• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

USB data triggered relay

Not open for further replies.


New Member

I have a usb symbol barcode scanner that I want to trigger a 5v relay when data (barcode reads) pass through.

I want to be able to intercept the information without interfering with the normal connection and operation of the scanner and without ongoing background software on the intended host computer (i'm going to be installing this in a site I cannot monitor).

Any idea how I'd go about doing it?
Not open for further replies.

EE World Online Articles