LVL1 - User contributions [en]

Acoustic Panels

2016-04-05T00:54:30Z

TAG:

[[File:acoustic_panel.jpg]]

In the process of improving the acoustics of the LVL1 Classroom we developed some acoustic panels made largely from reclaimed materials. The frame is made from reclaimed wood from pallets, the cover is a reclaimed coffee bag and they are filled with denim insulation that contains 80% post-consumer recycled content.

Details on the insulation used can be found [http://bondedlogic.com/pdf/denim-insulation/UltraTouch-Denim-Spec-Sheet.pdf here]

The coffee bags are sprayed with the flame retardant found [http://www.fireretardantsinc.com/fpr/fabric_burn_barrier.html here]

Here are the acoustic properties:

{| class="wikitable"
|-
|+ ABSORPTION COEFFICIENTS @ OCTAVE BAND FREQUENCIES (HZ)
|-
!THICKNESS
! 125
! 250
! 500
! 1,000
! 2,000
! 4,000
! NRC/STC
|-
|3.5”
|0.95
| 1.3
| 1.19
| 1.08
| 1.02
| 1.0
| 1.15 NRC
|-
|3.5”
| 21
| 40
| 48
| 52
| 46
| 48
| 45 STC
|}

To get an feel for how these panels compare to other insulation options the following link from ATS Acoustics is helpful: [http://www.atsacoustics.com/page--Selecting-the-Right-Acoustic-Material--ac.html Selecting the Right Acoustic material]

For even more data on absorption co-efficients check out [http://www.bobgolds.com/AbsorptionCoefficients.htm Bob Golds Apsorption Coefficient Table]

As the data indicates, the Ultratouch insulation compares quite favorably to most alternatives even edging out 4" Owens Corning 703 which is a top choice for acoustic panels.

To get an idea for how many panels it would take to achieve the desired reverberation time for a room, try the [http://www.atsacoustics.com/page--Free-Online-Room-Acoustics-Analysis--ora.html ATS Acoustics Calculator] and select the 2' x 4' option, 4" thick.

Acoustic Panels

2016-04-05T00:50:55Z

TAG:

Acoustic Panels

2016-04-05T00:45:52Z

TAG: Created page with "File:acoustic_panel.jpg In the process of improving the acoustics of the LVL1 Classroom we developed some acoustic panels made largely from reclaimed materials. The fram..."

File:Acoustic panel.jpg

2016-04-05T00:15:15Z

TAG: TAG uploaded a new version of File:Acoustic panel.jpg

File:Acoustic panel.jpg

2016-04-05T00:13:59Z

TAG:

Louisville Soundbuilders

2016-04-05T00:09:15Z

TAG:

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[https://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640 Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard]] - Isotope 192

[[Acoustic Panels]]

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Arduino MIDI NES APU Shield]]

[[Arduino Eurorack Shield]]

[[Chips]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]

Isomorphic Keyboard

2016-01-28T22:04:17Z

TAG:

Isotope 192

[[File:Velocity.JPG]]

[[File:Iso192 PCB Top.JPG]]

[[File:Iso192 PCB Bottom.JPG]]

[[File:Iso192 PCB Top populated.JPG]]

[[File:Iso 192.pdf]]

PCB stacking connector: AMP 1241152-8

Tactile Switch: Panasonic EVQ-Q2B03W

Cherry Switch: MX1A-11

[[File:Iso top.jpg]]

[[File:Iso back.jpg]]

File:Iso back.jpg

2016-01-28T22:03:22Z

TAG: TAG uploaded a new version of File:Iso back.jpg

Isomorphic Keyboard

2016-01-28T22:02:16Z

TAG:

File:Iso top.jpg

2016-01-28T21:59:42Z

TAG: TAG uploaded a new version of File:Iso top.jpg

Isomorphic Keyboard

2016-01-28T21:13:11Z

TAG:

File:Iso keys.jpg

2016-01-28T21:11:06Z

TAG: TAG uploaded a new version of File:Iso keys.jpg

File:Iso back.jpg

2016-01-28T21:10:20Z

TAG:

