Ball is a standard pool table ball. Distance between PBs is about 6inches.
Not really....have any bearing on the required pulse length
Not really....have any bearing on the required pulse length
Yes, always.after a ball hits S1, does it hit S2 and S3
Do you think all this is going to produce a simpler design than eetech00's (i.e less components)?2 - quad 2-in NOR packages
1 - hex inverter
3 - resistors
3 - capacitors
decoupling, input filtering, output driver, etc.
I did not believe it would need so many components!
Add up all of the component pins. This is the minimum number of soldered connections, and is a good way to judge the relative complexity of two designs you are going to build by hand. Of course, all of this can be done with one $1, 8-pin PIC and one capacitor - if you have a development system, a compiler you are familiar with, know C++, etc.Do you think all this is going to produce a simpler design than eetech00's (i.e less components)?
Hi akIf the timing differences among the outputs you want is directly proportional to the distances among the switches, then one retriggerable monostable can do everything. If, for example, the times between S1 and S2 and between S2 and S3 are 1.0 s, and the monostable is set to 1.1 s, then the three times would be
3.1 s
2.1 s
1.1 s
In other words, depending on what the three times are, it might be possible to have the three switches in series fire only one timing circuit. SO - what are the three times?
ak
I know. I'm just pointing out a possibility he might not have thought through. The physical placement of the switches makes them mutually exclusive,which opens up other logical combinations and solutions.Except the OP doesn't want it to be re-triggerable. Once the timer starts, time must run to completion, ignoring any triggers.
Yup - post 45.If a best ball must hit all three switches as it rolls out and each one clicks 1-second, then all timers can be the same (one second) - assuming it take a second for the ball to roll from switch one to switch two.
yupyupyupyupyupI think the OP needs to give a clearer description how it works.
There are other languages easier to learn then the arcane syntax of C++.all of this can be done with one $1, 8-pin PIC and one capacitor - if you have a development system, a compiler you are familiar with, know C++, etc.
Yup - post 45.
yupyupyupyupyup
um...the OP describes it twice.......once in #23 and again in #33From what I remember of the old horse racing game, the ball would roll off a flapper and run for about 3-seconds if the ball hits the best hole, 2-seconds if it hits the medium hole to the 1-second if it hits the 3rd best hole.
I don't remember them cascading and hitting all three switches. If a best ball must hit all three switches as it rolls out and each one clicks 1-second, then all timers can be the same (one second) - assuming it take a second for the ball to roll from switch one to switch two.
I think the OP needs to give a clearer description how it works.
Thank god for small favors.There are other languages easier to learn then the arcane syntax of C++.
For a single 555, this is one way to do it:Hi everyone,
I am trying to built a timer circuit which will have 3 momentary push buttons that each will trigger a timer with 3 different preset durations in the range of 0-4 seconds. Once triggered the timer's output should go high until the timer runs out and any further triggering while the timer is running should be ignored. Then it should return in the idle state, waiting for the next trigger. 555 with RC network accuracy is sufficient (no need to use crystals).
Closest I could get by googling is the following:
http://home.cogeco.ca/~rpaisley4/LM555PowerOffDelay2.GIF
This seams to be exactly what I need, just missing the multiple triggers. Any thoughts on whether they could be implemented, preferably by using 3 sets of RC networks rather than 3 timers?
Thank you in advance,
Pete
by Aaron Carman
by Duane Benson
by Duane Benson
by Jake Hertz