(09-24-2017, 08:17 PM)PMartin Wrote: I'm new to this and need a little help. I have a 4.0 Android tablet but it does not have Bluetooth. How can I directly connect the scales via USB? Do you have a controller board in a USB version? Thank you in advance. 
PMartin,
Arduino works with USB (for now). I don't sell a pre-made board with USB support but you can add an FTDI adapter. That said, I strongly recommend getting a cheap tablet that has BlueTooth. *Many* people have problems, especially with cheap no-name tablets.
The price difference will be $40 or less. If you know (can follow instructions) how to side-load apps into Amazon Fire, they sell for $49, and often come on sale for $39.
Regards
Yuriy