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I recently got my packet of 50 RGB LEDs, and free 50 current-limiting resistors to go along with it, direct from China.
Barcode symbologies that the CueCat reads:
I bought 3 nice, new, and almost shiny CueCats in a package deal from eBay.
As far as a tutorial for hacking CueCats, here goes.
Built with the PC Starter Kit ("LCD Kit 04") from the good folks at 411 Technology Systems, it is mounted in a computer case spacer to be mounted in a computer.
This is the finished product, after assembly of the Breadboard Power Supply.
For more info, see the First Post about it.
Here's my "partially-assembled-and-disassembled-for-the-photo" breadboard power supply. It comes as a kit from SparkFun Electronics
Ok, here I have a Symbol LT-1780 handheld barcode scanner. It has an RJ-45 cable with a 9-pin end (Not RS-232). I took an old RS-232 plug and put that on the end of the cable, and used that to wire it up to the Arduino.