[ORDER] SNOW - Analog video Noise!
Category: Unknown · Tags: — · Posts: 70
#1 — reverselandfill · 2021-02-02
Description:
2 channel analog video (transistor based) noise source, with some nice additions such as offset and volume controls, highpass filtered outputs and a comparator (with switchable noise channel) to create very interesting chaotic textures (from starfields to blizzards)
Features:
2x noise channels with Offset and Volume pots
1x comparator (selectable noise channel) with Bias pot
2x offset noise outputs
2x filtered outputs
1x comparator output
BOM:
https://www.reverselandfill.org/diy/snow-analog-video-noise/Link: SNOW – Analog video noise – Reverselandfill
Prices:
PCB set : 40,- euro
Full kit: 130,- euro
Module: 175,- euro
Shipping depends on where you live and what you order
available sets: 8
I’ll order enough new sets this week, which will be available in about 2 weeks
Order list for the SNOW module:VanTa : 1x kit - shippedrempesm: 1x PCB set - shippedjwsmithwick1: 1x module - shippeddondon 1x kit - shippedRik_bS: various - shippedVisibleSignals: 1x - shippedRobbertunist: 1x PCB set - shippedtransistorcat: 1x PCB set - shippedGijsvO: 1x kit - shipped
eraxeg: 1x PCB set - contacted cburst: 1x PCB set - shippedanalogmonster: 1x PCB set - shipped
LauLindqvist: 1x pcb set - contacted
fuzzy_pauze: 1x PCB set - contacted claytron: 1x kit - shippedbentoncbainbridge: 1x module - payed
cinema_av: 1x PCB set - contacted jsonpayload: 1x module - payedallthesixes666: 1x PCB set - shippedMarizu: 1x PCB set - shipped
Hewed: 1x PCB set - contacted Heythony: 1x kit - shipped
Tronotape: 1x PCB set - contacted Iscariot: 1x PCB set - shipped
#2 — VanTa · 2021-02-02
Uhuuuu!
Count one kit for me
#3 — rempesm · 2021-02-02
Can you put me down for 1x PCB set?
#4 — jwsmithwick1 · 2021-02-02
I would like to purchase one assembled.
#5 — Fox · 2021-02-03
Glad it got worked out! Too bad it was due to a bad 6172…
#6 — dondon · 2021-02-03
1x kit for me please!
#7 — Rik_bS · 2021-02-03
Put me down for a PCB set.
Will happily combine postage to Australia if anyone else down here is interested… might buy a few other PCBs at the same time too
#8 — Robbertunist · 2021-02-03
I’d happily piggyback a PCB/Panel set with you Vanta if that’s ok with you
Please count me in for a PCB/Panel set @reverselandfill
#9 — transistorcat · 2021-02-03
I would love a PCB set
#10 — reverselandfill · 2021-02-03
@transistorcat When there are transistors envolved…
BOM is added on my site
https://www.reverselandfill.org/diy/snow-analog-video-noise/Link: SNOW – Analog video noise – Reverselandfill
I’ll make a buildguide soon and I have a resistor placement helper ready. (vertical resistors!)
There are some mods possible with the filter values and there is a jumper for a possible
comparator CV input
#11 — GijsvO · 2021-02-03
I’d like a full kit, please, Martijn! You can make an invoice and calculate shipping as usual
.
#12 — Rik_bS · 2021-02-04
FYI I only need PCB set, not a kit
#13 — eraxeg · 2021-02-04
I would like to order a pcb+panel set!
#14 — cburst · 2021-02-04
I’d like to order a pcb+panel set.
Let me know how to proceed with the transaction!
#15 — reverselandfill · 2021-02-04
I’m mostly listing the demand right now, so I know what amounts to order next.
I have 8 sets available now, and I’m ordering parts for those this week.
When I have received all parts, I’ll contact the first 8 people and ship them out.
When the new pcb batch arrives, I’ll contact everybody on this list.
(this will take about 2 weeks I think, I’ll keep you up to date!)
#16 — Analogmonster · 2021-02-05
I would like 1x pcb set please thanks
#17 — LauLindqvist · 2021-02-05
I want a pcp set as well, but might need a few other pcbs from you, sent in the same box, im in no hurry, but wnt to be in on that batch you are ordering for…
/Lau
#18 — Fuzzy_Pause · 2021-02-06
I would like 1x pcb set as well! Thanks!!
#19 — claytron · 2021-02-07
Put me down for 1x kit!
#20 — bentoncbainbridge · 2021-02-07
Can I buy a built module? thanks!
#21 — reverselandfill · 2021-02-07
#22 — cinema.av · 2021-02-07
ill take a pcb/ panel set. shipped to the states.
#23 — emsahp · 2021-02-08
Hi ! Any demo somewhere ?
Cheers
#24 — rempesm · 2021-02-08
Search for Snow and you’ll see the other thread with screenshots. Don’t think @reverselandfill has taken any clips of it yet.