File:Iso keys.jpg

2016-01-28T21:09:36Z

TAG:

File:Iso top.jpg

2016-01-28T21:08:56Z

TAG:

Isomorphic Keyboard

2015-01-29T13:15:35Z

TAG:

Louisville Soundbuilders

2015-01-29T13:15:04Z

TAG:

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[https://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640 Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard]] - Isotope 192

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Arduino MIDI NES APU Shield]]

[[Arduino Eurorack Shield]]

[[Chips]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]

Louisville Soundbuilders

2015-01-29T13:14:14Z

TAG:

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[https://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640 Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard - Isotope 192]]

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Arduino MIDI NES APU Shield]]

[[Arduino Eurorack Shield]]

[[Chips]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]

Chips

2014-09-16T01:57:05Z

TAG: Created page with "MM74c174N (3) DM7483N DM8563N N82S83 N7483B N7483B SSM2120 6n138 RC5532 (2) LM358N DM7483N SN7475N (2) MC14015B 4136CP (3) F 7420 276-1809 9318 PC F 7536 (3) 7541 SN7490AN SW ..."

MM74c174N (3)
DM7483N
DM8563N
N82S83
N7483B
N7483B
SSM2120
6n138
RC5532 (2)
LM358N
DM7483N
SN7475N (2)
MC14015B
4136CP (3)
F 7420 276-1809
9318 PC F 7536 (3)
7541 SN7490AN
SW 7442-N 7347
DM8020N NS SN7420N 02
MC1408-8N 7918
ICL8038CC 7350
MC14070B CP 8038
SB8229 DM74LS347N IDM29901NC
RS74193N
4136CP 3878
LM386N
RS74C02N
RS74C193N
N4049B
S1L4050AE 7420
MM74C151N
84151 7925
mm74C174N
SIL4029BE (2)
MC14042B
CD4012AE
RS74C00N
MM5607AN CD4007AE
MM74C00N
N4049B
MC14042B
MC14051B
MM74C173J CD4076BCJ
sIL4029BE
CD4016
N4013A
CD4052BCN MM5652BN
MC14042B (2)
SCL4008BE
MM74C174N CD40174BCN (2)
4136CP (2)
CD4066BCN
CD4021BE (2)
MC14008CL
MC14001B
CM4013
CD4016 (2)
MK50240N
C1408-8N
CD4066BCN
RS4013
MM74C174N
CD4001AE
MC14042B (2)
C7437P
7822
SCL4013AE
DM75494N
4027BPC
N7483B
MC14021B
SCL4051BE (2)
CD40174BCN
4136CP
4051PC
4136CP
RC4136DB
CD40174BCN
SCL4051BE
LM3900N
RS4013
MC14001B
MC14011B
CD4024BCN
CD4024BE
CM4051AE
CD4016
SCL4051BE
CM4049AE

Louisville Soundbuilders

2014-09-16T01:15:14Z

TAG:

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[https://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640 Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard]]

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Arduino MIDI NES APU Shield]]

[[Arduino Eurorack Shield]]

[[Chips]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]

01/28/2014

2014-01-28T21:35:08Z

TAG: /* Upcoming Workshops and Events */

= First time Visitor Info =
* Prime Directive: '''Be Excellent to Each Other'''
*PARK ONLY IN THE ORI LOT OR ON THE STREET
** If you park in our neighbors private lot, they will block you in for fun.
*Waivers of Liability - Please sign if you have not already
*Our website / calendar is www.lvl1.org
*Sign up for our Google Group discussion list
** https://groups.google.com/forum/?fromgroups#!forum/lvl1
*You can find all of our Meeting Minutes on our wiki
*5 Minute Maintenance and Cleaning

