Add Web services to your next embedded project with this tiny module

PIC-MICRO-WEB SparkFun Electronics

Honey, they’ve shrunk the Web server. This almost sounds like a big fluffy bag of vaporware, but OLIMEX, Ltd has indeed reduced a viable Web server footprint to fit inside of a plastic DB-25 shroud.

Known as the PIC-MICRO-WEB, this Internet interface is designed around two PIC mainstays: the PIC18F67J60 microcontroller and Microchip’s TCP-IP stack. This could be the foundation for adding Web services to your next embedded project.

And if your jaw ain’t off the floor yet, here goes again: the PIC-MICRO-WEB also contains an RJ45 Ethernet port. Ahem, complete with support for Power-Over-Ethernet (PoE) so that no external power supply is needed. Otherwise, you could draw your power through the PIC-MICRO-WEB’s DB-25 parallel port. You can purchase the PIC-MICRO-WEB for $69.95 (known as the Ethernet Micro Web Device; #DEV-08557) from SparkFun Electronics.

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4 Comments

Can someone give examples of what this might be used for? Thanks.

It's best suited for implementing web services. Without a lot of onboard storage, it won't make a very good traditional web server.

It would best be used to connect devices to the internet and to provide a means of remote telemetry and control. Let's say you had a home security system that you wanted to be able to control remotely. There's a limited number of things you would want to do such as turn it on or off remotely, perhaps control individual zones, query the status of sensors, turn lights on and off, etc. Traditionally, you would need to create a software interface layer and implement socket-level communications which involves some serious programming. But by using a web server instead, the interface programming would be done using web services becoming easier and, more importantly, more flexible because web services can interface to almost any platform.

So, using this example, you hook the web server up to the security system hard-wiring it through the parallel port and you plug the ethernet port into your cable modem. You would still have to write code to access the API of the security system, but writing the interface to the outside world becomes much, much easier. Lots of microcontroller project boards have parallel ports through which they can be programmed.

Another advantage of this approach is that you can make separate systems (let's say that you also had a home-energy management system that might benefit from knowing that a door or window was open) talk to each other via the web services even if they have different microcontrollers, again through the web services.

you know the magnetic patch cable to connect a guitar's input line?You should.
Well, all cables, even ethernet, should be made like that, or wireless completly. or add it to the cellphone.

kardelen133 (not verified)

Web your.

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