Re: Turtle Art sensor xo 1.75 range voltage

2012-06-02 Thread Frederick Grose
On Sat, Jun 2, 2012 at 12:59 AM, John Watlington w...@laptop.org wrote: On Jun 1, 2012, at 9:24 PM, fors...@ozonline.com.au wrote: We should test the calibration again. Walter, Guzman Testing with TA140 It looks like the 1.75 audio circuit was changed between the preproduction and

Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread forster
We should test the calibration again. Walter, Guzman Testing with TA140 It looks like the 1.75 audio circuit was changed between the preproduction and the ramp unit 1.75's Testing on SKU199 and SKU204, the impedance has gone from 1k to 4k and the calibration is all wrong on 204 (TA

Re: Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread James Cameron
Thanks for testing, this sounds interesting. On Sat, Jun 02, 2012 at 11:24:45AM +1000, fors...@ozonline.com.au wrote: We should test the calibration again. Walter, Guzman Testing with TA140 It looks like the 1.75 audio circuit was changed between the preproduction and the ramp unit

Re: Re: Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread forster
Testing on SKU199 and SKU204, the impedance has gone from 1k to 4k and the calibration is all wrong on 204 Possibility of damage? How are you measuring this, so that I can reproduce on units that I believe are undamaged? Are you measuring DC impedance with laptop power off, or on?

Re: Re: Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread James Cameron
On Sat, Jun 02, 2012 at 12:36:08PM +1000, fors...@ozonline.com.au wrote: Testing on SKU199 and SKU204, the impedance has gone from 1k to 4k and the calibration is all wrong on 204 Possibility of damage? How are you measuring this, so that I can reproduce on units that I believe are

Re: Re: Re: Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread forster
Thanks The turtle code is forever print voltage Could you please explain how to do this? I've not used Turtle Art, so don't presume any foreknowledge. look at the blocks submenu, the 4th item from the left in the main menu look at the 'flow operators' pallette the 5th item in the submenu,

Re: Re: Re: Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread forster
James I think I have eliminated software differences. Both laptops reflashed to OS8 (12.1.0) Turtle Blocks V141 ( a new version is just released) Phono plug with left-right-ground all shorted forever print voltage displays: 0VSKU199 -1.3V SKU204 Tony

Re: Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread John Watlington
On Jun 1, 2012, at 9:24 PM, fors...@ozonline.com.au wrote: We should test the calibration again. Walter, Guzman Testing with TA140 It looks like the 1.75 audio circuit was changed between the preproduction and the ramp unit 1.75's Testing on SKU199 and SKU204, the impedance has gone

Re: Re: Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread forster
Wad, thanks, Tony On Jun 1, 2012, at 9:24 PM, fors...@ozonline.com.au wrote: We should test the calibration again. Walter, Guzman Testing with TA140 It looks like the 1.75 audio circuit was changed between the preproduction and the ramp unit 1.75's Testing on SKU199 and