= Equipment and Supplies Wanted =
*(Muddy Tech) - Computers P4 or higher and LCD Monitors
**Posted 11/13/12
*(Tim) - 1/4" copper fittings
** 5 x 100 lb. Propane Tanks
** 1/4" copper tubing at least 2' long.
** posted 6/11/2013
*(Josh) - Red Bull Cans
** Posted 10/22
*(Josh) - Golf Cart or forklift motor Controller (Any condition)
** Posted 11/12
*(Divinity) - Pipes, gauges, spikes -items to be used for steampunk props for photoshoot for graphic novel - pre-made steampunk items for borrow also ok and appreciated + Lots of candles
*(Brad L.) - Needs to borrow Syma Quadracopters
** Posted 1/14

= Space Upgrades =

= Space Downgrades =
* The quickest way to get something fixed is to let us know that it is broken! Send broken equipment reports to Broken@lvl1.org
** This includes supplies like toilet paper and soap!

= Regular Meetups =
*'''MONDAY'''
**[[Louisville Soundbuilders|Sound Builders]] (fortnightly Mondays, next 2/3 8pm)
** Rope Work and Vertical Caving (1st Monday of the Month next 2/3 @ 6pm)
** Caving Special topics Meetup (3rd Monday of the Month next 2/17 @ 6pm)
*'''TUESDAY'''
**LVL1 Open Meeting & Making (Tuesday 8pm)
*'''WEDNESDAY'''
**MakerEd Educators MeetUp (1st Wed of the Month 2/5 @ 7pm)
**KYOSS Monthly Meeting (2nd Wed of the Month 2/12@ 6:30pm) http://kyoss.org/
**Muddytech SIG (3rd Wed of the Month 2/19)
**JSLou Meetup (3rd Wed of the Month 2/19) http://jslou.org/
**Java Workshop (4th Wed of the Month 2/26 @ 7pm)
*'''THURSDAY'''
**Muddytech Computer training (6pm upstairs)
***Looking for students
** Sewing Workshop (3rd Thurs. of the Month @ 7pm, 2/20)
*** Bring in an unfinished project, start something new, learn and sew it up!
** Drone Meetup (4th Thurs. of the Month @ 8pm, 2/21)
*** QUACC tickle your interest in Multirotors, UAVs, RC, or any other type of drone? Show up on the 4th Thursday!
*'''FRIDAY'''
**Irregular Movie and Open Build Night (~7pm)
*'''SUNDAY'''
**[[Game Dev|Game Dev Group]] (12pm)

= Upcoming Workshops and Events =
* Patrick's Ongoing Welding Workshops
* January Makership Deadline - 1/31 at 11:59pm
** More info about the Makership program at http://www.lvl1.org/makerships
* Sumobot Open Office Hours - 2/4 and 2/18 6-8 pm
** Brian has graciously agreed to host 2 sumobot meetings to support GE's internal sumobot competition for engineers week. Anyone interested in discussing sumobots and helping a group of sumo newbies is welcome.
* How to vectorize images and do cool things with them - Feb 7th at 6pm
** This will be a quick workshop on taking arbitrary images, turning them into vectors, and then using them on machines like the vinyl cutter and laser cutter.
* GE / LVL1 Appliance Hackathon 2/8 10am - 2/9
** Free Raspberry Pi and schwag, Prizes of $500, $250, $100
** Email Myles Caley at GE: myles.caley@gmail.com to register and sign NDA
** Registration deadline 1/31
* WEP Cracking workshop - Feb 15th, 3pm
** Get a USB Wireless Adapter, Kali Linux DVD, and learn how to crack WEP!
** Eventbrite to emerge
* Chicken Husbandry - Feb 22nd, 6pm - 8pm
** Details to hatch soon.

= Project Roll Call =

= Meeting Notes =
* Attendance:
* Meeting Start:
* Meeting Stop:
* Dinner:
* Tour Guide:
* Notes Taken by: Nathan A.

