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Messages - HamSandwich

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Open Discussion / Re: NPD: Boss dd-7 not happy :(
« on: August 16, 2019, 10:39:42 AM »
Can you try without the Pod?

VFE Projects / Re: VFE Project DC Voltages
« on: August 06, 2019, 10:42:43 PM »
Using the Zener rating is probably OK for the VFE stuff because it uses a very particular and what looks to be an extensively thought out power system.

In general, your best bet is to take stock of the active devices and figure out what the max voltage is. For example, if you look at the Ice Cream schematic, the 15V Zener may tell you what the max voltage is, but it wonít tell you why. Look up the data sheet for the TC7662 and youíll see the max input voltage is 15V, which would be why. That chip wouldnít be happy at 18V. It is also the chip that supplies the -V for the bipolar supply.

VFE Projects / Re: VFE Project DC Voltages
« on: August 06, 2019, 10:34:56 PM »
The Ice Scream runs on a bipolar supply, so it doesnít need an artificial voltage reference, it just uses ground.

VFE Projects / Re: VFE Project DC Voltages
« on: August 06, 2019, 06:58:40 AM »
I wasnít sure if you were building from scratch, or talking about a project, but for a circuit that runs properly biased at 9V, itíll be fine at 18V, no worries there. For running the screamer at 18V, just make sure your caps at rates at 25V!

For the Zener, you donít want to go much over the rates value, or (I think) you start creating heat and noise, although the diode and inductor before May help limit that.

VFE Projects / Re: VFE Project DC Voltages
« on: August 05, 2019, 08:01:29 PM »
Iím not familiar with the VFE stuff, but maybe I can help with your 4558 question!

Itís not the best practice to run things at their rated specs. Thereís stuff out there thatíll be ok, but you do increase the risk of failure. For 4558, running it at +/- 15V is perfectly fine as Ďbreathing roomí. You could probably run it at +/-18, but at its limits, you increase your risk of failure.

The input differential is the total input voltage between the two inputs of the amplifier, not the power for the IC or the input voltage. The power for the IC is the operating voltage (+/-4V to +/-18V) and then the input (signal voltage) max is +/-15V or less depending on the what voltage your powering the IC from. Youíd have a hard time getting +/-15V swing out of your guitar without trying very hard.

Note that the +/- voltages can also be relative to ground as in your 18V and ground comment, so +/-18V could be viewed as being able to run the IC at 36V maximum.

But to answer your question, yeah youíll be fine powering it from +18V. Depends on the circuit, but to gain the benefits of increased voltage, you have to raise your bias voltage up to 9V instead of the typical 4.5V. A schematic of what circuit youíre talking about would help. Iím guessing the scream?

Open Discussion / Re: What are you playing? (games)
« on: July 28, 2019, 06:51:06 PM »
Outward is fantastic on Steam

I donít have a clue, but Iím going to say C from round was one my favorite, A was my least. Otherwise Iíll forgot when the results are in!

Open Discussion / Re: Tayda In Stock/Out of Stock???
« on: July 24, 2019, 08:42:49 PM »
Tayda has been quick to respond when emailed.

Open Discussion / Re: Just Saying -- the soapbox thread
« on: July 23, 2019, 08:49:12 PM »
JUST SAYING - I enjoyed the LOTR discourse, sad it ended before its time.

Build Reports / Re: TH Custom Madbox
« on: July 09, 2019, 01:41:04 PM »
Looks good! I like the colored jacks, where'd you pick them up from?

General Questions / Re: Layouts and hardware
« on: June 23, 2019, 10:49:36 AM »
I've been curious about a different design aspect of board mounted hardware. How do you approach how much stress you can/should put on the solder joints for knobs, switches, and pots, whether they are PCB or panel mount?

The simplest way is to loosely secure  all the hardware to the enclosure, put the PCB in place, then fasten down the hardware. Finish off by soldering. Then you know it all fits without worrying too much about it. 16mm pots worry me a little bit if they need resecuring  as they seem to be the most prone to twisting when you tighten the nut down.

