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  1. SparkyCal

    Schematic Help

    Can I please get help with this? As you can see by the picture of the circuit I am building, I am connecting the resistors to the 4017 Chip. The circled resistor at the very top, is connected to Pin 9 ( I thought I would mention this, as it is not obvious from the picture). My question is...
  2. SparkyCal

    A Phony Question

    I have a quick question. I have made the circuit shown on this webpage: https://www.circuits-diy.com/telephone-in-use-indicator/#Circuit_Explanation Basically, the purpose of the circuit is to light an LED when a phone is in use. The explanation says "Furthermore, the external power source is...
  3. SparkyCal

    Adruino connection question

    I am building a guitar pedal distortion circuit (see attached schematic). At a point during the circuit, two wires are connected to the left and right sides of diodes, in order to create the distortion. (see there arrow that points to the area of the circuit I am referring to) Different types...
  4. SparkyCal

    Pop goes the weasel

    Hi folks. I hooked up a new Yamaha surround sound home theater receiver. I have two front speakers and a centre speaker. I did not hook up a woofer. The back speakers are high quality Wharfedale anniversary edition speakers. They are connected wirelessly to the receiver via a Rocketfish...
  5. SparkyCal

    A Speaker OHM question

    Hello to my old friends here. I am hoping you might help me with this: I ordered a new home theatre receiver. The manual is here: https://download.yamaha.com/files/tcm:39-1161601 I want to match this up with some home theatre speakers I already have. The two rear speakers will be high quality...
  6. SparkyCal

    With a Little Help from my friends?

    Hi guys. I don't know if you guys remember me. or if some of my friends are still here. I started working on a simple Theramin project. For those of you whom don't know, a Theramin features an antenna. When your body gets close to it, it makes weird high pitched sounds. Bands like Led Zeppelin...
  7. SparkyCal

    Grounding a Ham Antenna

    Hi folks: I just purchased a Diamond 50X Ham antenna. Shown here: https://www.radioworld.ca/dia-x50a It has to be grounded. Is there any way I can ground it inside my home to the copper piping? Rather than outside with a grounding rod? And how exactly would I ground it? Thank-you
  8. SparkyCal

    Power supply for CB

    Hi my friends I have the following question. I have a bench power supply. The description is below. I am trying to use it to power my CB radio. I dialed in 12 volts but the amp/current readout seemed to be activated and it was giving me different read outs, which made my cb work funny. The...
  9. SparkyCal

    A Phoney Question

    I have your typical V Tech and Panasonic cordless phone systems at home. Both sets are working on a single line, as I split the phone line coming in and routed it to both systems. My question is this (and it does not matter which of the two systems I use). Is there anyway to modify one of the...
  10. SparkyCal

    It's Been a Long Time.....question

    Hi folks: It has been a long time since eI have been here, because I have put my electronics projects on hold. I'm not ready to get back to it just yet, but I have a question that I am sure someone here could help with. I bought a new Hinston Internet radio which I love. It sounds great...
  11. SparkyCal

    Radio Daze

    I have always like radios. Even though many of them have given way to other things (like the internet), I wonder if there is still a place for radios. So, I have several observations and questions: In the old days, I used to love to listen to police scanners. I had a base unit and hand held...
  12. SparkyCal

    Need Help on Cord repair...How can this be?

    I have a robotic cleaner that crawls along the bottom of a pool to clean it. Suddenly it stopped working. I took it apart and I applied 24 volts (whicnbnis what it runs. on), directly to the motor. The motor began work g. This means that there is a short in the long rubber like cord that...
  13. SparkyCal

    A Little Delayed in Starting

    I am starting a delay circuit for my guitar pedal, thanks to the nudge from VB. I received the PT2399 Chip ( actually, I have 4 of them). I am tempted to breadboard this first, but breadboarding. gets a little hairy- especially with all the wired and stuff. So, I am considering simply going to...
  14. SparkyCal

    On the Bench

    Sorry..deleting this thread as I now realize, that I have already posted it on this site.
  15. SparkyCal

    Series or Parallel?

    I am circling back to a project I undertook when I first got into electronics. The project is to install a ring of LED lights around my guitar pickup. I envision powering the lights with a 9 Volt battery. I probably will use 10 LEDs or so. I realize that I will need a step down resistor...
  16. SparkyCal

    Question about new schematic- Metronome

    I am attempting to build this metronome on a breadboard. https://www.thatraymond.com/2019/04/22/555-metronome I have an initial question: You will see a 100K and 18K component in the schematic. There is a line crossing out the initial values. I assume this means that the builder tweaked the...
  17. SparkyCal

    Toast or Useable

    Many years ago, when police scanners were popular, I purchased a Uniden TrunkTracker 3. I remember that it was expensive. I still have it, and it is in very good shape as I hardly used it. I realize that everything has changed where the world of scanning is concerned. Is this unit completely...
  18. SparkyCal

    How Can I Resist?

    I am working on my guitar pedal and I need to figure out what size of a resistor I need to step down the 9 volt power supply in order to light up three LEDs that are run as follows: All three anode leads are run in series to one another All three cathode leads are run in series to one another...
  19. SparkyCal

    The New Model

    So, I had a new idea. Enclosures for a guitar pedal can get quite expensive, and are sometimes too small for through hole work. So, rather than spend $24 on an enclosure, I bought 4 junction boxes for $11 at Home Depot. They look cool, (in a rustic sort of way) and they do the job. Have a...
  20. SparkyCal

    Is this possible to do?

    I have hunted around the net, and have found various schematics that may do the following, however, I am looking for a simple way of doing it using parts that are commonly available. I am looking for a way to hook up a LED so that whenever our phone line is in use, it lights up and stays lit...
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