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hi, One option is a multi-stage decimal counter driving LED display. Use the two sensors for counter start/stop. Use a known frequency clock for the counter. This link shows a simple 1Hz counter. E
Hi, I have in my mind a programable counter. When i input a digits form keypad (1,2,3,4) , it's mean i input "1234". the counter (i resolved that part), start (after i input "#" from keypad) and stop at designated number like "1234". i try with "FloatToStr" but, i'm not sure it's work! any help? thank you! P.S. i'm rookie in mikroc!
Hi, You could use programmable logic as single chip solution. CPLD (Or older GAL, PAL...) You could use a microcontroller as single chip solution. You could use two HC390. You coud use ICM7217 as 4 digit decimal counter with multiplexed BCD outputs (+ 7 segment LED display controller) ... Klaus
Hi please help me , i want to display 0-19 using 74192 with 7447 . I don't know how to reset the 74192 back to 0 when it reach 19
learn from here select which controller you use and used "pic programming in C & the first example i've tried to compile has errors then on mikroe forum one of the mikroE team replied to a message tht i've posted about the examp
The following video shows 3-digit 7-segment digital counter using PIC12F1822, this counter counts from 0 to 999. When the button which is connected to RA3 pressed the number will be
HI i have a pic16F628 that i burned out the pin 3 data input used in the 5 digit frequency counter sold on the web i read the chip and it say's that the chip is not protected. i need to program a new chip so i need to get the data from it to burn a new one i am using pic basic pro . when i do a read all i get is the chip info how do i get the da
Hi, what frequency resolution do you want for your frequency counter? in other words: You have a 4 digit display. but "15" needs only two digits and "200" needs only 3 digits. Do you want it to show "0200" Hz or "200.0" Hz? **** Technically you need a signal gating with exact timing. 1.000 seconds for example. As long (...)
Try these
Why this PIC18F45K22 based frequency counter not working? I am using PIC18F45K22 and 20 MHz crystal. I am testing in Proteus and also hardware but in Proteus it gives 216 Hz for 1500 Hz and in hardware it is not at all working. I am using T0CKI pin to read the input pulses. I think all registers are configured properly. I also lit an LED in hard
A long time ago (in 1974 :-?) I've used such Nixie tubes (type Z560M, made in DDR), with a SN74142 from Texas (a decimal counter and high-voltage driver). The anode voltage was around +150v, without any current limiting resistor. It was a 6-digit (cascaded) frequency counter for max. 20 MHz but - using different SPI-like interfaces - you can
I hope this Helps - - - Updated - - - I hope this
You can always start by writing the 3-digit counter and verify that it is working. If it counts correctly from 000 to 999. Then write the UART communication part to receive text from another mcu. You can either test it with proteus sim using the "virtual terminal" to make sure that it is working properly by sending the command text to it to
If you show your schematic in PNG format, you'll probably get some help. Not everyone has Proteus 8 and many dont use Proteus at all. As for me, I am still using ver 7.8 SP2. Allen
PORTA=%11011111 This takes pin A5 low. digit zero common is on A0, so I would expect:PORTA=%11111110 (I assume that your BASIC compiler accepts binary numbers with bit 0 last, but I am not familiar with that compiler) You are probably over-driving the PIC outputs. Properly designed circuits have current limiting
Hello there, I have a FPGA board which has 4 seven segment elements having all the elements connected in parallel ie. element 'a' of all four units are in parallel and so on. I wanted to display four distinct characters in the four units viz 'F.P.g.A.'. Is there any way to do so. I tried the following way: Described a process A which is
Just use a mechanical counter that is triggered like a relay. Or get something like this :- Frank
I ended up doing the same thing for my homebrew 6-digit frequency counter. A lot of soldering. Innumerable wires. The two counter IC's can each drive a 3 digit display. But my local Radio Shack only had 2 digit displays. I purchased three of them. Then I had to slice through copper traces on the middle (...)
1. What type of unit get for counting is potential free or any other 2. How u set Preset count value 3. What bout power supply 4. Is any relay or Buzzer output after Count complete 5. Is project use for commercial level or Project level 6. What type Enclosure u plan Answer this
Hi all , I needed a small 5 digit LCD but I couldn't find it . I bought a counter (like picture below) and opened it . I want to drive the LCD but I don't know how to do it . I attached the counter and it's internal board . the Via in internal board is connected to the LCD . please help me .
