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This mini tutorial will cover how we use barcode scanners. This isn't necessarily an Arduino project, but it is a tool that we use every day when shipping packages - instead of entering in invoice numbers, we use a barcode scanner.
Digital Shipping Scales
This tutorial will cover digital shipping scales! I know, exciting, right? But really, if you need to sense weights and get them into a computer or microcontroller, these are really easy to find, fairly accurate and easy to use.