Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
I am trying to make a frequency counter using a pic 16f882 .
The idea is using TMR1 to measure the pulse period and use it to get the frequency.
I am using a 16 MHz crystal so that TMR1 increases every 250ns ( FOSC/4 and 1:1 Prescale Value )
Here is the code :
I have recently been making a board with a usb connector and FTDI FT232RL.
The problem is that i am using a 2 layer board. I used Saturn PCB Calculator , but the traces have
to be too big .
So , the conundrum is that when i saw the SparkFun USB to Serial Breakout - FT232RL...
Hi , i want to build very accurate frequency counter (0.1Hz accurate ) . The range is from ~15 Hz to ~1.5 KHz.I am using PIC and uC , also i am using flowcode , so if any has any sugestion i would be very happy to hear them.
P.S Sorry for the bad grammar but English is not my native language.
Hi , so i recently started using flowcode 5 , and i want to make a frequency counter/meter.I found a great example but i doesnt seem to work for frequensys bigger then 18 Hz .I need it to work from 1 Hz to around 1KHz . but it seems that i cant make it going.So if there is a flowcode expert...
Hi , because i wasn't able to find an answer i was hoping you can help.I am trying to build 16x2 lcd menu to change the values of "char",but i dont know how.I need to make the menu and browse it and also to change what the buttons are doing after i come into a submenu so i can change the value...
Hi , i found this circuit on the net .. (https://code.google.com/p/ecureverse/wiki/LaunchControl) ...... So my question is how does the hysteresis work , and also how can i make it faster because its little slow for my need , i changed the VR1 with 150K pot, VR3 with 50K adjust VR2 so that is...
Hi, i want to build spark retard unit for my car but i cant find anything on the internet ..... if there is someone out there who can help me i will be very grateful. The point is to delay the spark for no more than 10 degree
Hi, i am planing to build o2 meter for my car using PIC 16FXXX and i don't know how to make it when it reads the voltage in one of the pins (for example RA2) it converts it into the appropriate lambda value.
**broken link removed**
Here is how it is suppose to convert the analog value , but...
Problem with project (gear indicator)
Hi , i am making gear indicator, but i cant make the code work properly... i am new to MicroC so i need some help.I am using 7 segment common cathode display and two buttons ,the buttons are connected to PORTA and the 7segment is connected to PORTB. the...
Hi, i am building a cdi but i cant find one of the parts . Its the btv58 thyristor ,, i've serched in all of the electronic stores in my city and i cant find it, so i decidet to look for its replacement but i couldn't find it either , so if someone can tell me with what i can replace the damn...
Hi , i'm building a tachometer for school and its using 5v pulses, and i need to :
1 count the rising edges in 1/10 of a second
2 multiply the result by 600 so i get the rev/min
3 display the result on a 16x2 lcd
i know how to display the result , but i don't know how to detect and multiply them.
Hi , i need help with the code for my rev counter , since i just started working with PIC's i don't quite know what to write. What i need my PIC to do is :
1. Count the number of incoming pulses in 1/10 second ( number of rev in 1/10 sec.)
2. Multiply that number by 600 (so i can get the number...
hi, i am building a cdi unit ( **broken link removed** ) but i am facing a problem , i can't find PIC16f628 nowhere,all i can find is PIC16f628A-i/p , and in the parts list (**broken link removed** ) PIC16f84AP is presented as replacement ,so can you tell me if it will work with either one ...