It's full of grilling time, and since I don't have a plot, and somehow not so much on the balcony, I have come up with my own little garden, so I sometimes decrease to the H0 scale 87 times.
I present an electrostatic grass planter for mock-ups.
If you prefer - a flocking machine for car upholstery.
The generator is NE555, frequency around 12kHz, duty cycle 60%.
The WN trafko keying transistor - BD135, and the trafko comes from an HP printer (I don't remember the model, I think M15) Primary 3R secondary 4k.
At 12V power supply, on the secondary side (without a duplicator) after full-wave rectification and smoothing with a capacitor, Sonel CMM10 showed 1.4kV.
Next, a traditional duplicator on elements also removed from the printer.
Cascade of 6kV / 5mA diodes and 3.3nF / 6kV capacitors
At the end, a 100M resistor. Until you feel this wind of electrons
Tile - Thermal Transfer.
In my time, grass was made of sawdust painted green with a poster ... (after "planting" of course). There was also a nice way to make cobblestones, bricks, etc. surfaces - you put a piece of tulle on an element with a texture (white or gray-brown depending on your needs) and painted it with a poster (you also have to choose the color depending on your requirements). on the surface with a brush so that the tulle does not wrinkle and sticks evenly to the substrate. After painting, one waited a while and ... the tulle was torn off, leaving the paint to dry. Better than any other patent, but it took practice. This is about modeling (and therefore indirectly planting grass) ... Coming back to the point: I hope that the tile, after being washed from flux remnants, is painted with insulating varnish on the print side? In a similar way (voltage multiplier) I used to make a power supply for a school laser. After some time without the varnish, there were beautiful short circuits / punctures on the laminate surface ... the voltage was "slightly" higher there, but ... it's better to be safe than sorry?
I suggest you read about the Flock technique. This weed is a textile shearing. It is applied by means of an electric field to a surface covered with an adhesive. The fibers are attracted and electrified, they elegantly protrude like real grass. (Photos are weak, because the length of my hair is 2.5mm)
The photo shows the prototype, in the device the board ends with the transformer, and the multiplier is separate, in a long spider, so that nothing touches the tips unnecessarily and is covered with varnish.
During the tests, there was also a 10-degree duplicator, but it was already shooting between the tips of the elements and the edge of the plate. Anyway, single kV is enough to obtain a suitable field for "planting" weed.
This is first about security, secondly: There is no need to overdo the voltage if we power the device from the AC adapter. Such a power supply also has a finite isolation between the primary and secondary sides, which is very easy to break when playing with LV. I prefer not to think about what might happen.
Yes, input 5 should go through the capacitor to ground. It does not really matter here, at most the parameters will float a little. In some 555s you do not need to connect the 4, because it is pulled up inside to the plus, and some will not move without the plus on the 4 tip, such a curiosity.
Once, while making a colleague's board, I forgot to connect 4 to vcc on the PCB, he noticed this error, but it turned out that the system worked without any problems. He was also not sensitive to touching the 4th finger or trying to stick his finger to the gnd. I suspect some production error (as it used to be in Atmega8), or there are indeed different versions.
I live in a block of flats, I wanted a TT, but look at the geometrical layouts of TT and H0 tracks. TT Tillig is a crazy dream.
Exit a parallel track from a turnout in the TT and H0 systems:
Fortunately, someone has long ago invented modular models. Today, the mock-up is not one big plate that has nowhere to put in an apartment. The mock-up I want to build for my son will consist of three modules. Two station heads and a central section (6 parallel tracks). For this, a trail will be attached to both ends. After disassembling the station into 3 parts, everything will fit under the bed.
For now, we are completing the materials, and to add a little flavor - this is how the track layout of one of the heads will look like.
And here is the whole 2.5m long station (if nothing changes):
And in TT there is not as much PKP rolling stock as in H0
And here is the best combination of modeling and electronics
There is not as much PKP rolling stock in TT as in H0
One of the reasons I switched to the TT was the lack of a HO selection. And the price ... all of this resulted in the choice of the TT. N'ka was just a misunderstanding ... It's just that then the only source of obtaining rolling stock and tracks (not to mention the buildings) was CSH ... Now it is much easier to make a choice taking into account your own preferences than to be "doomed" to what is ...
A few years ago, with the help of one colleague from Poland, Piko produced the ST43 locomotive, it spread like hot cakes, today there are several, if not several, models of PKP locomotives in Piko's offer. Unfortunately, you still have to drive in the TT under the DR or DB flag. There are one or two models from PKP 1: 120.
The second thing is the smaller the scale, the bigger compromises you have to make by building anything yourself.
Prices are similar (TT a bit more expensive), N is the cheapest, but switches and couplers look tragic, typical toy.
My friend Zdzich offers a variety of model making, which he produces himself: http://hulacki.com/sklepmodelarski/10-modele-kolejowe-h0 Take a look, maybe you will like something from the offer, and the purchase of time-consuming trinkets - results in faster completion of the mock-up.
The semaphore in the photo is probably even from Zdzich
Hello. Thank you, I know the products, hmm. Maybe yes: On the right a semaphore in H0, on the left Hulacki ...
You can choose from: Minikol - 3mm diodes stuck in a piece of metal plate Hulacki - 3mm LEDs stuck in a piece of plastic with a ladder Ostbahn - Signs for self-construction of a semaphore with SMD 0603 LEDs (about PLN 20, I buy these) Kluba - ready-made semaphores made of metal plates, the most realistic, but the price is> 100 PLN and the waiting time is several months.
The order is not accidental.
This is what the Ostbahn dwarf maneuvering disc looks like when folded. The price is PLN 8 and a half hour of fun.
There is no better alternative in terms of price and quality.
It's good that there is such a choice. A colleague designs these models himself, including molds for injection molding machines (I service the controllers, because some machines are quite old), so he chooses a compromise between the ideal and the technical capabilities of his machinery and / or the amount of work.
There is such a thing in life; A perfectionist will not buy anything, because in his opinion each product has a hundred errors and he will "do it himself" and the modeller will buy what he thinks is appropriate, profitable or for another reason known to him.
Electrostatically "putting" grass is a really good way to get realistic grass; I first read about it thirty years ago, when this method was used in a movie (I can't remember the title) to create landscape models. Now you can watch instructional videos on YT: https://youtu.be/8FWCD_MMD_M?t=427
Of course, each product has its own market and that's fine. There are many people among modelers who have no idea about electronics, for them assembling the semaphore by themselves is a piece of cake, but making it shine is black magic, and the kit comes with 0603 LEDs, no wires, nothing. I make LED plates and resistors for semaphores, e.g.
This grass is already "grown", so it is planted And because it is sifted through a sieve ... It's hard to define. "Elektrosadzarka" is the author's name. Someone invented it once and it has been functioning for a few years.
Because it is an electronic forum, not an agricultural forum :P
As if there was "planting grass", a purebred troll would write that grass was not planted. Such clinging for the sake of clinging, and there is nobody to do ... It's yourself I sow with an electric plant .
Coming back. - If the voltage is too high, the grass flies out of the filter in all directions. - WN polarization has no meaning. - The best effect (as in factory machines) is when the grass is between the electrodes. The tension is not on the strainer, but behind it.