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  1. Replies
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    Re: isd4003 arll that matterr

    The transistor amplifier is not going to work. Bias points are wrong, currents are way too low, and a few other errors. If you don't know how to bias the transistor, Google is your friend. Here, for...
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    Re: Converting dec to hex, no built-in support?

    You are completely missing the point, so let me take a crack at it. Numbers always have the same value. The box of screws on my workbench always has the same number of screws in it, whether I choose...
  3. Re: Pic 12F675... Pulling GPIO.3 Low resets program

    The MCLR pin is used for programming. Once you disable it, programming gets a bit trickier. You need to be sure VPP is powered before VDD, and there is nothing in your circuit to prevent VPP from...
  4. Re: Pic 12F675... Pulling GPIO.3 Low resets program

    Or simpler yet, browse to the 12F675.INC file in the PBP folder and change the config lines like this



    ;****************************************************************
    ;* 12F675.INC ...
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    Re: How to control the Si5351 pls ?

    Hi Richard,
    Thanks for digging into this. In the end, I decided to go a different direction and purchased a Raspberry Pi zero. It's about the same price as a high end PIC, but far more powerful. I...
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    Re: How to control the Si5351 pls ?

    Nice - I love how we are all polite to each other in the forum.
  7. Replies
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    4,058

    Re: How to control the Si5351 pls ?

    Francois - I did, and have a really good idea how to control it. I can't actually imaging doing anything anymore without online research.
    However, the calculations require floating point math, which...
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    Re: How to control the Si5351 pls ?

    The silence remains deafening :-)
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    3,171

    Re: CONFIG issues with 18F26K22

    Tumbleweed - You're right - I should have looked it up instead of going by memory.
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    Re: CONFIG issues with 18F26K22

    If you are really using a crystal then you need FOSC = LP (or the correct setting for a low power crystal with your device.)
    Your file is set for a medium power high speed resonator
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    Re: Serial to WiFi Wifi to virtual com port

    Just curious - why don't they meet your need?
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    5,547

    Re: PWM and audio noise

    What are you using to connect to the jacks, how far apart are they, what does the board layout looks like, is there a ground plane, is there a decoupling cap on the PIC, how does the 9V ground relate...
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    5,547

    Re: PWM and audio noise

    This is always caused by either the design or layout. Post the schematic and layout if you really want an answer.
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    Re: Unable to Open Include File

    Also I've found the file has to be in the same sub-directory as the program source code. Although I'm told you can specify the complete path, I've never tried that.
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    Re: Unable to Open Include File

    It's extremely unlikely to be your operating system. The most likely cause is a minor typo in the file name, or path. ( a"," instead of a "." for example can be hard to spot. Other than that, it's...
  16. Thread: Rs232 Hex Char

    by Charlie
    Replies
    3
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    1,479

    Re: Rs232 Hex Char

    For starters, most of these are either control codes (which don't print anything), or codes that don't exist in ASCII at all (anything bigger than $7F). The only exception is $40 which is "@" . Are...
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    Re: Safely getting out of an interrupt

    A safer approach is to simply have the interrupt set a flag and return. You main program can be a tight loop that checks flags. When to detects the flag, it GOSUBs to the new location.
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    Re: EUSART vs. MSSP

    In practical terms, the device you want to talk to usually determines. If you are talking to a computer it will likely be RS-232 serial port you need the EUSART. If you are designing both ends, use...
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    Re: MicroCodeStudioPlus keeps crashing.

    It's not pointless if it helps find the problem. Nobody was suggesting that as a permanent solution. These problems are usually incompatibility with a driver somewhere.
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    Re: How to control the Si5351 pls ?

    Maybe I'll ask a broader question. The SI5351 device can generate a number of independent clocks, from a few Hz to over 100 MHz. Sounds pretty useful as a replacement for a VFO in radio projects. I'm...
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    Re: How to control the Si5351 pls ?

    Did you ever get this working?
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    Re: Pic16f18857 clock setup

    If it is blinking too fast, that would point to your clock speed being too high which is extremely unlikely. Are you absolutely sure your code is correct? Perhaps you should post your blink code.
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    Re: SEROUT Wi-Fi mode

    First, you need 3.3 V, so using MAX232 is a bad idea. MAX232 has 2 functions; invert the signal and boost the voltage. You do not want a bigger voltage! Run the PIC at 3.3V and you won't have to...
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    Re: Solar/wind system

    I think you'll be pretty disappointed in the outcome. First the solar part of generation - no output on a cold winter night, and on a hot June day, 300-400 Watts after conversions. Can't speak to the...
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    Re: MEProg Bootloader Software

    Are you sure you want a bootloader? It sounds like you just want a programmer, and you will need one in any case, even if just to install the bootloader.
    It's also bad form to start threads asking...
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