08.2006 12:40 :: VSMVDD :: Replies: 11 :: Views: 5473
One option is to use 4017 counter and configure it as "By-N-Divider" .. see picure below ..
Regards,
IanP
Analog Circuit Design :: 06.09.2006 05:05 :: IanP :: Replies: 4 :: Views: 3245
All time when you have doubts, search for component datasheet:
CP0 is the clock, CP1 is the clock enable.
Electronic Elementary Questions :: 11.11.2006 19:45 :: melc :: Replies: 19 :: Views: 851
You can try cd4017 to make a divide by 3 counter, and then use CD4013 to make the pulse 50% duty.
nguyennam
Analog Circuit Design :: 09.02.2007 16:16 :: nguyennam :: Replies: 14 :: Views: 3236
Goto:
where you will find several versions of LED sequencers based on the cd4017 counter ..
Regard,
IanP
Hobby Circuits and Small Projects Problems :: 02.06.2007 04:49 :: IanP :: Replies: 11 :: Views: 4887
hi to all
first of all i like this board. :)
i need a high frequency divider i want to divide 1ghz to 1mhz or 500khz.
may be u peopls not understand my post so i clear it as my words.
i can use cd4017 for divide upto 10x but i know cd4017 is not working at 1ghz
so simply i need like this IC which work at high frequency..
thanks in ad
Digital Signal Processing :: 07.06.2007 22:07 :: Shehrose :: Replies: 4 :: Views: 1239
HI !
I am working on moving message display using At89c52 ,74HC154,cd4017,
BEL 157,and 7 rows x 50 colums ie 10 characters.
pl any one have ASM Or 'C' code for above project ,pl send on my E-mail
kiran_ver@yahoo.co.in
Thanks
Kiran
Microcontrollers :: 16.07.2007 16:50 :: KIRAN patil :: Replies: 2 :: Views: 2457
Hi all...
regarding logic level(+5V) signals, Its easy(for me) to divide a certain clock freq using the cd4017.... DIVIDE by 10, or 9 etc etc counter.. But I have NO idea how to MULTIPLY.. say x60..... sample: I input 1Hz and the output would be exactly 60Hz (1 x 60).....
just a small range..about 5Hz - 200Hz...
Anyone got ideas HO
Hobby Circuits and Small Projects Problems :: 05.01.2008 10:04 :: rx5 :: Replies: 5 :: Views: 1511
hi, folks.
I would like to know why the resistor for the base of 2n3053 is 330 ohms
how do we calculater it ?
Here is what I think:
in a transistor
ic=ie
hfe = ic/ib
ib= ic/hfe
since ie approximately equals to ic
let ie be 300ma and hfe be 100
ib = ie( 300ma)/hfe( 100)=3ma
let's assume pin 1,2,3,4,5,,7 and 10 output of cd4017 = 3
Electronic Elementary Questions :: 12.07.2008 04:28 :: simonwai999 :: Replies: 11 :: Views: 1881
Hello i_sen86
I program pic's so I can't help you with the programming, but I have made a couple of scrolling message signs. one was with 74hc505's and the others were made with cascading cd4017's. When I do it again I will use the 4017's there cheaper and the program is easier to write.
gogo
Microcontrollers :: 13.03.2009 06:00 :: gogo2520 :: Replies: 3 :: Views: 772
Hello sanjaya75s
Heres a site that explains how the programming works.
I built a bigger one using 74hc595 chip and a pic16F628a. It worked but I think my next one I will use cd4017's instead. I already cascaded them so I don't think it will be a problem expanding the talking c
Microcontrollers :: 13.03.2009 05:52 :: gogo2520 :: Replies: 1 :: Views: 1210
Hello. I need to build a circuit to do as follows:
press switch ( ie press and release)
*** initiate cycle
1) apply 6v momentarily to operate / drive a solenoid to one side
2) time delay for say 15 to 30sec
3) apply 6v momentarily in reverse polarity (ie + - to -+) to drive solenoid back.....
*** end cycle
4)
Hobby Circuits and Small Projects Problems :: 04.10.2009 08:35 :: boseji :: Replies: 3 :: Views: 2187
Instead of using PIC micro for such simple design, Just go ahead with a 10 channel chaser design with 555 and cd4017 and connect 5 led's per channel. You can also decrease the channel outputs by connecting the reset pin 15 to respective outputs where you want the count to reset. Have a look at the 10 channel LED chaser in the given link below. Chee
Microcontrollers :: 15.10.2009 14:57 :: pranam77 :: Replies: 17 :: Views: 5165
Hi everyone, I am a newbie to PIC programming, and I want to use a PIC16F877A the a 4MHz crystal oscillator to control a 5x7 scrolling Message LED Display board.