Louisville Soundbuilders

2013-09-27T12:49:08Z

TAG:

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[https://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640 Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard]]

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Arduino MIDI NES APU Shield]]

[[Arduino Eurorack Shield]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]

Isomorphic Keyboard

2013-03-07T21:11:39Z

TAG:

Stub for more info

[[File:Velocity.JPG]]

[[File:Iso192 PCB Top.JPG]]

[[File:Iso192 PCB Bottom.JPG]]

[[File:Iso192 PCB Top populated.JPG]]

[[File:Iso 192.pdf]]

PCB stacking connector: AMP 1241152-8

Tactile Switch: Panasonic EVQ-Q2B03W

Cherry Switch: MX1A-11

Louisville Soundbuilders

2013-03-07T21:01:31Z

TAG:

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[https://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640 Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard]]

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Three way PA speakers]]

[[Arduino MIDI NES APU Shield]]

[[Arduino Eurorack Shield]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]

Louisville Soundbuilders

2013-03-07T21:01:10Z

TAG:

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[https://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640|Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard]]

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Three way PA speakers]]

[[Arduino MIDI NES APU Shield]]

[[Arduino Eurorack Shield]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]

Isomorphic Keyboard

2013-03-07T20:57:58Z

TAG:

File:Iso 192.pdf

2013-03-07T20:57:42Z

TAG:

Isomorphic Keyboard

2013-03-07T20:53:38Z

TAG:

Stub for more info

[[File:Velocity.JPG]]

[[File:Iso192 PCB Top.JPG]]

[[File:Iso192 PCB Bottom.JPG]]

[[File:Iso192 PCB Top populated.JPG]]

PCB stacking connector: AMP 1241152-8

Tactile Switch: Panasonic EVQ-Q2B03W

File:Iso192 PCB Top populated.JPG

2013-03-07T20:53:14Z

TAG:

Isomorphic Keyboard

2013-03-07T20:52:44Z

TAG:

Stub for more info

[[File:Velocity.JPG]]

[[File:Iso192 PCB Top.JPG]]

[[File:Iso192 PCB Bottom.JPG]]

PCB stacking connector: AMP 1241152-8

Tactile Switch: Panasonic EVQ-Q2B03W

File:Iso192 PCB Bottom.JPG

2013-03-07T20:52:15Z

TAG:

Isomorphic Keyboard

2013-03-07T20:51:46Z

TAG:

Stub for more info

[[File:Velocity.JPG]]

[[File:Iso192 PCB Top.JPG]]

PCB stacking connector: AMP 1241152-8

Tactile Switch: Panasonic EVQ-Q2B03W

Isomorphic Keyboard

2013-03-07T20:50:52Z

TAG:

Stub for more info

[[File:Velocity.JPG]]

[[File:Iso192 PCB Top.JPG]]

PCB stacking connector: AMP 1241152-8

Isomorphic Keyboard

2013-03-07T20:48:47Z

TAG:

Stub for more info

[[File:velocity.jpg]]

[[File:Iso192 PCB Top.JPG]]

PCB stacking connector: AMP 1241152-8

Isomorphic Keyboard

2013-03-07T20:48:13Z

TAG:

Stub for more info

[[File:Velocity.jpg]]

[[File:Iso192 PCB Top.JPG]]

PCB stacking connector: AMP 1241152-8

File:Iso192 PCB Top.JPG

2013-03-07T20:47:12Z

TAG:

File:Velocity.JPG

2013-03-07T20:45:43Z

TAG:

Isomorphic Keyboard

2013-03-07T20:06:09Z

TAG:

Stub for more info

PCB stacking connector: AMP 1241152-8

Forbes Tube Theremin

2013-03-07T15:44:20Z

TAG:

[[File:theremin.jpg]]

I started this project to build a tube theremin about 10 years ago. I started on the Schematics page of thereminworld.com. There is/was a gif schematic and a text file with some instructions.

I built the theremin but at the time I couldn't get the antenna sensitivity right. The whole pitch range was within a few inches and I hadn't even messed with the volume antenna. Several years later I came across [http://mrr3000gt.mystarband.net/MRT/index.htm this website] that has a lot more details on building the doug forbes theremin than the original article. Turns out the you have to use copper plates as antennas with this design (I had made up some more traditional theremin antennas). Once I made up some copper plate antennas and changed a capacitor value as recommended in the 'build notes' section, the pitch antenna worked great.

