Thank you Harry. The polarizing technique almost works. I don't need a robot. A vacuum hose sucks up one bottle at a time from a bin. The vacuum in the blocked hose retracts the hose. We then test it and spit it one way of the other with another blast of air. Upon release of the bottle the hose goes down again on its own. Howard has built the suck up machine. One moving part was required. Its a bit slow but we could have many. I am the one delaying the project.
Frank He wants to devise a scanning method that identifies the type plastic without the need for labels. The optical properties of each plastic type would act like a natural bar code. Harry -----Original Message----- From: H Veeder <[email protected]> To: vortex-l <[email protected]> Sent: Thu, Feb 27, 2014 1:07 pm Subject: Re: [Vo]:Plastic detector find Terry, Are you being funny? With barcodes and scanners cashiers don't need to read to price labels. He wants to devise a scanning method that identifies the type plastic without the need for labels. The optical properties of each plastic type would act like a natural bar code. Harry On Thu, Feb 27, 2014 at 12:35 PM, Terry Blanton <[email protected]> wrote: On Thu, Feb 27, 2014 at 11:43 AM, <[email protected]> wrote: > Thank you Jones. I want to detect the bottles before they are shredded and > washed. Why don't you just read the code off the bottom of the bottle? http://en.wikipedia.org/wiki/Plastic_recycling

