User contributions for Wvbailey
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30 December 2008
- 17:0917:09, 30 December 2008 diff hist +1,244 User talk:Wad →Dissasembly of keyboard: safety first. who cares about frequency response if you've fried your laptop or yourself?
15 September 2008
- 23:5423:54, 15 September 2008 diff hist +625 Talk:XO-2 →USB: if you leave this out of the design you've killed it
9 July 2008
- 18:4318:43, 9 July 2008 diff hist +450 Talk:Measure →line voltage: good information, the cautions about damage from even a 1.5 volt battery still remain
3 July 2008
- 00:1300:13, 3 July 2008 diff hist +459 User talk:Arjs →Turtle Art with Sensors: wvbailey's back from Wyoming
31 May 2008
- 15:3415:34, 31 May 2008 diff hist +1,362 Measure →Projects and Activities Index: add frequency counter, port expander to supply +5 volts to all these gizmos
- 15:0615:06, 31 May 2008 diff hist +652 Measure →Learning Activities: small edits, add an intro to the "index" about "transducers"
- 03:1403:14, 31 May 2008 diff hist +3,243 Measure →Projects and Activities Index: more activities around electromagnetism
24 May 2008
- 14:5114:51, 24 May 2008 diff hist +134 Measure/Projects/Signal-Generator →Detailed circuit description: attempt to improve image resolution current
- 14:4114:41, 24 May 2008 diff hist +37 N File:OLPC oscillator 0.png 2nd download attempt to improve image
- 02:4402:44, 24 May 2008 diff hist +417 Measure/Projects/Signal-Generator →Detailed circuit description
- 02:3102:31, 24 May 2008 diff hist +253 Measure/Projects/Signal-Generator →Detailed circuit description: tradeoffs
- 02:2602:26, 24 May 2008 diff hist +1,233 Measure/Projects/Signal-Generator →Detailed circuit description: a followup
- 01:4001:40, 24 May 2008 diff hist +316 Measure/Projects/Signal-Generator →Detailed circuit description: add circuit drawing
- 01:3601:36, 24 May 2008 diff hist +43 N File:OLPC oscillator 0.PNG Original drawing by wvbailey in Autosketch.
- 01:3101:31, 24 May 2008 diff hist +7 m Measure →Projects and Activities Index: correct typos in the update
- 01:2901:29, 24 May 2008 diff hist +131 Measure →Projects and Activities Index: update
- 01:2501:25, 24 May 2008 diff hist −13 Measure →Projects and Activities Index: update
- 01:2101:21, 24 May 2008 diff hist +771 Measure/Projects/Lighted Graticule →Introduction -- Graticule working with 50:1 probe for a calibrated display current
- 01:1001:10, 24 May 2008 diff hist +94 N File:Oscilloscope circuit 5 1.PNG Original drawing by wvbailey in Autosketch, saved as png, trimmed in Acrobat and saved as png.
- 01:0401:04, 24 May 2008 diff hist +2,291 Measure/Projects/Lighted Graticule →Introduction -- Graticule working with 50:1 probe for a calibrated display: revise a bit -- a spec is developing...
- 00:2200:22, 24 May 2008 diff hist +388 Measure/Projects/Lighted Graticule →Lighted Graticule: am making progress: redefine the general intent
22 May 2008
- 17:2317:23, 22 May 2008 diff hist +1 m Measure/Projects/Signal-Generator →= Input Vin truly floating, thus ''not'' referenced to circuit common ("ground"):
- 17:2217:22, 22 May 2008 diff hist +1,354 Measure/Projects/Signal-Generator →Operational amplifier and level-shifter: add a second form of the differential amplifer when Vin truly floats
20 May 2008
- 23:0823:08, 20 May 2008 diff hist +1,924 Measure/Projects/Signal-Generator →Detailed circuit analysis: flesh out some of the amplifier analysis
- 22:3922:39, 20 May 2008 diff hist −16 Measure/Activities/Magnets and Wire →Build your own telephone: change bold-faced header to subsection current
- 22:3722:37, 20 May 2008 diff hist +1,365 Measure/Activities/Magnets and Wire →Build your own microphone. Build your own speaker.: fix photo captions
- 20:5120:51, 20 May 2008 diff hist +816 Measure/Activities/Magnets and Wire →Build your own telephone: add photos
- 20:2220:22, 20 May 2008 diff hist 0 N File:OLPC tuning fork oscillation on screen 1.png No edit summary
- 20:1720:17, 20 May 2008 diff hist 0 N File:OLPC vibrating tuning fork 1.png No edit summary
- 19:5519:55, 20 May 2008 diff hist +588 Measure/Activities/Magnets and Wire →Build your own microphone. Build your own speaker.: twiddle with the intro
- 16:4816:48, 20 May 2008 diff hist +881 Measure/Activities/Magnets and Wire →Magnets and Wire: add photos
- 16:3016:30, 20 May 2008 diff hist 0 N File:OLPC vise and coil 1.png No edit summary
- 16:2916:29, 20 May 2008 diff hist 0 N File:OLPC tuning forks 1.png No edit summary
- 16:2716:27, 20 May 2008 diff hist 0 N File:OLPC cup, magnet and coil 1.png No edit summary
- 16:2416:24, 20 May 2008 diff hist 0 N File:OLPC cup and magnet 1.png No edit summary
- 15:4115:41, 20 May 2008 diff hist +298 Measure/Activities/Magnets and Wire →Build your own microphone. Build your own speaker.: add photo of coil
- 15:1215:12, 20 May 2008 diff hist 0 N File:OLPC guitar probe coil 3b.png No edit summary
- 14:5114:51, 20 May 2008 diff hist 0 N File:OLPC stereo input jack.png No edit summary
17 May 2008
- 20:3720:37, 17 May 2008 diff hist +5,698 Measure/Activities/Magnets and Wire →Build your own microphone. Build your own speaker.
- 17:3717:37, 17 May 2008 diff hist +1,983 Measure/Projects/Lighted Graticule photo with commentary
- 17:0217:02, 17 May 2008 diff hist +1,066 N Measure/Projects/Lighted Graticule New page: = Lighted Graticule = == Introduction -- What is a graticule? == thumbnail|right| A '''graticule''' is a "scale on transparent material on the foca...
- 16:4016:40, 17 May 2008 diff hist +667 Measure →Learning Activities: add a "lighted graticule" project
- 16:2516:25, 17 May 2008 diff hist +51 N File:OLPC lighted graticule 1.jpg Original photo by wvbailey of graticule breadboard.
16 May 2008
- 22:1122:11, 16 May 2008 diff hist +2,258 Measure/Blog →Some of my ideas, thoughts, back-of-an-envelope sketches and musings regarding hardware interfaces to Measure:: thoughts
13 May 2008
- 21:0221:02, 13 May 2008 diff hist +434 Measure/Projects/Signal-Generator →Detailed circuit analysis: more
- 20:4420:44, 13 May 2008 diff hist +5,466 Measure/Projects/Signal-Generator →Detailed circuit description
- 17:4917:49, 13 May 2008 diff hist +5,607 N Measure/Projects/Signal-Generator begin to flesh this out
- 16:1616:16, 13 May 2008 diff hist +43 N File:OLPC oscillator 0.JPG Original drawing by wvbailey in Autosketch.
12 May 2008
- 14:1114:11, 12 May 2008 diff hist +204 Measure →Activities Index: add a link to Measure/Projects/Measure Temperature
- 14:0114:01, 12 May 2008 diff hist 0 m Talk:Measure magnets from www.supermagnetman.net, not .com