Make: Noise — Discuss this article

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• PICAXE-08 = the new 555 !
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  Although I'm very enthusiastic about Make:,the 555 article rather hacked back to another era! Come on guys-the 555 was introduced in 1973 for heavens sake. It may have been the most popular IC of all time,BUT 34 years in electronics is akin to an ice age in history.
  
  I went on record ~2002 as promoting a UK sourced PICAXE microcontroller as the new era 555 in fact. Cheap (~US$3),powerful,versatile, brilliantly supported & so easy to use that even your dog could understand their high level commands. There are now 11 in the Picaxe family,& all program via a free editor & just 2 resistors!
  
  OK- twist my arm- I'll look to pen a PICAXE Make: article,but suggest the curious see http://www.picaxe.orcon.net.nz or just Google.

  Posted by manukanz on July 04, 2007 at 16:19:36 Pacific Time

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  I am trying to get back into making this stuff, and I figured since I haven't done it in years this would be a good place to start.
  
  But for the life of me I cannot find any 600 Ohm resistors, was it a misprint and you meant 680?

  Posted by kmarriner on June 26, 2007 at 17:10:07 Pacific Time

• 555 timer
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  I'm wondering what I use for a power source in this circuit. (This is the first electronics experiment I've ever done so be nice!) Do I have to buy some huge DC power box?

  Posted by magician322 on June 22, 2007 at 17:00:08 Pacific Time

• Voodoo
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  Overall I liked this article (and the other articles by the same author), but the explanation of R3 and C2 in Figure 2 is very frustrating to me. Almost every electronics tutorial I've seen that's above the most basic level seems to have these mystery components that are never really explained.
  
  I have 3 questions:
  
  1. When designing this circuit, how does one know that the LED is susceptible to excessive current?
  
  2. When designing this circuit, how does one know that the 555 timer is susceptible to random noise?
  
  3. Once one has determined that the 555 timer is susceptible to random noise, how does one determine how to correct this?
  
  Once again, I liked this article overall, but I really wish components weren't just glossed over. It's hard for me to have any confidence when designing my own circuits if I can't even completely understand the circuits I'm learning from.

  Posted by clgonsal on June 03, 2007 at 19:09:24 Pacific Time