I already have by board and circuit design with components already soldered on the board. My main problem is that I am trying to code a 1 seconds delay for testing my display board to f
Microcontrollers :: 20.11.2009 12:24 :: babinton :: Replies: 3 :: Views: 2102
hi
u can start with circuit like this . first stage is fast comparator as zero cross detector the output of that drive jonson counter (cd4017) the output of counter
drive analoge switch to capture sample
for ur project need
sample at 650hz u must use 3*(cd4017) to get divide 1000 .. R3&C1 drive
schmit trigger to get fine tune for output sam
Analog Circuit Design :: 13.12.2009 22:30 :: nashwan :: Replies: 8 :: Views: 559
If I understand correctly about your requirement, it can easily be accomplished by using a cd4017 ripple counter, NE555 timer IC and and array of diodes.
The only drawback in my design is that there are no breaks between the R,R,R and G,G,G so it lamp is on for one continuous long duration.
Hobby Circuits and Small Projects Problems :: 17.12.2009 01:54 :: bongkk :: Replies: 1 :: Views: 1239
yes.. that cd4017 johnson thinking if i can use 4017 only without needing to use PIC
PC Programming and Interfacing :: 21.01.2010 07:02 :: mayena_19 :: Replies: 5 :: Views: 961
Hi dear sir,
I really don't undersdtand what you want to do and to test.
You want to test XOR door? I'm right?
How many pins have your XOR circuit?
I suppose you need to test this kind of ICs without microcontroller.
Depending to the number of inputs, you should use a binary counter connected to each inputs of the XOR door. CD4040
Electronic Elementary Questions :: 12.04.2010 22:01 :: Pitbuell94 :: Replies: 2 :: Views: 387
If you just need to divide the 500Hz to 50Hz using HW.. try using a cd4017 based circuit. It is a divide by 10 ring counter.
Professional Hardware and Electronics Design :: 08.07.2010 23:27 :: deepuj :: Replies: 10 :: Views: 2220
Hello,
The o/p of a Schmitt trigger will be the clock of a 4017 Decade counter.
But I'm worried that this may affect my calculations of R (in the Schmitt trigger) and how to keep the High/Low voltage compatible! Does a simple voltage divider work, a buffer, ..?
What should I look for exactly in the datasheet? I was recommended
Electronic Elementary Questions :: 13.05.2010 14:59 :: Rajguru :: Replies: 7 :: Views: 1745
Try looking up the datasheet for cd4017 :
Here is a simple reference schematic:
The output frequency on any output pin will be directly proportional to the input clock frequency (from the 555 timer). The output fr
Professional Hardware and Electronics Design :: 26.06.2010 05:24 :: deepuj :: Replies: 2 :: Views: 1341
iam working on the project infrared remote control car.i completed it by running the car in forward as well as reverse direction .
i modified in this circuit that after cd4017 ic i take 2 outputs and fed to L293D ic to drive motor instead of a transistorBD139 driving a motor here.
so,when i press a button(any on t.v.remote it moves forward and fo
Electronic Elementary Questions :: 14.09.2010 15:26 :: s.k. sundar :: Replies: 4 :: Views: 840
Of course it's possible. Before IC came up, even digital computer logic circuits have been built with discrete transistors (and with vacuum tubes before them). Everything can be based on a cross-coupled two transistor flip-flop circuit and diode-transistor logic gates.
P.S.: It's most likely easier to implement a 10 stage ring counter than the o
Electronic Elementary Questions :: 20.09.2010 13:08 :: FvM :: Replies: 4 :: Views: 1134
if you want any counter like a 0-15 type to count to 10
simply route the output 9 bin pin to the reset pin
use a diode if needed
then when it gets to 9bin {state 10} then it resets to 0
basis of a pll
10 = 1010 bin
so you need a 4 input or gate also
or use some diode matrix to trigger a reset {mr pin}
cd4017 rings a better bel
Electronic Elementary Questions :: 02.10.2010 02:20 :: VSMVDD :: Replies: 3 :: Views: 1495
I have been working extremely hard to come up with a heartbeat Simulator that can generate an ECG waveform. I almost tried everything from timer LM555 to cd4017, and UJTs anything I?ve heard of. Please if anyone has an idea I can try the due time almost up
THANK YOU ALL
Electromagnetic Design and Simulation :: 05.11.2010 22:23 :: Dino1400 :: Replies: 3 :: Views: 1649
I was hoping to use the 555s that I have on hand, but I do like the sound of "simpler solution"!
