Maker Pro
Maker Pro

Controlling relays over internet

S

srj8219

Jan 1, 1970
0
Hello friends,

I have come across a small problem in which I need to control a relay
over the internet. The concept is that if I press a switch from my
home, a relay in my office should switch on. I know that there are
some small embedded webservers out there which can be used for the
job. The main thing is that I don't need a computer on either end. It
should be some small piece of hardware which can be connected to the
Ethernet. I came across serial to Ethernet solutions from Lantronix.
Is that suitable for my application?

Has anyone done something similar?

Thanks in advance

-Suraj
 
srj8219 said:
Hello friends,
I have come across a small problem in which I need to control a relay
over the internet. The concept is that if I press a switch from my
home, a relay in my office should switch on. I know that there are
some small embedded webservers out there which can be used for the
job. The main thing is that I don't need a computer on either end. It
should be some small piece of hardware which can be connected to the
Ethernet. I came across serial to Ethernet solutions from Lantronix.
Is that suitable for my application?
Has anyone done something similar?

Put together an Microchip ENC 28J60 + AVR or PIC.

Or reprogram an old ADSL modem and use one of it's gpio. Most of them have
some form of ARM7 + DRAM + eeprom.
 
A

Adrian Jansen

Jan 1, 1970
0
Put together an Microchip ENC 28J60 + AVR or PIC.

Or reprogram an old ADSL modem and use one of it's gpio. Most of them have
some form of ARM7 + DRAM + eeprom.
Circuit Cellar just gave a design award to such a device.

--
Regards,

Adrian Jansen adrianjansen at internode dot on dot net
Design Engineer J & K Micro Systems
Microcomputer solutions for industrial control
Note reply address is invalid, convert address above to machine form.
 
R

Ross Herbert

Jan 1, 1970
0
:Hello friends,
:
:I have come across a small problem in which I need to control a relay
:eek:ver the internet. The concept is that if I press a switch from my
:home, a relay in my office should switch on. I know that there are
:some small embedded webservers out there which can be used for the
:job. The main thing is that I don't need a computer on either end. It
:should be some small piece of hardware which can be connected to the
:Ethernet. I came across serial to Ethernet solutions from Lantronix.
:Is that suitable for my application?
:
:Has anyone done something similar?
:
:Thanks in advance
:
:-Suraj


There are some circuits on the web relating to this subject eg.
http://electronicsworld.tripod.com/remotecontrolsimages/remotecontrolsckt2.html
http://www.electrofriends.com/projects/telephone/index.html
but I can't vouch for their workability.

Also some kits http://www.quasarelectronics.com/kit-files/3000/3140.pdf
 
D

David Tweed

Jan 1, 1970
0
Adrian said:
Circuit Cellar just gave a design award to such a device.

Circuit Cellar just ran an entire contest based on the WIZnet W5100,
which is 10/100 Ethernet plus TCP/UDP/IP in hardware on a compact
module, with a choice of SPI or 8-bit parallel bus interface to a
host microcontroller. Quite suitable for a project such as this, with
the host processor running a simple HTTP server and possibly a DHCP
client.

More information here:
http://www.wiznet.co.kr/
and here:
http://bbs.circuitcellar.com/phpBB2/viewforum.php?f=30

Many of the contest entries themselves will be appearing in the
magazine over the coming months.

-- Dave Tweed
 
J

Jim Thompson

Jan 1, 1970
0
:Hello friends,
:
:I have come across a small problem in which I need to control a relay
:eek:ver the internet. The concept is that if I press a switch from my
:home, a relay in my office should switch on. I know that there are
:some small embedded webservers out there which can be used for the
:job. The main thing is that I don't need a computer on either end. It
:should be some small piece of hardware which can be connected to the
:Ethernet. I came across serial to Ethernet solutions from Lantronix.
:Is that suitable for my application?
:
:Has anyone done something similar?
:
:Thanks in advance
:
:-Suraj


There are some circuits on the web relating to this subject eg.
http://electronicsworld.tripod.com/remotecontrolsimages/remotecontrolsckt2.html
http://www.electrofriends.com/projects/telephone/index.html
but I can't vouch for their workability.

Also some kits http://www.quasarelectronics.com/kit-files/3000/3140.pdf

Many, if not all, E-mail clients can filter an E-mail message... when
there's a match, run an executable. Eudora can certainly do that.
Back before text messaging I used a trick like that to send an E-mail
to my pager.

...Jim Thompson
 
P

Paul Hovnanian P.E.

Jan 1, 1970
0
srj8219 said:
Hello friends,

I have come across a small problem in which I need to control a relay
over the internet. The concept is that if I press a switch from my
home, a relay in my office should switch on.

It won't take long before your boss figures out that your desk lamp
coming on has no relationship to your attendance. ;-)
 
R

Robert Adsett

Jan 1, 1970
0
Paul Hovnanian P.E. said:
It won't take long before your boss figures out that your desk lamp
coming on has no relationship to your attendance. ;-)

So much for that keyboard.

Robert
 
Top