I'm still having issues with the volume antenna. The frequency of the fixed oscillator is coupled in with the variable cap in the bandpass filter, so when you go to tune the volume antenna, the fixed oscillator freq varies.

UPDATE:

I have my volume antenna working now with a range of about 12-14". That isn't anywhere close to the range that the pitch antenna has, but that seems to be the nature of the design and I'm satisfied. I ended up operating the volume oscillator at about 1.3 MHz using the original cap value from the schematic in the oscillator (I had a larger cap in there in order to achieve 770kHz like the original designer, but his inductor must have been a much higher value than mine). I also reduced the caps going to and from the LC bandpass from 15pF to 3.3pF and added a pot on the grid of the VCA to tweak the threshold. See markup below for changes from the original schematic.

[[File:Tubether_schm_(2).jpg]]

[[File:theremin_bottom.jpg]]

Forbes Tube Theremin

2013-03-07T15:40:00Z

TAG:

[[File:theremin.jpg]]

I started this project to build a tube theremin about 10 years ago. I started on the Schematics page of thereminworld.com. There is/was a gif schematic and a text file with some instructions.

I built the theremin but at the time I couldn't get the antenna sensitivity right. The whole pitch range was within a few inches and I hadn't even messed with the volume antenna. Several years later I came across [http://mrr3000gt.mystarband.net/MRT/index.htm this website] that has a lot more details on building the doug forbes theremin than the original article. Turns out the you have to use copper plates as antennas with this design (I had made up some more traditional theremin antennas). Once I made up some copper plate antennas and changed a capacitor value as recommended in the 'build notes' section, the pitch antenna worked great.

I'm still having issues with the volume antenna. The frequency of the fixed oscillator is coupled in with the variable cap in the bandpass filter, so when you go to tune the volume antenna, the fixed oscillator freq varies.

UPDATE:

I have my volume antenna working now with a range of about 12-14". That isn't anywhere close to the range that the pitch antenna has, but that seems to be the nature of the design and I'm satisfied. I ended up operating the volume oscillator at about 1.3 MHz using the original cap value from the schematic in the oscillator (I had a larger cap in there in order to achieve 770kHz like the original designer, but his inductor must have been a much higher value than mine). I also reduced the caps going to and from the LC bandpass from 15pF to 3.3pF and added a pot on the grid of the VCA to tweak the threshold.

[[File:Tubether_schm_(2).jpg]]

[[File:theremin_bottom.jpg]]

File:Tubether schm (2).jpg

2013-03-07T15:39:16Z

TAG:

Forbes Tube Theremin

2013-03-07T15:37:50Z

TAG:

Arduino Eurorack Shield

2013-03-07T15:31:55Z

TAG: Created page with "[http://upverter.com/LVL1Soundbuilders/31a559d116cb02a3/Eurorack-Arduino-Shield/ Upverter project link]"

[http://upverter.com/LVL1Soundbuilders/31a559d116cb02a3/Eurorack-Arduino-Shield/ Upverter project link]

Arduino MIDI NES APU Shield

2013-03-07T15:28:52Z

TAG: Created page with "[http://upverter.com/gillspice/2f49ddadc88376bb/Arduino-MIDI-NES-APU-Shield/ Link to Upverter project]"

[http://upverter.com/gillspice/2f49ddadc88376bb/Arduino-MIDI-NES-APU-Shield/ Link to Upverter project]

Louisville Soundbuilders

2013-03-07T15:28:27Z

TAG: /* Projects */

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[http://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640|Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard]]

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Three way PA speakers]]

[[Arduino MIDI NES APU Shield]]

[[Arduino Eurorack Shield]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]

Three way PA speakers

2013-03-07T14:38:09Z

TAG:

A project for small 3-way PA speakers based on the following components:

