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  1. chopnhack

    Twin LED Flasher

    I used both suggestions of the extra resistor and the diodes and that allowed me to ramp up the speed between blinks. I used a 100k pot in place of R2 on both sides. I tried using my meter to read cycle, but sadly it did not work. I am going to look into that, I was excited to see if I could get...
  2. chopnhack

    Twin LED Flasher

    Here is a pretty good explanation of what is going on:http://www.electronics-tutorials.ws/waveforms/astable.html I see that in my schematic polarized capacitors were used. I wonder if that is causing some trouble. According to the link, the capacitor reverses its polarity during the switching...
  3. chopnhack

    Twin LED Flasher

    I will look into that, thank you Kris! I have to learn one of the methods if I am to be able to visualize circuits! I think I will follow your advice and choose current flow. It's odd that they teach electron flow at lower levels, I think I recall learning electron flow in high school physics...
  4. chopnhack

    Twin LED Flasher

    Ok, so I can understand charge flow and hole flow better.... Does this mean that in operation "holes" flow from the positive side of the source across the top rail through the anodes of the LED's and the 22k resistors. At the capacitor, the positive terminal repels the "holes". The "holes"...
  5. chopnhack

    Twin LED Flasher

    I built the schematic below: The LED's do indeed alternate flashing, but I noticed that they are not completely off between flashes. I probed the LED's to see what was going on, and the meter registered 2.5vdc when off! Looking at the schematic I guess that the capacitors and the 22k...
  6. chopnhack

    V-Reg Board for Breadboard use

    I was using the equation you posted: <<Harald Kapp said: ↑ The base current in this setup is approx. ib=(V(R1)-0.6V)/R2 (note that R2=16.4k may be too high resulting in too littel base current).>> I wasn't quite sure what you were getting at with the equation. I substituted the values for V and...
  7. chopnhack

    How Transistors Work

    It's kinda where I stopped reading and looked for help! Law of conservation of energy seemed to come to mind as well as transmutation, LOL
  8. chopnhack

    How Transistors Work

    I found it interesting, but I too took note of his very opinionated style. I found his statement of being able to sweep the charge out of a conductor with sufficient potential odd... how would the material keep its properties?? <<In silicon, you can sweep all the charges out of the material by...
  9. chopnhack

    Dancing Baby Groot

    It almost seems to me that there are three joints. The wire drawing Kris provided is good, but I think there might be another bend (maybe 180 degrees out of synch with the other lobe). That could better explain the gyration that is seen. I didn't listen to the audio, but I guess the speed of the...
  10. chopnhack

    How Transistors Work

    To be honest, that becomes a problem for me.... I can get bogged down in the minutia and loose the big picture! I do keenly appreciate the details and how things work. I don't like to treat things like black boxes. I try to understand it so that I can better know when to apply the information...
  11. chopnhack

    How Transistors Work

    As I try to learn more about these components, I stumbled onto this site. Can anyone review the information and let me know if this is a valid viewpoint or if its bunk. The author did state that it is his opinion as I recall, but so far reading it, it was making sense...
  12. chopnhack

    Crazy Caps

    WOW.... that wins a hardy WTF!! I would be pissed to find that in my assortment bag :p I am sure the work it would take would negate the savings in counterfeiting the part :D
  13. chopnhack

    Help Getting Started with PIC Microcontrollers

    Thanks Dan!! Yes, that was the problem I was having when I stopped looking at it. I will have to look into that tonight and see if I can get it to play nice. Thanks in advance for the offer, I will be taking you up on that! :cool: Yes, Kris B. has graciously offered his design and assistance...
  14. chopnhack

    Help Getting Started with PIC Microcontrollers

    How did you get code blocks running for you? I had a bunch of directory issues and shelved it.
  15. chopnhack

    Good basic breadboarding kit?

    These are all things that I have or have recently purchased. The multimeter is a steal at the current offered price. $43 from amazon.com or from the other site. Amazon would be the way to go if you have free shipping in the UK. BTW, there was a recent post from another member with a free link to...
  16. chopnhack

    V-Reg Board for Breadboard use

    Using the above equation I get a much larger value for R2, did I misunderstand something? ib=0.001A, V=16.4, R1=18Ω 0.001A=((16.4vdc*18Ω)-0.6vdc)/R2 R2 = 294.6k Ω That is a great explanation Harald! Thank you :-) I understand somewhat the balance between V-I-R but sometimes have trouble...
  17. chopnhack

    V-Reg Board for Breadboard use

    HaHa, don't be so sure! ;) 1. While Iout*R1 < 0.6V, Q1 remains low (unpowered) so all current must be flowing from In through R1 through v-regulator. Iout comes from Vdrop across R1 and v-reg (whatever internal resistance there is). 2. While Iout*R1 > 0.6V the distribution will depend on the...
  18. chopnhack

    "Has it got the Cobalt?" (story)

    What's wrong with PICAXE Basic? It looked approachable from the examples I saw. It's not the GOTO function is it? :p It teaches a discipline of logic, I wish I had more exposure to it. I had limited hands on experience in elementary and again in high school. When young I also had some...
  19. chopnhack

    "Has it got the Cobalt?" (story)

    LOL, here's to you sir! Owen: "What I really need is a droid who understands the binary language of moisture vaporators." C3PO: "Vaporators! Sir, my first job was programming binary loadlifters very similar to your vaporators in most respects!"
  20. chopnhack

    "Has it got the Cobalt?" (story)

    Do you think the folks that got started out with the first programming languages have a better grasp of computer programming in general since it was low level or is this simply a nostalgic viewpoint?
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