To start with, I am using 7-segment LED display common cathode. You need common anode display not common cathode. datasheet of 74LS47. and its connection
There's an Australian hobbyist magazine called "Silicon Chip" that ran such a project a few months back - have a look at: Item 6 in the table of contents is part 1 of their "2.5 GHz 12 digit frequency counter" using a PIC16F877 and 7 segment displays. Yes I
I did my Fisrt FPGA project, that is a free running 4 digit counter, Is working like a charm but I think is to much for to litle. Is my design ok, ? Have any way to optimize for less resource. I'm a newby on FPGA, but a experienced microprocessor programer, I'm afraid to use old stuff that is not the best for Fpga world. Please coment a
Hi every one and thanks for looking at my post ;-) ive got a Decade counter circuit which is ok ive added a start / stop and a reset button to the diagaram - but what i want to be able to do is the following 1) Add a 2nd set of 7 digit display's which i have done under livewire and they power up but i want them to show the high count ie if
Here is my recent project using is pretty simple and useful for Arduino beginners. 83767 Single digit Decimal counter using Arduino You cam find the schematic and code in my Electronics blog -
Use this for sensing pulse : Output from EasyPulse connect to 3-digit counter circuit with 89C51/C52. You can replace TCRT1000 with L-53P3C 5mm phototransistor or some other, and MCP6004 can be replaced with LM324D, for TX led I use red 5mm high bright 15000mcd, and all works fine. This circ
hey everyone. i'm trying to eventually build a six digit counter for common cathode seven segment leds. I started off with an example that did two just fine. but everytime I try to add any more to it it refuses to work. I copied an example from a post on this site on how to multiplex them. but still no luck. any ideas? unsig
Hi Masters, I have written a code for 4 digit 7Seg display counter. There is some error in my code, when i simulate in Proteus 4th, 3rd and 2nd display is not showing Zero (0). Please help. Code: #include #define uchar unsigned char #define uint unsigned int sbit clear = P3^4; uchar code DSY_CODE= { 0xc0,0xf
i wish to design counter which can count upto both integer and integer +decimal part like for 3,6,7.2, 11.87,etc? What means "both"? What is the counter increment in both cases?
I posted a 3-digit BCD counter code in this it's for a Spartan-3e kit, it might help you in coding. And try commenting your code as it helps others analyze it. Regards...
Below is the code for a 3-digit BCD-counter (Binary Coded Decimal) I implemented while studying Verilog. You have to change the compare values (I commented on the code) to make it count like a clock (i.e. up to 60 instead of 100) and you can also add more digits for a full scale clock. You can access the driver for the lcd here: [URL="www.e
I have 8 segment displays, left four of them would be representing voltage and right four would be displaying current. i have made a prototype board to check it. there are two values i.e. current and voltage but all displays are multiplexed togeather. now i want to interface a rotary encoder and when i push a button then a digit starts to blink and
I made a plastic shuffle board table few years ago. For my updating, this week been running 12v system LED's in the support structure and I want to add a point counter in a tree form. Yellow (5) on the bottom and blue/red (4 each). Scoring would go like this, yellow in five digit increments, blue/red would light up for 6,11,15,20 and stay lit til
Can you clarify if the LDC824 use also TC5032 six digit decade counter?
That’s not so complicated, but you need to provide the code for the new 2 digit display… - - - Updated - - - :-D See for example:
hello to everyone,,, i have a problem in designing the pcb layout of a 2 digit 7segment display counter using 74LS47 and 74LS192 IC's,,,,,, can anyone help in designing it's pcb layout,,,,,,, thank you very much ^_^
Four-digit frequency counter (schematic: )
You can build it with only 2 x MC14553 + 1 x MC14543, look at inside the MC14553 datasheet.
You should also reset the counter at the start of each interrupt because if you don't it will continue to count up to 65535 // Timer 1 output compare A interrupt service routine interrupt void timer1_compa_isr(void) { TCNT1=0; // reset counter 1 if(Sec==59)
here is picture of my LG remote with keys press 0 , 1 , to , 9 . 59941599495994859947599465994559944599435994259950[/
check out my website: All About VHDL Codes, PCB Designing and AVR heres my rtc project: All About VHDL Codes, PCB Designing and AVR: RTC on FPGA with manual set synthesizeble VHDL code.
Hi everyone I was told to design a counter that will counter the rotation of a car engine in one second. An 8051 microcontroller is to act as the counter. signals from a function generator will act as the signal from the car engine. the results is to be displayed on a 4 digit seven segment. I have finished my hardware but I (...)
Im really confused It's simple: ... 1 Hz/W, then a gate time of 1 s achieves a display in W 1 W/Hz = 1Ws (energy). If you count (integrate) it over 1s and display the count, you display Ws/s = W , which is power. If you simply let the counter run and display its content, you
can someone help me on how to make down counter on 7-segment? the counter must count from 99 to 00.. thanks :)
a 8051 or a Pic microcontroller will solve ur problem.Use a 2 dimensional arrray for the purpose.
This may be what you have in mind. . Just expand to 4 devices. It's easier to cascade 74LS191 since it has RIPPLE CARRY OUT and DISPLAY BLANKING features.
Hello everyone, I made a counter with 3 sectional of the schematic in attachments.On schematic is another pic, and I use the 16f76, 4MHz oscilator.Display with common cathode. In the Basic, I got the written code and tried to adjust it to end,but i do not now how and i ask for help! The counter is conceived to work like this: When the timer turns
read this article, it may help you to design the counter
hi :D i am trying create 3 digit counter 7 segment. Using pic and basic language my question why 7segment brightness can not same. my program i deploy from sample program. any one can help me? thx in advance original program Dim digit As Byte 'input variable for GETMASK subroutine Dim digit1 As Byte 'current (...)
you can create a 2 digit BCD counter by using two 4 bit counters and some logic gates.The main idea is that when the count in the first(LSB) counter reaches the value "1001"( 9 in decimal) it is reset to zero and the second(MSB) counter is incremented by '1'. I am not sure about why you need a 4:1 MUX for (...)