Search found 987 matches

by keninverse
Thu Jul 16, 2020 8:24 am
Forum: Music Tech DIY
Topic: Source for wire?
Replies: 11
Views: 279

Re: Source for wire?

http://www.apexjr.com/wire.html

silver ptfe. wets easily and won't melt. Downside is it does not flex well once a connection is soldered.
by keninverse
Tue Jun 30, 2020 2:03 pm
Forum: Music Tech DIY
Topic: Recommendations Illuminated magnifier for SMT
Replies: 17
Views: 347

Re: Recommendations Illuminated magnifier for SMT

Former petrologist. Any compound microscope with two oculars are referred to as stereoscopic microscopes or stereoscopes. I tried headsets but they gave me headaches and blurred my vision after using them for a while so I looked at stereo microscopes. Your eyes will thank you once start using a prop...
by keninverse
Thu Jun 25, 2020 8:43 pm
Forum: Music Tech DIY
Topic: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp
Replies: 236
Views: 19324

Re: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp

Do you have half the voltage at TP1? Thanks for the reply. Yes I do. I’ll pull the board and look at the uC more closely on my scope. Someone else in this thread mentioned a similar problem so I thought maybe there was some relationship but maybe it’s just a bad connection or something else. I’ll a...
by keninverse
Wed Jun 24, 2020 7:48 pm
Forum: Music Tech DIY
Topic: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp
Replies: 236
Views: 19324

Re: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp

Just got back to this and it looks like cv and gate aren’t working. Gate LED is illuminating with incoming gate but I’m guessing this is just connected directly to the socket. Link header seems to be connected properly but is there anything I could be missing?
by keninverse
Tue Jun 16, 2020 11:03 am
Forum: Music Tech DIY
Topic: R.I.P. LM3046: byebye affordable temp stabilized VCO's
Replies: 53
Views: 4891

Re: R.I.P. LM3046: byebye affordable temp stabilized VCO's

I've purchased (more than once) blacktopped ICs from UTSource. To quote the esteemed GW "Fool me once, shame on ... shame on you. Fool me... You can't get fooled again."
by keninverse
Tue Jun 16, 2020 8:07 am
Forum: Music Tech DIY
Topic: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp
Replies: 236
Views: 19324

Re: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp

Altitude909 wrote:
Mon Jun 15, 2020 4:36 pm
You should only pick one range
...and rereading the initial post this makes absolute sense. thanks for the guidance!
by keninverse
Mon Jun 15, 2020 2:48 pm
Forum: Music Tech DIY
Topic: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp
Replies: 236
Views: 19324

Re: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp

Altitude909 wrote:
Wed Jun 10, 2020 4:16 pm
did you set the root note? it wont play out of range notes so you have to set the range to your liking
I did the go through the CV range configuration but perhaps I didn't do this properly...pressed the button and chose note 0, 12, 24 and 36.
am I missing something?
by keninverse
Wed Jun 10, 2020 1:57 pm
Forum: Music Tech DIY
Topic: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp
Replies: 236
Views: 19324

Re: [BUILD] JasperIN - Midi and CV/Gate Input for Jasper/Wasp

This has been sitting in the box of the shamefully unfinished but slowly making my way through some things after a long hiatus... I just put everything together and receiving midi properly but the CV/Gate in is not working with the exception of the gate LED. There are a few mentions of this in the t...
by keninverse
Thu May 14, 2020 10:36 am
Forum: Music Tech DIY
Topic: How to remove excess solder paste from an SMD board?
Replies: 18
Views: 393

Re: How to remove excess solder paste from an SMD board?

MSDS shows containing N-methyl-2-pyrrolidone which is used as a no-clean flux used by many solder companies like Kester. How you clean it is debatable and as altitude stated the manufacturer may have an answer which will most likely be a specific product (e.g. some type of alcohol plus a saponifier)...
by keninverse
Fri May 01, 2020 10:42 am
Forum: Music Tech DIY
Topic: Organising your DIY components
Replies: 19
Views: 678

Re: Organising your DIY components

2.5"x2.5" 4mil bags for anything passive and kept in a mobile parts organizer similar to the yellow black one posted...so I can watch TV and hang out with fam while stuffing boards. Pots are bought in bulk so they stay in trays. ICs are kept in ESD safe cardboard boxes and distributed and ordered by...
by keninverse
Fri Apr 24, 2020 8:46 am
Forum: Music Tech DIY
Topic: Shipment race!
Replies: 27
Views: 1059

Re: Shipment race!

