Basically,
I have anywhere from 5 to 15 or so tools in a designated area that's about 10"-14" across and a couple feet high. The tags will be on the bottom of the tools so the vertical is not that important. The items are removed frequently throughout the day. It is a common occurrence for someone to remove several items at once to keep from having to make multiple trips to get the right tool. Once the correct tool is determined and used, it is not uncommon for the unused tools to be left at the site of the repair. I would like to be able to program the id tags for the tools and for the arduino / rfid reader to keep a real-time inventory of the tools. If all the tools are not in the proper location, it is obvious to the tech.
I have my arduino working to the extent that I recognize a single tag, and light a green led. If the wrong tag is scanned, I light a red led for a brief time. After a predefined amount of time without reading the proper tag, I blink the red led until the missing tag is read. This would be some sort of audible alarm or something if I could get it all working.
Thanks,
Dale