Controlling a pin over ethernet?

Projects General Guidance
1

Does anyone know a way of controlling pins with a enc20j60 over ethernet, it's really driving me insane!!!

For months now, I'm trying to find a way to control my lights and boiler without a my (apache) server, So i could use my router for that!

Due hardware incompatibility, mainly 5v vs 3.3v its not an option to solder it in to my router (and it has no usb). So i ordered a enc20j60.

I found a interesting example that worked: Control and Monitor Arduino Over the Web Using ENC28J60 | maniacbug
But its to difficult for me to change (need push buttons) and its probably to big, to add another library on a pro mini.

I also found this, what i think is the best way to use an external web-server? http://http://arduino.cc/forum/index.php/topic,76125.0.html
But it won't compile!!!

Alternative i was thinking to, use udp but i cant find an example of using it. I know linux, so i probably can link the web-page with netcat or some proxy. (understanding udp works similar? Please correct me when wrong!)

For now i really don't care what protocol, the only thing is that it can be done over ethernet. (with the enc20j60) ...Telnet maybe???
And the best way, should be something like: echoing "Pin13,HI" for example?

So please help me in the right direction!

Thanks.

2

I'm not sure how your router came to be involved, but Arduino plus an Ethernet shield with a sketch implementing a web server that accepted commands to control output pins would seem like a feasible solution. You'd have to write the sketch yourself, but you'll find examples showing how to do that using the Ethernet shield.

3

What your asking is pretty easy http meth post works pretty well here is a code example from one of my pet projects (excuse the sloppy code :slight_smile:

char* params;
 if (params = e.serviceRequest())
  {
    if (strcmp(params, "?cmd=up") == 0) { TempSet++; }
    else if (strcmp(params, "?cmd=down") == 0) { TempSet--; }
    else if (strcmp(params, "?cmd=high") == 0) { PumpState = 2; }
    else if (strcmp(params, "?cmd=low") == 0) { PumpState = 1; }
    else if (strcmp(params, "?cmd=off") == 0) { PumpState = 0; }

I'm setting one of two variables a temperature set point and a pump state, obviously you can expand that out to however many commands as you want. I'm using the etherShield.h and ETHER_28J60.h libraries for talking to that Ethernet chip.

4

@ PeterH

I'm not sure how your router came to be involved? I have a linux based (openwrt) router with a serial port.

@ silasmoeckel

I'm going to try that tomorrow.

Thanks