Is possible to use an electronic balance with OpenERP?
At this time, it requires extensive code customization. This is why OpenERP has launched an initiative to raise funds and create a plug-and-play POSbox that supports touchscreens, tablets, scanner, thermal printer, and electronic scale. The objective has been reached. Release timeframe: Q1 2014. More info: http://www.indiegogo.com/projects/opensource-your-shop