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58 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 cascadin
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
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?
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
what is the voltage at the output of cd4017(pin2) before and after claps ?
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
Am working on led moving message everything working good i need help to get more colums using cd4017 or how to 3cd4017 together. thanks
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... :)
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 (...)
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.
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}
One option is to use 4017 counter and configure it as "By-N-Divider" .. see picure below .. Regards, IanP
All time when you have doubts, search for component datasheet: CP0 is the clock, CP1 is the clock enable.
Goto: where you will find several versions of LED sequencers based on the cd4017 counter .. Regard, IanP
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
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
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
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
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
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
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.
yes.. that cd4017 johnson thinking if i can use 4017 only without needing to use PIC
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
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
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
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
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
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
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
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
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
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.
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
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...
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
For the cd4017 I think it's not possible to get that sequence unless you are using separate decoder and counter circuits.
cd4017, driving 10 small Fet's can provide 10 channels of 1/10 duty cycle and costant current on DC bus as required. Fet's, dont need to be of high voltage. If led is of 3.6V then 3.6x40=144V. For remaining 160-144=16V drop, a series resistor can also do the job. Put fet in -ve side with a series resistor. Resister value will be 1/10 times less tha
Up to the point where the transistors can no longer handle the power, you can simply add more diodes and resistors in parallel in the top schematic. By increasing the supply to 12V you can actually add another four LEDs in series with the existing ones in each chain without any other value changes. You will have to increase the value of the series
How to give an initial high signal to cd 4017 ic decade counter, when switching on time only?
Try driving one by one in a loop at speed greater than 100Hz. Average currrent will be for sngle LED. For example drawing power to led from outputs of decade counter like cd4017, driven by a 1Khz clock input.
Maybe you need to have a timer and delay using a LM555+cd4017 70183 johnson counter for your 6sec delay ?
This is simple 12H digital clock,It is simple I am using pic16f84,7Segmant Common Cathode (Red/blue),cd4017 counter,Bc547...Ext... view the
Your explanation is very clear and concise - not inept at all. I wish everyone would post their questions as clearly. Just one suggestion: it will be even better if you break up your post into paragraphs. The problem is identifying the ninth press as a unique event. Right now I can't think of a simple way to do that with the CD4026 alone. One po
Gentlemen, I'm having problem displaying message on my 8x8 dot matrix display. I've modified a small c code rewriting it in C using CCS C compiler. In as far as my hardware is concern, I'm using a pic16f877a, a 74HC595, NPN transistors and a you would note in code, the serial data pin is connected to PIN_D2 and a function has been writte
I think you might run into problems with analog measurements, especially with voltage drift caused by changing temperature. I would go with the 'expander' solution. Use one pin to reset a Johnson counter (cd4017?), another to clock it, that gives you 10 sequenced drive signals to the keys and 4 inputs still unsed to read the keys back so even if
yes, and here are the circuit is mainly composed of pulse generator and a decimal counting circuit. And the multivibrator is formed by NE555 and the peripheral components. After press S1, Q1 is on and PIN 3 of NE555 outputs the pulse. Five output ends of CD4
hello guys i found a circuit below but that doesnt work exactly, i want to make it, like, it should ON/OFF relay 4 times and then stop until i cut power plz can any explain it and make it properly??? or any software simulation???? 93056 here is actual circuit but i want to reduce it to upper one to make it short n
Hi, you coated cd4017 which is a decade counter from the beginning, and I will suggest 4017 chip with and a AND GATES for cascading. kindly follow the link I gave for introduction on this. kindly make the circuit available!
Hello,there can you please help me to think far for implementation of scrolling message with 16f876A,the circuit I have are not compatible with my task so I want a help for changing some codes from the net in MikroC and then use those codes to control the dot matrix as the circuit here shows,the net is a circuit which uses 74LS595 and cd4017;uln280
Hello every body,can anyone of you help me to design an H_Bridge drive with PIC or any circuit like cd4017 for driving H-bridge with N type MOSFET, I realized the circuit but by using PIC16F1827 and MOSFET N Type and referring to Tahmid Blog on tahmidm