Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Register Log in
  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by Beau Schwabe

  1. Beau Schwabe

    using a RTC in SF basic

    I am using 10 PCB segments ... each Segment has 12 LEDs. 6 for minutes and 6 for hours...
  2. Beau Schwabe

    using a RTC in SF basic

    "Confusion is inversely proportional to the proximity of knowledge"- Me I'm sorry for your confusion, this clock reads very similar to how you would read an analog clock.
  3. Beau Schwabe

    using a RTC in SF basic

    THAT video was just a test pattern ... here is another video from 12:59pm to 1:00am. The minutes are on the outer ring with the seconds and use a SINGLE led, while the hours are on the inner ring and use TWO led's with a gap in the middle. This way they can traverse over the 12, 3, 6, and 9...
  4. Beau Schwabe

    going out on a limb and praying the schematic is correct

    The 595 shift register can shift out at 100MHz ... that's faster than most processors could bit bang the data and definitely faster than an interpreted code processor running from BASIC could shift it out. The 595 is not your bottleneck. IOW... you don't really even need delays in your code...
  5. Beau Schwabe

    going out on a limb and praying the schematic is correct

    Please encapsulate and zip your entire project ... we have no idea what "SHIFT.bas", "setdigitalio.bas", and "intosc.bas" are doing because they are included in your main program but not attached to what you are posting in the forum.
  6. Beau Schwabe

    going out on a limb and praying the schematic is correct

    The only way this works is that if you also address ALL 3 Data lines BEFORE you initiate a CLK and LATCH. The software driver for this also needs to complement that type of configuration. This method is a way to send parallel serial data to separate '595 IC blocks' which seems counter...
  7. Beau Schwabe

    Need help with coupled inductor

    That project was nearly 30 years ago ... the Patent has a crude schematic ... and a suggestion on page 7 on how to control frequency. The "DP" labeled in section 912 were photocell opto-couplers that were controlled by a micro-controller tied back to image 5
  8. Beau Schwabe

    Need help with coupled inductor

    If you look at one of my patents on image 3 ... the oscillator section 406, uses a "pump and dump" in combination with an SCR to dump the capacitor charge into the coil .... The transformer was a 1:10 ratio transformer we had specially made at the time. The "trick" when I was developing this...
  9. Beau Schwabe

    Comparator hard to find without digikey

    Try clearing out your browser history and cookies
  10. Beau Schwabe

    Chinese Tarrifs – 104%!?!

    I have been ordering boards for years (thousands of boards). I have never paid a tariff on a board that I had to hand populate. I have always paid a tariff on boards that were populated.
  11. Beau Schwabe

    Chinese Tarrifs – 104%!?!

    Unless you want to populate the boards yourself .... if the boards are unpopulated there is not a tariff charge
  12. Beau Schwabe

    Preamble detection, how does it happen ?

    ... And I've had plenty of those ... even UV erasable versions of the 54. Here is to bit banging Assembly code the hard way back in the day. The 54' is missing a few KEY instructions that every other micro has, which makes it even more challenging. I think "addlw" and "sublw"... it's been...
  13. Beau Schwabe

    Preamble detection, how does it happen ?

    I implemented this years ago in a PIC16F54 ... Page 6 section 4.1 https://ww1.microchip.com/downloads/en/AppNotes/Atmel-9164-Manchester-Coding-Basics_Application-Note.pdf Once the bit period and sync are detected, just read the data at 1/4th delay of the period. Note: Something to know about...
  14. Beau Schwabe

    Can anyone pls buy these

    Maybe List what they are ... i.e. LCD driver, 555 Timer, Step-Up switching controller, Decade Counter, 4-Digit presetable Up/Down counter, Hi performance Op Amp, UA Op-Amp Still. for me, there isn't much I would use out of that these days, but someone else might.
  15. Beau Schwabe

    LM393 comparator output does not attain 'high'

    Ummm ... the LM393 is open collector and only driven LOW, so you may not "see" any voltage unless it is back driven from the connected circuitry.
See more

Latest threads

New Articles From Microcontroller Tips

Back
Top