Using the 555 you could create three monostable timers like in this http://www.instructables.com/id/555-Timer/step2/555-Timer-Monostable-Mode/
Make the output of your "button 3" timer be the input voltage of "button 2" timer, and the output of "button 2" be the input of "button 1". This way, you have to hit 3 before there will be any voltage on 2 and hit 2 before there is any voltage on 1. Hitting 2 or 1 before hitting 3 will do nothing as they have no input voltage. You could set the time on 3 using the right R and C values to be something like 3 seconds so it will reset if 2 and 1 are not hit in that amount of time. I'd set the time on 2 to be less than 3 seconds and the time on 1 to be less than the time on 2. The output of 1 probably needs to trip a flip-flop or something that needs to be manually reset with a reset button so you can keep the light on however long. That is a pretty simplistic design. On Fri, Jan 9, 2015 at 9:55 AM, Mark - Myakka Technologies <m...@mailmt.com> wrote: > Doesn't have to be electronic, what are your thoughts? > > > > -- > 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, 10:36:07 AM, you wrote: > > TOG> Does it have to be electronic, you could do some creative > TOG> relay wiring to achieve the intended result other than the timer > > TOG> On Fri, Jan 9, 2015 at 9:16 AM, Mark - Myakka Technologies < > m...@mailmt.com> wrote: > TOG> Christopher, > > TOG> Thought about using one of my raspberry pis, but we have a 6 week > TOG> deadline and these kids need to know what they did.ￜ I think they > can > TOG> learn and explain a simple circuit in 6 weeks.ￜ Learn programming > and > TOG> linux in 6 weeks could be a bit more than they can handle. > > TOG> -- > TOG> Best regards, > TOG> ￜMarkￜ ￜ ￜ ￜ ￜ ￜ ￜ ￜ ￜ ￜ ￜ ￜ ￜ ￜ mailto: > m...@mailmt.com > > TOG> Myakka Technologies, Inc. > TOG> www.MyakkaTech.com > > TOG> Proud Sponsor of the Myakka City Relay For Life > TOG> http://www.RelayForLife.org/MyakkaCityFL > > TOG> Please Donate at > TOG> > http://main.acsevents.org/site/TR/RelayForLife/RFLFY12FL?team_id=1030009 > TOG> pg=team fr_id=37555 > TOG> ------ > > TOG> Friday, January 9, 2015, 10:06:39 AM, you wrote: > > CT>> Maybe use an Arduino? Cost would be about $29 for a name > CT>> brand one. Takes a little more programming but is reusable and > CT>> your circuit engineering would be minimal. > > CT>> -- > CT>> Christopher Tyler > CT>> MTCRE/MTCNA/MTCTCE/MTCWE > CT>> Total Highspeed Internet Services > CT>> 417.851.1107 > > CT>> ----- Original Message ----- > CT>> From: "Mark - Myakka Technologies" <m...@mailmt.com> > CT>> To: "Rory Conaway" <af@afmug.com> > CT>> Sent: Thursday, January 8, 2015 8:31:44 PM > CT>> Subject: Re: [AFMUG] OT - EE help please > > CT>> Rory, > > CT>> liking the 555 for now.ￜ Any other suggestions welcome > > > > > TOG> --- > TOG> This email is free from viruses and malware because avast! > TOG> Antivirus protection is active. > TOG> http://www.avast.com > > > > > > > > > > > > > --- > This email is free from viruses and malware because avast! Antivirus > protection is active. > http://www.avast.com > >