Mouser ships that fastest for anyone near Texas and particularly in Texas. I usually submit orders between 3-5pm on Thursdays and they're at the office by noon Friday. Hard to beat that...especially at $7.99 for shipping.
by keninverse
Mon Apr 20, 2020 1:59 pm
Forum: Music Tech DIY
Topic: Vactrol in Europe
Replies: 10
Views: 434

Re: Vactrol in Europe

CabinTech Global is the cheapest I've seen and ship worldwide.

cabintechglobal.com/semi
by keninverse
Thu Feb 20, 2020 9:52 am
Forum: Music Tech DIY
Topic: Decoupling Cap Position/ Type
Replies: 26
Views: 1179

Re: Decoupling Cap Position/ Type

10-100uF (I use 22uF) and 10-100nF for just upon power entry to the the board. Just 10-100nF for each V+/- pin supplying power to the IC. These should be immediately next to the pin.
by keninverse
Fri Feb 07, 2020 9:50 am
Forum: Music Tech DIY
Topic: Multimeter suggestions?
Replies: 28
Views: 1448

Re: Multimeter suggestions?

Third recommendation for brymen but I have a 869s. Great meter for the price. I bought a fluke 87v for a price I couldn't refuse and the brymen performs the same. The spec sheet shows the brymen is more accurate and has higher cat rating but I don't notice it for the work I do.
by keninverse
Thu Jan 23, 2020 10:48 am
Forum: Music Tech DIY
Topic: EL Wire for lighting case
Replies: 8
Views: 374

Re: EL Wire for lighting case

Not sure about burning down your gear or house with EL Wire. However those inverters are noisy as all get out, the wire is so fragile that they break if you just look at them wrong and there's always the possibility of shock since it's relatively high AC. The first point alone will drive you absolut...
by keninverse
Mon Jan 13, 2020 10:25 am
Forum: Music Tech DIY
Topic: Circuit Abbey Tripfire What IC is U6?
Replies: 1
Views: 197

Re: Circuit Abbey Tripfire What IC is U6?

This is the Eagle BOM output I got from Tim himself a while back...U6 should be the attiny.
TripFireRevC_BOM.pdf
by keninverse
Tue Nov 19, 2019 10:42 am
Forum: Music Tech DIY
Topic: PURPLE (violet) LEDs
Replies: 10
Views: 723

At <400nm it's gonna be tough to judge brightness of an LED and whether you're being overexposed. I know some people don't tire from staring at blues but if I'm sitting in front of blue and white LEDs for a few hours my eyes are tired. My understanding was that overexposure can lead to early macular...
by keninverse
Mon Nov 18, 2019 9:31 am
Forum: Music Tech DIY
Topic: PURPLE (violet) LEDs
Replies: 10
Views: 723

Because staring at near UV light is bad for your eyes. That's why some people hate blue LEDs.
by keninverse
Fri Nov 08, 2019 9:44 am
Forum: Music Tech DIY
Topic: Help with EFM 3544 VCO - FM and Sine shaper
Replies: 9
Views: 733

Yes they should be matched but are you sure there's isn't a glitch in the tri?
by keninverse
Mon Nov 04, 2019 10:20 am
Forum: Music Tech DIY
Topic: 1/4" TRS female jack through 3/8" plywood?
Replies: 16
Views: 850

+1 for forstner bit or if you have a router then a spiral bit with a template.
by keninverse
Tue Oct 29, 2019 8:25 am
Forum: Music Tech DIY
Topic: +15/-15V 3A power supply?
Replies: 7
Views: 890

This is fine if you're feeding a +/-15V modular. I'm willing to bet that the trimmers can also adjust the voltage.
by keninverse
Fri Oct 25, 2019 9:31 am
Forum: Music Tech DIY
Topic: Desoldering braid that doesn’t suck
Replies: 24
Views: 828

I use unfluxed braid and just use tacky flux to help it out. I've never been happy with the braids and scorched some boards in the past when using cheap or old fluxed braids.
by keninverse
Thu Oct 17, 2019 8:38 am
Forum: Music Tech DIY
Topic: [IN STOCK] NEW L-1 Stereo Mixers
Replies: 28
Views: 4230

Think of it in terms of mic placement in a stereo field. I have no experience with the module but if L-1 mentioned a -4.5dB pan law so at center it just sends -4.5dB equally to its bus.
by keninverse
Mon Oct 07, 2019 11:45 am
Forum: Music Tech DIY
Topic: Speed/decay-tail of VTL5C3/2 (particularly Xvive)
Replies: 25
Views: 2001

This is my experience too. Even excelitas vactrols don't seem to behave as well as the Vactec ones for pinging LPGs. Thanks for sharing this. My experience has been the opposite but also anecdotal. Never had any problems with excelitas/perkin elmer. I gave up on the xvive and started using my huge ...
by keninverse
Fri Oct 04, 2019 9:07 am
Forum: Music Tech DIY
Topic: Pedal power
Replies: 4
Views: 393

Re: Pedal power

The guitarist in my band really needs a nice clean power supply for his pedalboard. Does anyone know of a kit or PCB/BOM for a pedalboard supply? I like isolated supplies with individual regulators. I couldn't find a RG Keen Spider-like supply so I just laid all the parts on perfboard and used this...

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