Projects and experiments in physics, electronics, mechatronics/machines, software, instruments and tools, crafts, woodworking and metalworking. I mainly show things that I make (or have made) and tips from my experience. So this channel is kind of a video blog. I have a long experience in designing electronic devices, machines, and in particular software and firmware development for embedded systems. Also see my site/blog AccidentalScience.com where I put articles, often related to the video published in this channel.
This channel started with documentaries, that I almost no longer make, and are collected in a specific playlist. While I'll try to upload videos approximately once every 15 days or less, actually this will happens as the videos will become available, so I recommend you to subscribe and click the bell icon to get notified when new videos are available. I am not a native English speaker, however my videos are in English for people from all over the Europe, and beyond.
Slightly unrelated question but I figure this is the best way to get your attention. You made a series 'flat from scratch'. I have another question, do you know how to make a perfect sphere from scratch? Another question if one has a sphere already, how can one tie a rope exactly around the diameter?
Great video! I use citric acid because it's cheap, and it works pretty well over night or within 24 hours. But I wonder what's the responsible (eco-conscious/safe/legal) way to dispose of the liquid after? Any suggestions?
@@lankplank well I'm not a chemist but AFAIK citric acid reacts with both iron(ii) and iron(iii) ions forming the respective citrates. They are in turn created when oxidized iron/steel is submerged in a solution of water and citric acid. Iron citrate is not toxic, so I think that in small quantities it can be safely discarded on the ground as it is a nutrient for plants. However this is just a thought, I lack the expertise to give you a definitive answer.
@@RoronoaZoro-yl2wi you use a flat surface (that may be achieved by the mean of the three plates method) to make flat surfaces of other tools, pieces, parts etc.
@@MrTega1975 as far as I can remember originally the three plates were abraded one against the other, but in his paper Mr Whitworth proposed a faster and more accurate method by bluing and scraping the surfaces, as described in the video. AFAIK the two methods usually are not mixed. Additionally, because I had to make flat surfaces that have a very high width to length ratio (approximating a straight edge) I experimented with reasonable success a variation of the method that consists of slightly shifting the surfaces along the longest side (the length). P.s. sorry for replying in English but I'm on my phone now and writing in Italian here with autocorrect is kinda PITA.
Man use hydrochloric acid, nude copper wire, put in the solution, later the piece you want to plated clean before using fire and vinegar to remove any oxide, after that polish with baking soda and little water as a paste, later put the piece of metal into the solution of hydrochloric acid with copper, then use any painting brush (one inch or depends) and start to brush the piece in all directions as painting, you can lift the piece over the solution or into the solution, better if you waited for see the hydrochloric acid solution is a little bit blue color very light, this is the point to start. The quality of this method is great, cheaper and you don't need electric power... Muriatic acid is the same hydrochloric acid. Just make it sure use all the warnings, glove, safety glasses, appropriate clothing, and ventilated area, never with the wind in direction of your face...and take close to your hands banking soda to neutralize in the end, or store the solution in safety bottles far away from children, and etiquette and tags well and clear for safety. Later you can use the solution again with the wire copper inside.
Voltafe regulators are great lets remember all voltage regulators have an error amplifier. Therefore you end up with a amplifier modulating tje load amplifier. So. Not perfect. For hi quality audio ypu must be careful with voltage regulators to keep them from modulating your amplification device
@@endremurti as you can read from the related article on my website I haven't done a proper bandwidth test but using a known frequency and amplitude of 1 meg I've been able to see no attenuation.
@@endremurti actually is not that much if you plan to use it on an SMPS. You'd be better off adding the capacitive compensation provided you purchase the right capacitors (you need almost 1000v to be safe) made in EU or in US.
Hi... ¿How can I find information about that oscillator and pulse generator? Now I know I can simulate it in a computer program or built mine in house but in both cases if I want to model it mathematically I would have to measure... In resume: could somebody tell me where can I see theory about oscillator and pulse generator?
While I don't have a specific answer right now, a good starting point is to understand the theory of operation. Some more information is available on the relative page on my website, but there is literature (I think it should be available online) that covers oscillators and other signal manipulation through logic gates. I have an old book titled "Elettronica Digitale" (don't remember the publisher though and AFAIK it's only in Italian) that provides good coverage on the topic. Maybe searching for a similar title you may find something.
@@AccidentalScience Yeah... Thnx for your answer... Another question I have is: Did you review your book for design that circuit? I can understand how the oscillator part works by seeing connections in NAND, resistors and capacitor because it is the first part but I can understand pulse generator and the other parts by simple inspection 😓
I really like it when someone can speak really good english, but get a few little words wrong like cirquit 😁👍 . . Nice video though... ive been wanting to try electroplating for ages but cant afford the chemicals
I initially thought about making a sensor like this, but as a level transmitter for my arduino. I planned on using a 555 in a monostable configuration in order to read its actual capacitance value. Then after would have to calibrate it in order to correlate its level to its reading. [Edit] I shared your video to GreatScott. He had a project recently to monitor a water tank level and used an ultrasound sensor in the end. But I wanted him to be aware of your creation :)
@@AccidentalScience ok. Loved the entire build process. Thinking if building a metal lathe myself. Would you say it was cheaper than just buying a metal lathe?
@@Demon_Mx2277 no it's not. But it could be more precise (that depends on your skills and equipment) and could better fit your needs . Certainly you get the chance to learn a lot in the process.
Sorry at the moment it's not available. Maybe I'll do something sooner or later. Mi dispiace al momento non disponibile. Forse fraro' qualche cosa presto o tardi.
In the first version it may be intersting to change the BC337 for an opamp led drive. The leds goes in the feedback loop of one non inverting opamp. With this configuration the leds turns on gradually from zero.
16:40 - I think you came up with quite an elegant solution for the problem. It would greatly reduce the possible errors in the flat surface and the results would be more than suitable for a lathe or similar project.