#25 — reverselandfill · 2021-02-08
I’ll try to capture something soon!
#26 — jsonpayload · 2021-02-08
Count me in for a pre-built module if that’s still an option!
#27 — allthesixes666 · 2021-02-09
ooh! Could you add me for a PCB set, please?
#28 — reverselandfill · 2021-02-09
the new pcbs have been ordered!
#29 — Marizu · 2021-02-10
I’d like a PCB and panel set, please.
#30 — hewed · 2021-02-10
Hi,
Putting my hand up for one PCB kit. The kit would be bundled into the same kit being sent to Rik_bS, I’ll cover the cost and Rik_bS and I will sort the rest out.
#31 — reverselandfill · 2021-02-10
by PCB kit, you mean the PCB set, right?
it gets a bit confusing. I have :
- PCB set
- full kit
- Module
#32 — hewed · 2021-02-10
Ah, excuse my newbie ignorance. I’ll take what Rik_bS is taking - just the PCB set.
Apologies for the confusion, but gratitude for your module innovation that I’m looking forward to racking. I have your CMIX module and I very much like it.
#33 — heythony · 2021-02-11
Please put me down for 1x full kit!!!
#34 — reverselandfill · 2021-02-11
ok the parts order is done. I will start with the first SNOW orders on Monday
I’ll contact the first 8 from the list!
#35 — reverselandfill · 2021-02-16
People are contacted, everything is ready to ship.
The new PCB batch is being made now. I’ll keep you all updated!
Yesterday I patched the SNOW into a Castle Flipflop. this gave cool “patterns in chaos” results!
and also blinky lines
#36 — Robbertunist · 2021-02-18
That sounds cool with the Castle Flip-Flops
Please post a video for us to see when it’s suits you
#37 — reverselandfill · 2021-02-18
In this demo I show the 5 different outputs:
1: offset1
2: offset2
3: filtered1
4: filtered2
5: comparator (with switch that selects source 1 or 2)
The offset outputs have 2 pot controls, offset and volume
The filtered outs react to the volume pot.
The comparator output has a level pot and reacts to all pot settings of the selected channel.
#38 — tronotape · 2021-02-19
I’d like to grab 1x PCB set whenever available.
#39 — Iscariot · 2021-02-24
I’d love to get a PCB set when available!
#40 — reverselandfill · 2021-02-24
the new pcbs just came in today. I’ll test the board and then contact everyone!
ps: the BOM will get some minor changes. (2x trimpots instead of 2 resistors) - I’ll post the value later!
#41 — reverselandfill · 2021-02-25
The new PCBs are ready and tested!
There will also be an update to the BOM. (the new batch of pcbs have 1k trimmers instead of a fixed gain resistor) , and there is a pot range adjustment (thanks to @VanTa ) . r34, r35, r37, r38 are now 20k
The range of the Comparator pot could be improved too. (this changed when the 20k resistors are placed)
I’ll test it as soon as possible.
I PMmed most people who already have the pcb
I’ll post the updated build files soon, and also a resistor placement helper!
#42 — reverselandfill · 2021-02-26
Comparator range tweak = r36 → 20k
#43 — reverselandfill · 2021-02-28
The BOMs and schematics on my site are updated.
note: the new pcbs have 2x 499r resistors instead of 1k trimpots,
for the gain of the noise transistor.
https://www.reverselandfill.org/diy/snow-analog-video-noise/Link: SNOW – Analog video noise – Reverselandfill
#44 — reverselandfill · 2021-03-01
I contacted everyone on the list!
#45 — devingreenwood · 2021-03-02
Sorry if this is a noob question or has been answered elsewhere, but does this module require NTSC or PAL sync or conversely is it HD/Chromagnon compatible?
#46 — reverselandfill · 2021-03-02
this module does not use sync and it works in the LZX enviroment
#47 — reverselandfill · 2021-03-05
can’t edit the first post anymore, so here is the remaining list : Order list for the SNOW module:LauLindqvist: 1x pcb set - shippedfuzzy_pauze: 1x PCB set - shippedbentoncbainbridge: 1x module - shipped
cinema_av: 1x PCB set - contacted jsonpayload: 1x module - shippedTronotape: 1x PCB set - shipped
meudiademorte - 1x kit - contacted Temp_hill : 1x kit - shippedTrashTeam: 1x Module - shipped
skvl: 1x kit - contacted IoDionysus: 1x module - shippeddevingreenwood: 1x module - shipped
#48 — dondon · 2021-03-05
Successful Snow build playing nicely with Memory Palace and friends!
#49 — TrashTeam · 2021-03-07
Late to the game. If there are built modules available I’d love to get one.
#50 — reverselandfill · 2021-03-07
there are. I’ll PM you
#51 — IoDionysus · 2021-03-07
Same here, I’d love to grab one too if there’s still some left
#52 — reverselandfill · 2021-03-07
It just got released, so I have a lot of them
I’ll contact you
#53 — skvl · 2021-03-08
I’d love a full kit please and thankyou! : D
#54 — reverselandfill · 2021-03-09
Hi All
I’ve added a resistor & small cap placement document on my site.
