Chuck, I'll be working with the kids again tonight. Hopefully we'll have time to go in a bit more detail. The 555 is appealing being it can do many things. We can use it as a timer, we can use it to flash leds, etc. The kids will only have to learn about the 555, caps and resistors.
-- 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, 11:49:02 AM, you wrote: CM> In mind this is a finite state machine. I would want to see an exhaustive CM> state diagram. CM> The circuit could be made using nothing but relays. CM> Or it could be made with a single eprom and some caps. CM> Or transistors and caps. CM> Or 74xx logic chips like flip flops. CM> Or a MCU chip or CPU based development board. CM> I think I could do this with pneumatics too. Perhaps mousetraps and strings CM> too. CM> What happens if someone repeatedly presses just one button or two buttons? CM> If someone presses the first button, does it wait forever for someone to CM> press the second button or is there a timeout. Etc etc etc. State diagram CM> would be most helpful. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com
