I remember my first 555 timer my Sophomore year..
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Fri, Jan 9, 2015 at 12:19 PM, Mark - Myakka Technologies <m...@mailmt.com > wrote: > Chuck, > > Looking at magic black box stuff. I will not even try to explain what > is going on inside the 555 right now. They will just learn how to use > the 555. Not even going to go into depth on the caps and resistors. > > > This is a small part of a larger project. We are just trying to add > some bells and whistles to their presentation to make it stand out a > bit. > > -- > Best regards, > Mark mailto:m...@mailmt.com > > Myakka Technologies, Inc. > www.MyakkaTech.com > > Proud Sponsor of the Myakka City Relay For Life > http://www.RelayForLife.org/MyakkaCityFL > > Please Donate at > http://main.acsevents.org/site/TR/RelayForLife/RFLFY12FL?team_id=1030009&pg=team&fr_id=37555 > ------ > > Friday, January 9, 2015, 12:12:04 PM, you wrote: > > CM> In my mind, a 555 timer is more difficult to understand as it has a > CM> comparator and flip flop inside amongst more things. > > CM> I guess it depends on the opinion of what is easier to understand. > In my > CM> mind, relays are easier to understand than logic in chips like that. > > CM> For example, you can have a push button discharge a cap. That cap > would be > CM> across the windings of a relay. Big cap fed via a resistor. Push the > CM> button and the relay opens until the cap charges back up. > > CM> That is a pretty simple timer circuit. t=RC. > > CM> If you want to cut down the size of the big cap and obvious short life > of > CM> the pushbutton, you can go one step further and put a transistor in the > CM> circuit etc etc. In my mind that is much simpler and easier to > understand > CM> than a 555. > > CM> However, if you are looking for a simple block diagram understanding, > the > CM> 555 is the way to go. > > CM> I realize that I may not have the ability to look at these things as a > kid > CM> would look at them. What is simple to me may not be simple to them > and vice > CM> versa. > > CM> -----Original Message----- > CM> From: Mark - Myakka Technologies > CM> Sent: Friday, January 09, 2015 10:04 AM > CM> To: Chuck McCown > CM> Subject: Re: [AFMUG] OT - EE help please > > CM> Chuck, > > CM> I'll be working with the kids again tonight. Hopefully we'll have > CM> time to go in a bit more detail. The 555 is appealing being it can > CM> do many things. We can use it as a timer, we can use it to flash > CM> leds, etc. The kids will only have to learn about the 555, caps and > CM> resistors. > > > > --- > This email is free from viruses and malware because avast! Antivirus > protection is active. > http://www.avast.com > >