This will make it much more easy to populate the board
- as the resistor codes are pretty tiny.
https://www.reverselandfill.org/diy/snow-analog-video-noise/Link: SNOW – Analog video noise – Reverselandfill
#56 — Temp_hill · 2021-03-10
@reverselandfill Can i still order a full DIY kit directly from you? Thanks in advance
#57 — devingreenwood · 2021-03-14
Hello! I’d like to order a full module please.
#58 — reverselandfill · 2021-03-15
Hi Devin
Thanks for your interest in my SNOW project!
A built SNOW module is 175,- euro + shipping (depends on where you live)
What is your address?
Best, Martijn
#59 — reverselandfill · 2021-03-16
Here is a small guide to set the trimpots.
Trimpot settings: The 2 trimpots (pcb version 2.2) set the gain amount of the Noise. The trimpot closest to the power header is for Noise1, the one above that for Noise2. Turn the screw clockwise for higher gain. To get the best setting, patch Filtered Noise1 to the RGB encoder and turn the volume Pot of that channel all the way up. Now turn the screw Clockwise until you see a nice noise image with lots of detail. If you set it too high, the noise signals clips too much and you will see no variation in the voltages. Do the same for the other channel (which looks different, because of the filter values. more stripes instead of dots).
Troubleshooting: If you see too little noise output, it is possible that your noise transistors (T1, T2) have a larger negative offset. To fix this, change r34 (Noise1) and/or r37 (Noise2) to a lower value, such as 10k or 1k. Alternatively, you can swap out the transistors.
#60 — transistorcat · 2021-03-19
I’ve got the boards!
I spent an embarrassingly long time wondering why the label said “MONS”
Question:
The bom says “Switch ON-ON Micro toggle” - “micro” in context of switches usually refers to bumper-style automation/embeddable momentary switches.
Am i missing something or will a standard sub-mini on-on toggle switch work?
#61 — reverselandfill · 2021-03-19
I’ve updated the BOM, the word micro is indeed the wrong term.
You need a sub-miniature SPDT toggle switch that has two “ON” positions (on-on)
5mm shaft diameter . Thonk has them of the brand Dailywell, but any other will work too.
(I use TME’s TSSM1022A2, but those are out of stock now)
The switch sets the noise channel for the comparator. Noise1 or Noise2
#62 — Rik_bS · 2021-03-24
Has anyone made a Mouser cart for this?
Or at least collated the BOM in a spreadsheet?
I’m being a bit lazy, but hoping to skip a few steps of admin and get straight to the buying and building
Thanks in advance!
#63 — reverselandfill · 2021-03-26
I recently found out that the transistors for the noise generation can differ quite a lot (visually)
My first 10 builds were all good, but then one had more negative offset (as I posted above)
The visual result is less dense noise when the pots are set CW, or too low gain (see above post for the fix)
So if you want to be certain that it makes good noise, buy a few extra 2n3904 / 2n2222 transistors to test out.
You can also install female headers to swap out the transistors.
#64 — VisibleSignals · 2021-03-27
lol random transistor is random
#65 — allthesixes666 · 2021-03-28
thanks for the info update - I put mine together wrong (incorrect transistor), have since socketed both, but it’s still not working (the LM’s are fine, there’s power getting up to them, but turning the trimmers got me no where), so I’ll have a look at R34 and R37.
Hope i can get it fixed as I don’t usually have problems :-/
#66 — reverselandfill · 2021-03-28
PM me if you can’t get it to work.
but do you have a scope?
then you can check the output at the pin 1 of U1 and U2. you should see noise there.
the trimmers should be turned at almost CW (the kit has 24 turn trimpots, so keep up turning)
#67 — allthesixes666 · 2021-03-30
just sent a pm…
#68 — reverselandfill · 2021-04-27
The buildguide is finally done!
reverselandfill.orghttps://www.reverselandfill.org/wp-content/uploads/2021/04/SNOW-buildguide.pdfhttps://www.reverselandfill.org/wp-content/uploads/2021/04/SNOW-buildguide.pdf2.37 MB
Link: SNOW-buildguide.pdf
#69 — RoseColouredGlasses · 2021-05-14
Build guide looks awesome, thanks so much.
#70 — Rik_bS · 2021-05-19
Thanks for the build guide, very helpful
I guess it works
#71 — reverselandfill · 2022-12-23
SNOW standalone test
I just tested SNOW directly on a CRT monitor with a monojack to RCA converter plug.
It works good. the snow image looks more fuzzy (which is actually very pretty)
a few remarks:
-the offset potmeters only do something when you use the comparator output (I think the offset is cut from the signal at the CRT input?)
-the comparator output does not go fully white (snowstorm) so you might have to change some capacitor & resistor values
The comparator output has some difference . it can go from dots to lines at some settings.
at extreme settings the lines get a harsher look.
so those are new features!