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    Re: Au-full quiet out here lately...

    It gets quiet this time of year every year. Vacations?
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    Re: Programmer help

    I'm sorry. I don't understand what you mean by new device. I use MPLAB with the Picstart Plus. Picstart Plus was discontinued. Last year brand new ones were on ebay for $50. Recently the only ones I...
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    Re: Programmer help

    Do what I do. I have a Picstart Plus for parallel port and use a parallel to serial adapter. Works fine.
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    Re: isd4003 arll that matterr

    Charlie I'm running the circuit at 3V and getting about 1/2 that on the collector, class A. The amp does work. It increases the sensitivity and picks up a normal voice about 10 inches away from the...
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    Re: isd4003 arll that matterr

    I forgot. There's a 10K to B+ on the collector of the transistor.
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    488

    Re: isd4003 arll that matterr

    That didn't work Trying to attach again PDF file.
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    Re: isd4003 arll that matterr

    Thanks guys. I am attempting to attach the schematic of what I'm doing (never did this before). Like I said, any attempt to record has a loud ticking in the back round. Shorting the 1K in the mic...
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    isd4003 arll that matterr

    I need to record voice in an ISD4003. Using the audio input with a condenser mic isn't sensitive enough. I added a 1 transistor preamp which works well but it now has a ticking noise. Filtercaps...
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    Re: Pic 12F675... No Blinky

    Try LED VAR GPIO.0. VAR and the full pin name always worked for me.
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    Re: For ALL of you in the STATES

    It's hot here in New York too Dave.
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    Re: SLEEP and NAP commands

    I always leave watchdog timer on. I use nap 0 to reduce current drain.

    start:
    nap 0
    if porta.1 = 1 then run
    goto start

    run:
    xxxxxxxxxxxxxxxxxx
  12. Thread: amp hours

    by peterdeco1
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    1,540

    amp hours

    Hello everyone. I have a question that is confusing to me. If I draw 1 amp from a battery for 1 second and do this 2 times per minute, how many amp hours am I draining it? I'm trying to figure out...
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    Re: quick question 12F683

    Thank you everyone. I found a spot that goes up to a full 3V when the circuit is activated but is a difficult connection to make. I'm going to use the ADC solution as this connection is much faster...
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    Re: quick question 12F683

    Unfortunately the circuit board is already manufactured with a pull down resistor network. The switch that activates the circuit which I'm trying to detect goes to ground when pushed. True, I can use...
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    Re: quick question 12F683

    Thank you Henrik. I need to find another way to detect when the circuit is active.
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    quick question 12F683

    Hello all. I'm running a 12F683 at 3.3V. One of the GPIO's is connected to a place in a circuit that rises to only 1.2V when it's activated. Is this enough voltage to reliably support the code "if...
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    quick question

    I have 4 identical circuits. If I put at the top of each program:

    X var word
    pause x

    and power up all 4 at the same time, will X be a random number on each of them? The idea here is to make...
  18. Re: How to set HPWM to generate 38khz signal? (16F870)

    Hello. A while back I used this routine to generate 38KHZ with a 12F675 running at 4MHZ.

    STARTBIT:
    High GPIO.4 'GETTING 38KHZ WITH THIS SUBROUTINE
    High GPIO.4
    Low GPIO.4
    Low GPIO.4

    LET X =...
  19. Re: Help Choosing the correct PIC for 2 Channel PWM

    I don't think you will be able to generate 2 distinct tones. From the PBP manual:

    Frequency is the desired frequency of the PWM signal. On devices
    with 2 channels, the Frequency must be the same...
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    Re: Monitor supply voltage of chip?

    I recently made a low battery warning for a 12V lead acid battery using a 12F675. B+ 12V powers the PIC through a 3.3V LDO regulator.The same B+ 12V goes to the ADC pin through a 220K resistor. The...
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    Re: 16F819 config for A/D

    Hi. I've used this routine many times without a problem Try it.

    OSCCON = $70 '8mhz
    adcon1 = 7 'set inputs to all digital - adcin command will convert individual input to analog
    @ DEVICE...
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    Re: Soft-start for mains LEDs?

    I'm sorry I wasn't clear in my original post. Of course I didn't do the brightness thing with an LED replacement bulb. It was to slowly start an AC motor but the same process would work with AC...
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    Re: Soft-start for mains LEDs?

    Yes. In about 1980 a buddy of mine had a digital LED wristwatch, LED calculators and alarm clocks were becoming popular. Google it. LED's were around since the 70's.
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    Re: Soft-start for mains LEDs?

    Sorry Anand. This was at least 20 years ago. All I remember is building a dimmer circuit and modifying the section that used the potentiometer to control the brightness. If I had to do it all over...
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    Re: Soft-start for mains LEDs?

    Hi Anand. I did this so long ago I forgot how. But I remember using a triac and diac configured as a lamp dimmer. It started as dim and gradually ramped up by charging a capacitor. I also remember...
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