from prototyping to product

Thanks to the open source community I was able to create as my first project an Uno driving 4 16x2 LCD’s with a web server running on the Uno that is able to update information on each screen individually based on data passed to the Uno in the query string.

http://uno.ip.addre.ss/?id=1&l1=Line1text&l2=Line2text
the above line will update the data displayed on LCD 1. In order to change the display on LCD 2, all one needs to do is change ?id=1 to ?id=2 (and of course the data you want to display).

What I would like to do now is see how I can reduce the cost of this unit (I will need to make 150 of these). As for the LCD screens, I assume I can place an order with an overseas supplier, and can get them as low as $2.00 each.

How would I go about reducing the costs on the UNO side? Can I use a cheaper solution for Ethernet connectivity? Can I drop the uno completely and just use an ATMEGA328 chip (or something else with an arduino bootloader)? How would I go about getting the circuit board printed? anything else i’m missing?

Thanks for you help.

You can strip down to a standalone Atmega microcontroller. For the ethernet, there are a few ICs which provide the functionality. You can interface them to your microcontroller and get things running. http://www.edaboard.com/thread116929.html

Good luck