how I want to read the value from the specific cell in excel? I was plan to scan the barcode and send the bar ID into specific excel cell inside the SD card. For example...the ID show in cell F5. Then at cell F6 will show the S/N for that ID (using excel formula). I want the arduino to read the S/N inside cell (F6) and print out at LCD..
*i ve the list all barcode ID in comlumn A and S/N at column B
I ve try to search every where in internet and still not found the solution my problem.