nice!! i had troubles with an SCR staccato using a pentode, again i'm seeing people using this solution but with triodes, my conviction is that the grid 2 of a pentode messes with the SCR trough the tube's cathode and makes it go full 50Hz past some variac power... i used a relay on the primary of the MOT at the end, you have to sync it and it's a bit crude but it works
Thank you for the comment. I haven't worked with pentodes, but they are indeed different from triodes and, as far as I understand, unnecessary in a Tesla coil. Of course, there are good pentodes available and I also have a couple of GU81s, but I haven't done anything with them yet.
Hello, is there an error in the code/sketch right now? If not, you can send a link to the sketch here, otherwise it is not possible to copy it from the assembler
@@GURONTV Do you mean this, on line 25: while (analogRead(pinAC) < 15){}? That's a threshold value for the measured, half-wave rectified alternating current at which the thyristor is triggered. Input A1 on the Arduino.
@@ponttokamera Yes, the 25th line of the sketch has such a coefficient of "15", I just did not understand how it was formed, I thought it was a cubic root (sqrt) of 50 Hz, but it is not so, I assembled stockatto, but on LGT8F328P Chinese arduino logic green and for some reason in my opinion the circuit works a little bit wrong, too the discharges are going fast, I would like to go even slower, thank you
@@GURONTV How fast? The delaytime is sen on line 31: "if ((i >= map(analogRead(potInterval),0,1020,50,0)) && (analogRead(potInterval) > 10)){" Try to change the value "50" and see if it works. You can also try to increase the threshold value "15" to a bigger number. The AD-converter in your board can be slightly different than in Arduino and the value "15" might be too small.
heräs kyllä monta kysymystä. mihin tuolla käytetään noita kemikaaleja kuten ammoniakkia ja mitä muita nyt sielä huoneessa oli.. toinen ois ollu kiva nähdä vielä maanalaiset tilat.. veden ottamo.. sähkötilat
Ammoniakkia käytetään kattiilaveden pH:n säätöön, hydratsiinia hapen poistoon. Vedenkäsitetlyssä tarvitaan vielä rikkihappoa ja lipeää ioninvaihtimen elvytykseen. Automaatiotilasta tuossa oli pätkä. Sähkötila ei päältä päin kovin paljon siitä eroa. Vedenottamo jäi tosiaan välistä. Normaalistihan yhteistuotantolaitoksessa ei tarvita merivettä lainkaan, koska sekä laudutus- että hukkalämmöt käytetään kaukolämmöksi.
Ei näköjään. Aiempina vuosina olen kyllä nähnyt emon nappaavan ampiaisia nokkaansa ja vieneen ne ulos, mutta ehkä kimalainen koetaan vaarallisemmaksi. Tai sitten lintuyksilöissä on eroja, mene ja tiedä.
Just some bearings I found on Amazon with the search terms "V Groove Bearing. There are no STL files available, as I did not use a 3D printer to make any part.
Pönttö näyttäisi olevan aurinkoisessa paikassa. Auringonvalo kohdistuu suoraan pönttöön ja lankeaa vielä lentoaukosta sisään. Kesähelteellä pöntössä tulee liian kuuma. Varjoinen paikka metsikössä ja puussa on kyllä parempi ja oikeastaan lintujen kannalta oikea. Mutta video on kiinnostava. Tällaista on mukava seurata aina välillä.
Mikä on liian kuuma? Tällä paikalla on ollut pönttö liki 50 vuotta ja se on ollut ylivoimaisesti pihapiirin suosituin. Talitiainen pesii sujuvasti kyllä missä tahansa, ei ole niin tarkka paikasta, mutta esim. kuusitiainen ei mielellään pihapiirissä pesi. Sellainenkin on kerran pihassa ollut, pöntössä, mikä oli lähempänä metsää. Viime vuonna tässäkin pöntössä kävi kuusitiainen tutkimassa: ponttokamera.blogspot.com/2023/04/kuusitiainen.html
Thank you for your video and code. It works very well. There are a couple of mistakes on the schematic. The capacitor C1 should be 1000uf instead of 1uf, and you have the 7812 12 volt regulator shorted to ground on the Vin Nano pin. I addressed these before I built the circuit (I've been in electronics since 1974) and it worked first time around. I thought this may help someone else trying to build this project. Thanks again for all the info. Keep up the great works! Regards, Cliff
Oh no, what a mistake. I don't know what I was thinking when I drew the circuit diagram. Thank you a lot for noticing! Hopefully, no one has fried their regulator :) It was actually 1 mF, millifarads. For some reason, CircuitLab converted it to 1 mF, even though I wrote 1000 μF. I also corrected that with separate text in the diagram in the blog post. Should perhaps add a flag to the video, too. Good to hear that you got the circuit working. Apparently, the code worked fine as well? I was considering using an opto-isolator between the output and the triac when designing it. However, I tried without it, and it worked just fine. If you want it to be more safe, you can add the opto-isolator there.
The windows are made of opal acrylic. The woodpecker has never once pecked at them. It did try to rob the chicks last summer, but only through the opening. At that time, I made a simple barrier that I attached in front of the opening to keep the woodpecker away. It worked well, you can see it in this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-egfqfblI6Mo.htmlsi=OanLsGCqP2gvkZFy
So the woodpecker is able to stick its head into the nest, despite the small diameter of the hole? This has unlocked a new trauma for me. I think I will apply this countermeasure immediately. Thank you! @@ponttokamera
@@matteorivolta6932 Yes, a woodpecker can steal a chick. Here is a video from 14 years ago. The image quality is poor due to the technology of the time, but it shows how the woodpecker steals a chick from the nest. Older chicks jump high out of the nest when they hear a noise, thinking that it's the parents bringing food, not realizing that it's actually a woodpecker. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-exkt5LmVNhA.html Also, last summer the woodpecker tried many times. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Jk3fF81fXNc.htmlsi=oCdxQDjfGB-Oymr9 Once it almost succeeded in catching the parent. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-JkdtDyJ3RIs.htmlsi=DMqRd33ShnZgVFZ_
I'd wished that you'd posted some info: C in pf. for example (tank circuit) and whether you're using a MOT and voltage doubler. Nice VTTC arcs but most folks enjoy sharing aspects of their hobby. Also decided to swap 811A's for 572B's looks like a good tough tube considering they're not terribly expensive and will attempt 4 KV or so with doubler and high enough grid discharge resistance to keep the duty cycle 15-20 % but will have to experiment here. I'm going to try an air variable capacitor in mineral oil paralleled to my 2 -625 pf tank caps may be interesting. Keep rockin' that coil!
Hello, and thank you for your interest for my project! You're right, there was an error in the code, the blogger had messed it up. I fixed it a couple of days ago, it should be fine now. Have you tested it with the corrected code? The one that is linked directly from the Arduino cloud.
Looks great, well done. As I need multi-layer coils with optimal offset for density, I'm looking to build something similar that can do half width offsets at the ends in a rectangular bobbin.
I am surprised by the quality of your videos. Such great content. But your SEO score is very bad, which is not good. You should focus on this. I can help you if you are interested!
Those three remaining chicks all seem to be in pretty good shape. Why one was acting strangely, I don't know. Right now all three are sleeping side by side again. I think they will leave the nest tomorrow.
Minusta pönttöjen kokosuositukset ovat vähän ahtaanpuoleisia. Talitiaisen pöntön sisämitan suositus on 10-12 cm, tämä on 12,5 cm. Poikasia voi olla jopa 12 niin kyllä se 10 cm pönttö tosi ahtaaksi tulee kun poikaset ovat isoja.
