View Full Version : Old Laptop for DRO ?
07-26-2011, 10:57 AM
Is there a program & IO board out there that a old Laptop & linear encoders that can be used for a Digital Readout?
07-26-2011, 11:38 AM
07-26-2011, 01:17 PM
Thank You for the input.
08-01-2011, 09:40 AM
There is the old yadro project if you can get someone to sell you the interface board kit.
08-01-2011, 09:46 AM
Nice thing with the Lindsey link is that no interface is required, it shows transistor buffers, but I have used TTL differential encoders/scales directly in to the P.P.
Although on some laptops the P.P. voltage is 3.5v, so it could be a problem, I have only used it on Desktop P.C.s.
08-01-2011, 01:06 PM
You dont even need all those transistors. Just use the high line of the differential referenced to ground. That will give you a 5v p-p signal that the parallel port will be happy with.
I would ditch the laptop and do something like the shumatech kit: