$2 for 10 PCBs & 24 Hour Production: https://jlcpcb.com
https://www.patreon.com/julian256
The digital noise generator circuit (on breadboard) was highly susceptible to interference, which led to some excellent circuit bending. Will a PCB with a ground plane fix the interference "problem"?
ETI Vocoder constructional project reproduced with kind permission of Wimborne Publishing Ltd. http://www.epemag.com
https://www.patreon.com/julian256
The digital noise generator circuit (on breadboard) was highly susceptible to interference, which led to some excellent circuit bending. Will a PCB with a ground plane fix the interference "problem"?
ETI Vocoder constructional project reproduced with kind permission of Wimborne Publishing Ltd. http://www.epemag.com
I made the 909 version of this with 2x 4006 chips and no interference on my breadboard
Where is Gerber files
I know I’m late to the game… but… if you leave long Legs on all your components sort of as on the breadboard… you may get fun things happening. Hmmmmmmmmm … … you might even bypass some traces, making long airborne runs… as on the breadboard. Hmmmmmmm 🤔🧐🤷🏻♂️✨ have fun!
It was talking…
Naice your video am happy super
Is this deterministic noise or there is a chaos in the circuit making the noise "white" and unpredictable?
I can't determine this at first glance. And the circuit is not very explanatory.
When you seal a vessel you typically seal moisture in not out, good on them for being aware of this and caring enough to counter it.
Are you having good luck with those headphone jacks? I ordered in 10 of them a couple of years back, and then the quality of the traces was so poor that if my soldering iron drifted over 300C the traces came up and I had to figure another way to get the electricity to the pins. I used bodge wires to go from the pin over the back then to the tab that hooked to the desired part of the earphone plug. Don't think I will try any more of them, even with my new digital soldering iron I just don't trust that board any more.
you need 2 ics one transtor and a awful amount of passives for a white noize generator? come one 2 transistors 2 resistors and one cap do the job equally good… i build that
on a 2 by 3 cm piece of perf board
If you can put up with always getting exactly the same pseudo-random noise sequence on each power-up, you can just program a PIC chip to simulate a 32-bit shift register with two of its outputs xored to its input. I know 'cos I did exactly that.
The final circuit has just the 8-pin PIC and a small speaker connected between one of its output pins (ie a pin programmed to be an output) and ground, with an 18650 as the power supply (since the PIC I used will work down to around 2 volts). If you really, desperately need to filter out any DC, then you can add a small capacitor between the output pin and one speaker lead (or the amplifier, if you need a loud hiss).
"Tuning" the circuit to give a slightly deeper sounding hiss involves nothing more than inserting a few "nop" instructions (no operation = do nothing) before the jump back to the start of the loop.
Re: Short solder. I usually try using a pair of needle-nose pliers to hold the solder when it gets that short. You can also try resting the last scrap against the pin you're going to solder and applying the iron. (Yes, I'm a bit of a Scrooge too, when it comes to not wasting even that last tiny scrap of solder) 🙂
"Come sleep on the beach, keep within my reach"
Cool use of the tie clip! Love it! Say I was going to order some PCB's from jlcpcb but when it came check out, the shipping seemed rather high, well extremely high compared to most of the things I get from China and Laos, that region. Am I missing a button or something, it's not like I need overnight or even rush delivery, a slow-boat from china would work for most of my needs, seems my urge for speed has gone by the wayside in my old age, and the need for funds far outweigh such needs for speed. They look to be great little boards but it's sort of like the adds on Ebay showing a nice phone for 6 bucks then when you see the shipping is $300.00 you sort of understand that it is really click bait.
Disappointed not to see mounting holes, silk screen markings for the power ("+V" & "gnd") and output ("out" & "gnd") connectors, bulk decoupling for the board, and individual decoupling for each chip. Weird that the two chip footprints are using very different pads. Test point for the oscilator output?
Touching things adds capacitance to them, especially when touching multiple nodes at once. You're adding parasitics and the frequency changes. You can add a couple nF to a node with just a finger.
Emmmmm You did't show the noise wave form on the scope ? A spectrum analyzer would be interesting to see.
Iv have never gotten a pen from jlcpcb. Is it random if you get one?