Thatís assuming itís all mounted on one plane. Throw in side jacks and the whole thing is a minefield

General Questions / Re: Layouts and hardware
« on: June 21, 2019, 07:45:56 AM »
It's all about the datasheet. Pull up the measurements of each of the components in question and see if they are within a few mm of being the same height.

Open Discussion / Re: Your suggestions on overdrives for mbp
« on: June 03, 2019, 09:09:59 PM »
Another idea... Sorry, please tell me to shut up if it gets to be too much. just brainstorming a little

We all know about tubes, diodes, etc.. Maybe try some unconventional ways to create mild distortion. We know that some of the best sounding stuff comes from being inefficient or sub-optimal.

... a couple of things that I have no idea about but kinda sound like it might do that.

- Overloading a thin wire, like a fuse

- underpowered or too distant Near field wireless induction. kinda like the wireless LEDs in the video from the other post, but with audio rather than power)

Maybe two tape heads lined up without tape?

Open Discussion / Re: Your suggestions on overdrives for mbp
« on: June 02, 2019, 12:17:36 PM »
One neat idea would be if you could give access to a digitally-controlled pedal that could switch numerous characteristics at once with a small rotary. This is something that's become a bit popular in boutique stuff but hasn't happened on the DIY end./\

I like this. Be it 'characteristics' or a full on switcher-o type thing where you can go through a few different classic overdrives. Between your shop and the others you have linked from the forum, I feel like there's access to nearly any type of drive someone could ask for, so offering something with a new function like this would be a step up vs. the one-sound or topography differences. Maybe something like a Select-a-amp pedal.

Or maybe pursuing the amp-type drive subcircuit without J201's, a broader project like the ROG's Fetzer Valve but with a different device that could trickle down to various circuits. Would be more a circuit snippit or subcircuit project that could trickle down to a multitude of circuits. Of course the Fetzer valve was built in part on a large amount of other people's research, so maybe that's asking the for the impossible.

I'd also be interested in drives that do the supro/LZ1 sound (the ones without the tonebender) or the balls to the wall champ sound from the Face's Stay With Me.

I'd really love a drive that does the clipping the focusrite scarlett series of USB sound cards do when you really push them.

My biggest beef was dispatching the night king halfway through. I liked the battle of winterfell, and even how it ended, but I always thought the series was being set up as the fight for the iron throne is sort of an ongoing humans will be humans thing, but this army of ice zombies is the real threat. Like the magical fantasy aspect of the show was lesser to the political side. Made Bran and Jon and the Wallís interesting stories seem more like a side quest. Did Bran really become the three eyed raven, become humanities history book and see through time, just so he could rule a kingdom for a few decades? Seems like that could have been larger than that. But it is what it is! Entertainment.

Besides that, I donít think Dannyís character turn was bad, Iím glad Jon wasnít just handed the throne, but the outrage is ludicrous. I can understand not enjoying the direction things took or the pacing of the last couple seasons, because I had my issues with them too, but to start a petition for a rewrite of the last season with new writers? Whiny, entitled crybabies.

Yeah, how dare they demand a story that is......., good instead of mediocre. If you're promised a product, and you get something that is faulty and which does not live up to the advertisement, that now makes you a crybaby?

The point of the petition is not to have the series remade. Nobody is that stupid. The point of the petition is to show HBO that they seriously dropped the idiot ball and that their consumers are not happy with the end product.

Not a fair analogy. It was not faulty, it lived up to the advertisement. It certainly wasnít broken. It just didnít live up to your expectation. Or, frankly, mine. If they would have straight up not made the last season, or made less episodes or shorter episodes than what was promised, then Iíd get it.

Iím going to start a petition next time I make an overdrive I donít like or I have a banana thatís too ripe. Lifeís too short to be on such a high horse.

Edit: I see now you havenít watched it.

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