Where might I find such a circuit?
I suggest that you use a 4017 decade counter.
You could use outputs 1, 3 & 5 to turn on the beep. You would design it to await a start at output 0.
After it is started and ha
Hobby Circuits and Small Projects Problems :: 15.12.2010 04:11 :: ljcox :: Replies: 90 :: Views: 4061
build with CMOS 4047 that is the main component of this small voltage converter that transforms a 12V DC into 220V AC. 4047 is used as a astable mutivibrator, at pins 10 and 11 will have a symmetrical rectangular signal wich is amplified b 2 Darlington transistors and finally reach the secondary coil of mains transformer ( 2x10V / 60VA ).
[url=ht
Power Electronics :: 19.12.2010 04:15 :: ckshivaram :: Replies: 7 :: Views: 1617
I Have built 8x16 message bord sucessfully,it is working fine with pic16f84a
but i can make it for 8x24 led.
please help me to modefi this coad.
PROCESSOR PIC16F84A
INCLUDE
RADIX HEX
CBLOCK 20h
;*******************************
; 16x8 LED Charactor Moving
; Pic16F84A
;Shifting Led's using two cd4017
;Written By 4Chamli Pri
Microcontrollers :: 26.12.2010 08:58 :: xpanuwa :: Replies: 0 :: Views: 447
The Decade counter cd4017 can be cascaded to get more sequencial outputs which light one at a time. Audio guru had posted this circuit in electrotech. Thanks guru. Cheers
Electronic Elementary Questions :: 21.01.2011 09:51 :: pranam77 :: Replies: 9 :: Views: 1066
I need to multiplex 8 7-segment displays + some leds (device panel). The problem is that i've got very limited number of data pins available for display.
Displays which i'm using are common anode, single display dies (bought them in large volume for an attractive price). I want to drive segments with serial-in-parralell-out registers 74hc164. Th
Microcontrollers :: 04.02.2011 02:13 :: poorchava :: Replies: 5 :: Views: 877
i need circuit for single push button switch to control a relay
i use a circuit using cd4017 but it not working
pls help me thanks
Hobby Circuits and Small Projects Problems :: 16.02.2011 04:48 :: thannara123 :: Replies: 9 :: Views: 2884
Hello,
The circuit can be divided in to 4 parts for easy understanding
1) Monostable (IC 555)
2) Decade counter (IC cd4017)
3) Astable (IC 555)
4) Driving section (Transistors)
Theme is to adjust the on/off rate of 555 timer (IC3) and correspondingly getting the different speeds.
IC1 generates clock pulse or trigger when push button is pressed
IC2
Electronic Elementary Questions :: 28.02.2011 16:19 :: vinoth8051 :: Replies: 1 :: Views: 375
At first take a look at the datasheet of 555 timer(and study different mode of operation of 555 timer IC) and decade counter cd4017
load driver transistor drives the motor based on the PWM generated by 555 timer IC...
Analog Circuit Design :: 13.03.2011 14:40 :: jerkymotion :: Replies: 4 :: Views: 265
do you made any hardware setup for this? Do you have an led dotmatrix display connected to a ring counter like cd4017 and a microcontroller say PIC16F877A?
Pls tell me about your hardware setup so that i could provide you the C program for your setup.
Microcontrollers :: 01.05.2011 09:04 :: vinodstanur :: Replies: 10 :: Views: 1452
It is recommended to tie the LM555 pin 4 to pin 8 and connect a capacitor (100nF) between pin 5 and pin 1. Doing this will make it more reliable although it should work without them.
It is also a good idea to connect a capacitor (10uF) across the + and - supply rails for the same reason.
You will only get low LED brightness as the cd4017 is not int
Hobby Circuits and Small Projects Problems :: 16.06.2011 17:54 :: betwixt :: Replies: 9 :: Views: 1005
Hey who can help me to sort out the problem of automatic school bell with cd4017 and ne 555.
I tried to realize it but it is not working.
Someone tried also!! plz help
Electronic Elementary Questions :: 17.08.2011 10:42 :: john120 :: Replies: 6 :: Views: 561
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