[http://www.mcmelectronics.com/product/MCM-AUDIO-SELECT-55-2981-/55-2981 10 Inch Die Cast Professional Woofer - 250W RMS MCM Part #: 55-2981]

[http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-015 Dayton Audio PA165-8 6 Inch PA Driver Speaker]

[http://www.mcmelectronics.com/product/MCM-AUDIO-SELECT-53-1230-/53-1230 1.35" Compression Horn Tweeter - 4.3" x 10.4" Horn 80W RMS MCM Part #: 53-1230]

Three way PA speakers

2013-03-07T14:37:32Z

TAG:

A project for small 3-way PA speakers based on the following components:

[http://www.mcmelectronics.com/product/MCM-AUDIO-SELECT-55-2981-/55-2981 10 Inch Die Cast Professional Woofer - 250W RMS MCM Part #: 55-2981]

[http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-015 Dayton Audio PA165-8 6 Inch PA Driver Speaker]

[http://www.mcmelectronics.com/product/MCM-AUDIO-SELECT-53-1230-/53-1230 1.35'' Compression Horn Tweeter - 4.3" x 10.4" Horn 80W RMS MCM Part #: 53-1230]

Three way PA speakers

2013-03-07T14:19:21Z

TAG:

Three way PA speakers

2013-03-07T14:17:37Z

TAG: Created page with "A project for small 3-way PA speakers based on the following components: [http://www.mcmelectronics.com/product/MCM-AUDIO-SELECT-55-2981-/55-2981]"

A project for small 3-way PA speakers based on the following components:

[http://www.mcmelectronics.com/product/MCM-AUDIO-SELECT-55-2981-/55-2981]

Louisville Soundbuilders

2013-03-07T14:15:48Z

TAG:

[[File:Louisville_Soundbuilders.jpeg]]

Louisville Soundbuilders meets every other Monday at 8pm. Check our [[Calendar]] to find out when the next meeting is.

[http://www.facebook.com/pages/Louisville-Soundbuilders/161963057154640|Louisville Soundbuilders Facebook Group]

Anyone with an interest in synthesizers, circuitbending, and general DIY electronic music is welcome!

Every meeting we gather together to experiment with circuitbending, synthesizer design, and synthesizer repair. The meeting is very informal and encourages people to bring things to work on or just hang out and talk about gear.

Bring:
*Electronic instruments to show off and work on
*Cheap battery powered electronic toy(s) for circuitbending

== Projects ==
[[Isomorphic Keyboard]]

[[Forbes Tube Theremin]]

Fender PA-100 to Twin Reverb conversion

Midibox Sequencer

Midibox SID

Midibox FM

[[Pushpin - Midi control for Gameboy color]]

TR-808 Bass Drum clone module

Stromberg-Carlson sau-22 Tube PA restoration/modification

Arduino DCO

Farfisa Combo Compact Midi retrofit

[[Three way PA speakers]]

== Resources ==

[http://www.soundonsound.com/search?url=%2Fsearch&Keyword=%22synth+secrets%22&Words=All&Summary=Yes Sound on Sound "Synth Secrets" series of articles]

[http://ubu.com/emr/index.html UbuWed Electronic Music Resources]

[http://www.anti-theory.com/soundart/circuitbend/ Reed Ghazala's Art of Circuit-bending]

[http://www.oscillateur.com/circuitbending/schematics Speak & Spell Circuit-bending for dummies]

[http://www.oscillateur.com/circuitbending/faq Circuit-bending FAQ]

[http://hackaday.com/2011/01/11/intro-to-circuit-bending/ Hack-a-Day Intro to Circuit-bending]

[http://users.ece.gatech.edu/~lanterma/ems/ ECE4893A Electronics for Music Synthesists: Semester's worth of video lectures and more]

[http://www.reliablecapacitors.com/pickcap.htm Picking Capacitors]

[http://my.execpc.com/~endlr/ Introduction to Capacitors]

[http://www.dancetech.com/index.cfm?loading=pa&pa_loader=176 DIY Downloadable Speaker Cabinet Designs]