tag:blogger.com,1999:blog-2671439418188048550.post7096499414438028415..comments2023-11-09T04:54:20.905-08:00Comments on Gordophone: Gordon Goodhttp://www.blogger.com/profile/02789377236535400196noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-2671439418188048550.post-37588627308021543842014-03-16T10:50:25.367-07:002014-03-16T10:50:25.367-07:00I got lucky, as it seems to work fine if you suppl...I got lucky, as it seems to work fine if you supply the sensor 3.3v for Vin. I get the same sort of response as when I power it with 5V and read it with a 5V Arduino.Gordon Goodhttps://www.blogger.com/profile/02789377236535400196noreply@blogger.comtag:blogger.com,1999:blog-2671439418188048550.post-20759593607354904492014-03-15T14:58:43.764-07:002014-03-15T14:58:43.764-07:00How well did the breath sensor work on 3.3 volts? ...How well did the breath sensor work on 3.3 volts? The spec sheets for the Freescale sensors show a nominal 5V for operation, with a tolerance of 0.25V above or below. Your schematics don't show an alternate voltage source for the sensor, and the Teensy 3.1 analog inputs are not 5V tolerant anyway, requiring use of a voltage divider on the sensor output.Paulhttp://krellmusician.comnoreply@blogger.comtag:blogger.com,1999:blog-2671439418188048550.post-53050905206471298982013-09-20T20:54:10.264-07:002013-09-20T20:54:10.264-07:00Thanks, Paul The mouthpiece is fashioned from a lo...Thanks, Paul The mouthpiece is fashioned from a low temperature thermoplastic named ShapeLock that can be softened up with 150F water. See http://ShapeLock.com, and Maker Shed carries it.Gordon Goodhttps://www.blogger.com/profile/02789377236535400196noreply@blogger.comtag:blogger.com,1999:blog-2671439418188048550.post-29470327756771223112013-09-20T20:47:26.572-07:002013-09-20T20:47:26.572-07:00Sorry if you've answered this question elsewhe...Sorry if you've answered this question elsewhere, but what exactly are you using for the physical mouthpiece on this instrument? The entire concept and execution are quite cool.Paulhttp://krellmusician.comnoreply@blogger.com