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hii all am currently working on a project which makes use of mma7260 accelerometer I want to find out the vibration frequency using accelerometer to monitor vibrations the hardware used here is accelerometer mma7260 with pic18F452 compiler is mikroC pro for PIC The zero offset voltage out of mma7260 is typically 1.65 Volts, i want to d
hello, please help me to design a system using pic18 microcontroller that base on the current mechatronics product available in the market. my design shuld use interrupt peripheral, whit at least three of the following item: 1) hardware timer/counter 2) analog to digital converter (ADC) 3) LCD 4) relay/valve/ moto
Hello all, Does any body know a good pic18 development kit with: -LED (at least 1) -ADC (at least 2) -RS485 (at least 1) -Programmer included -C compiler and C example code for digital I/O, ADC, RS485, EEPROM, timer included Thanks for reading Look at at MMH-pic18
Hi, pic18 unlike AVR does not have Clear timer on Compare in timer 0, but only in timer 2. T0 is a 16-bit timer (you can configure it for 8-bit if you want). So it counts from 0 to 65535 and then back to 0. I gave 0xF82F to TMR0 (H and L), so that means I preloaded it with 63535. So T0 starts counting (...)
Here are a few tutorials which cover the pic18F timer modules: Introduction to pic18′s timers ? PIC Microcontroller Tutorial Microchip timers:
There are several "timer" tutorials available online as well as documentation concerning the topic: timer0 Tutorial (Part 1) - Microchip timer0 Tutorial (Part 2) -
Hello, I'm working with a pic18 and I want to put this PIC into sleep mode and wake it up every 3 minute. How is that possible? The WDT can put the PIC into sleep only 2.3 seconds. The IDE I'm working in is MikroC Thank you
There is not much in using a timer. You just need to configure the registers correctly. Or you can refer the pic18 reference manual
Hi, I am using pic18F452. I am trying to generate to square waves of different frequencies depending on switch level. I am using timer but the not the timer flag (TMR1IF_bit) as interrupt. Is this possible to generate a pulse without using interrupt. void wave_0() { TMR1L=0x0F; TMR1H=0x0F ; TMR1IF_bit=
Hi everyone. I?m having a problem with interrupts in a pic18F14K50. IRS are not firing and I cannot find what I?m missing here. Interrupts are used for the timer0 and recieving data from the UART. The code was ported from a PIC16F877 and we are moving it to newer technology. I?m using MPLABX v2.10 with XC8 v1.31. Everything else seems to be worki
This free 555 timer design program provides for four operation modes (3 astable, 1 monostable), plus 16 application examples, and timer/component specifications. File size: 253KB
Hi all The below picture represent a block diagram of a DWELL timer. Does anybody know how to design the shematic diagram.(connections) The two D-type flip-flop(4013)are used as edge triggerning device which activate the monostable that it turn activates the astable. Please HELP !!!!!! ./uploads/timer.JPG ______________
Hi friends, this is projekt in Protel 99SE format of timer for driving UV lamp on UV eraser for EPROMS. Regards
Hi to all, Is there anyone having idea/resource about how to implement PLL on a pic18 series micro
Maybe this can help you. PIC17CXXX to pic18CXXX Migration: You can try to look here as well. Migrating Designs from PIC16C74A/74B to pic18C442: PIC16 to pic18 Code Conversion Techniques:
i want to make simple project.i want to make timer counter. but only five minute.five minute later counter is stop. when i press button counter is starting.. 5 minute later, automatic alarm and i press button again and stop sound. or automatic stop (1 minute sound) yes how is making it? i want schematic and pcb file.. SeTRoX from GWPT
Hi friends Please find The timer ratio and pwm caculator for pic micro may be help full for pic programming used regards Fragrance
Hi again this is my projekt for UV Lamp timer. Again in Protel99 SE format. Rgards.
Push the search button, type ucos and 8). You can download the pic18 and MSP430 ports from .
Hi guys I need help. I have designed my first digital schematic with pic18 micro. But i am not sure that it will work. Who can give me advice and/or correct the sch. regards
I have icd1 sch only ,but Iwant debug pic18.
I see ... Maybe you should also try the Hi-Tech pic18 compiler (a 20 day demo is available at their homepage). It is not as easy to handle as IAR but the generated code is a bit smaller (if you have problems to fit your application). Also CCS has a pic18 compiler (similiar to the IAR compiler) but I do not know i
Anybody know the difference of Code Protection CP Bits and Write Protection WRT bits on pic18 devices? I thought CP bits inhibits external RD/WR and WRT inhibits internal WR only. However, I "code protect" CPD=0 and enable Writes WPD=1 on eeprom memory, and the cpu can not Write/read bytes of eeprom memory. I have read the errata sheets and I
Very silly question but have you wired the MCLR pin ? The pic18 model boots from this so if it's floating nothing will happen and the processor wont make it out of reset...
Anybody got a schmatic for a SONY TA-2650 old timer hifi amp ? just the power amp can do !!
