schematics for two projects

Hi,

Here are a couple of projects that I've recently built. One is
a dc motor direction controller for a sculpture. When the motor
raises a stone to the top, it trips a microswitch, which
reverses the direction of the motor and the stone descends.
When the motor lowers the stone to the bottom, it closes another
microswitch, reverses the direction of the motor again and it
raises the stone. This cycle goes on continuously.

The schematic is at,

http://mypeoplepc.com/members/jon833...mial/id11.html

The other project was a well pump timer. There are two well
pumps that fill a cistern. The circuit toggles between the two
pumps, which stay on and stay off at adjustable times.

Jon

Both projects will be better and simpler if you use microprocessor.

Fernando


"Jon G." <jon8338@peoplepc.com> escreveu na mensagem
news:i1tde.2673$pe3.569@newsread3.news.atl.earthli nk.net...

Hi,

Here are a couple of projects that I've recently built. One is
a dc motor direction controller for a sculpture. When the motor
raises a stone to the top, it trips a microswitch, which
reverses the direction of the motor and the stone descends.
When the motor lowers the stone to the bottom, it closes another
microswitch, reverses the direction of the motor again and it
raises the stone. This cycle goes on continuously.

The schematic is at,

http://mypeoplepc.com/members/jon833...mial/id11.html

The other project was a well pump timer. There are two well
pumps that fill a cistern. The circuit toggles between the two
pumps, which stay on and stay off at adjustable times.

Jon

"Fernando" <fjpc60@hotmail.com> schreef in bericht
news:1115074374.73443@gorgo.centroin.com.br...

"Jon G." <jon8338@peoplepc.com> escreveu na mensagem
news:i1tde.2673$pe3.569@newsread3.news.atl.earthli nk.net...
Hi,

Here are a couple of projects that I've recently built. One is
a dc motor direction controller for a sculpture. When the motor
raises a stone to the top, it trips a microswitch, which
reverses the direction of the motor and the stone descends.
When the motor lowers the stone to the bottom, it closes another
microswitch, reverses the direction of the motor again and it
raises the stone. This cycle goes on continuously.

The schematic is at,

http://mypeoplepc.com/members/jon833...mial/id11.html

The other project was a well pump timer. There are two well
pumps that fill a cistern. The circuit toggles between the two
pumps, which stay on and stay off at adjustable times.

Jon

Both projects will be better and simpler if you use microprocessor.

Fernando

As for the DC motor controller you're wrong. A micro would only give
unnecessary complications. As for the pumps I doubt it. You may go from two
to one electronic component but you'll have to program the latter. Which
requires some skills and equipment. I would use a micro for it but for
flexibility not for component count.

petrus bitbyter.

"petrus bitbyter" <pieterkralt@hccnet.nl> wrote in message
news:4276b586$0$779$3a628fcd@reader20.nntp.hccnet. nl...

"Fernando" <fjpc60@hotmail.com> schreef in bericht
news:1115074374.73443@gorgo.centroin.com.br...
"Jon G." <jon8338@peoplepc.com> escreveu na mensagem
news:i1tde.2673$pe3.569@newsread3.news.atl.earthli nk.net...
Hi,

Here are a couple of projects that I've recently built. One is
a dc motor direction controller for a sculpture. When the motor
raises a stone to the top, it trips a microswitch, which
reverses the direction of the motor and the stone descends.
When the motor lowers the stone to the bottom, it closes another
microswitch, reverses the direction of the motor again and it
raises the stone. This cycle goes on continuously.

The schematic is at,

http://mypeoplepc.com/members/jon833...mial/id11.html

The other project was a well pump timer. There are two well
pumps that fill a cistern. The circuit toggles between the two
pumps, which stay on and stay off at adjustable times.

Jon

Both projects will be better and simpler if you use microprocessor.

Fernando



As for the DC motor controller you're wrong. A micro would only give
unnecessary complications. As for the pumps I doubt it. You may go from
two to one electronic component but you'll have to program the latter.
Which requires some skills and equipment. I would use a micro for it but
for flexibility not for component count.

petrus bitbyter.



You could use a 3.2GHz, 64-bit CPU PC with 2GB RAM running XP and download

free software.....

(please, I'm only kidding!)

More seriously, you could use two DPDT push-on/push-off microswitches and
throw away the relay, but the circuits as given are perfectly adequate.
Maybe the latching dual-coil relay is a bit hard to get some places, but
it's still a good solution.

Ken