Hi guys, I am new in pic micros and I want to know who is the best C compiler for pic18? IAR, HTPICC18 or MCC18? Best regards
I couldn't force Proteus (6.2.sp4) to generate a timer interrupt with ATMega16 (timer 1, CTC mode). Is it a Proteus's bug or mine? :) External interrupts with Digital Clock Generator work fine. Besides, loading of UBROF object files is sometimes strange. For example, my project contains a C main module and an assembler interrupt handler. Pro
:P a nice freeware to design using 555 timer IC.
How can I get a saw tooth wave out of a 555 timer? The desired output frequency is 56khz. Thanks
Hi, can I design a digital intel 8251 timer chip model totally?
someone knows any site with some source code for pic18 in c++ !??! i tried to find over the net, but only find it in asm, im doing some tests with the pic18, but i need more examples to understand well the mode of work :) thnx in advance to all! :)
Hi all, My name is Patrick. This is my first time in this forum. I ve just bought a PIC 16F877. Wow, so exciting, and I wanted to build my own first application. Well, I dont know if it is feasible or not, because I am a newbie in this field! :( Ok, this is the specification: This timer is for marital arts, which allows me to select nu
555 timer designing soft for any circuit:
a 150W switchmode power supply with 555 timer: it cheapest method to design such switch mode power supply.
PICos18 release 1.21 PICos18 - Real-time kernel for pic18 family with sources. Here's a list of processors tested with this release: ----------------------------------------------------- pic18C252 pic18F252 pic18F258 pic18F452 pic18F458 pic18F1220 (...)
Hi all, i would like to find schematics or links for a very small timer, it can be smd, it has to power a coil when the count reaches 0, count from seconds to soming like 10 minutes, have a led display, it can also use a cheap pic, (btw i never did) i live in argentina :( , so like i said it has to be cheaper and the components easy to find... and
I am new to electronics as this is my first project, what I am trying to figure out is from my input source what do I need to solder up to a 556 dual timer to create a 1 sec clock pluse then with that pulse I am going to run that into a 4017 decade counter. Any info would be greatly appreciated, If someone could draw up a small diagrahm showing
Hi I am using AT89S51 can any one tell how to implement watch dog timer with some code example.
Hello, I was wondering if anyone can help me with a project. I need to make a timer that will dim a light according to the moons phases. I have a chart of the days and what percent of light is ommited from the source. I was wondering what I would need to make this. It would be used to mimic the moon phases for a fish tank moonlight. Someone m
Hello~ I'm a college student living in an apartment in a bedroom with no windows. I'd like to set up a lighting system that will simulate the sun rising in the morning and setting in the evening. I'd like a lamp to gradually come on in the morning, and gradually dim out at night. However, I don't want the lamp to stay on when I leave the room
DEar Friends, Anyone out there who know how to create a 20 mins timer circuit(START,STOP & RESET) and Source code explanation. I tryed, but nothing happen... Pls advice me.. pasuS
hi, i have 2 problems here. 1) 555 timer. is 555 timer able to: when something is activated(switch or any thing that trigger) the 555 timer can activate a LED and the LED would blink for 5 seconds and goes off on itself. Any1 can help me on the circuit design/diagram on how can it work? thanks.. [color=gr
hi Good. for PIC microcontrollers if want to make your RTOS premptive select the pic18 architecture because the Stack is editable. Hope u follow the thing regards Gopi
Hai, In timer2 ISR I have a unsigned intiger variable. How I can I equate the lower byte of the variable to TL2 and upper byte to TH2. so that I can treat the variable as timer value I think keil has got a method.not sure. Please suggest Thanks for the reply Sorry for the mistake. my question was totally confusing. Actually on the exte
I have a timer with the following IC: 6260 B annexed is the picture. The customer don't want to change the whole timer because he wants the same P/N end it is not anymore available. The board is from 1987, IC for a rotating timer. If anybody has info about this IC it will be very helpful. Thanks in advance Mandi
Is it possible to design a watchdog program for a BS2pe stamp? The problem is when it is powered up for a long period of time it tends to hang like any microprocessor. Should i add a timer of some sort to help this so it will reset it self from time to time and wake on a certian pulse?
Hi, In one of my 89C51RD2 programs, I am using timer-2 to generate 100?S delay. I used the following formula to calculate values for RCAP2H and RCAP2L register. 89C51RD2 is used in 12-clock mode and timer-2 is in mode-0 i.e 16-bit auto-reload mode. RCAP2H,RCAP2L = 65536 - ((Fosc. * delay) / 12) I want to confirm whether this formula i
I want to make a timer circuit, with 4 7-segment LED as display, with PIC16C54, since no interrupt function in this micro, Anybody can provide some idea for this?
I´m interested in building a timer (based on a PIC or AVR) with more or less six outputs and with around eight steps of time each output. Preferibly with a small keyboard and an LCD. thanks
when a try to download the hex file generated by IAR pic18, i got a CRC error. i've tried different download software like picall and others. both gives CRC error. can anyone help please?