GIGATRON 9'000 (OK, it's not really called that, but it sounds cool). https://gigatron.io/?p=2230

This is apparently one of the Chinese manufacturers of custom, made-to-order PCBs. I don't know much about that stuff yet, but I found this so I thought I'd link them here. If the EE guys want maybe they can tell us what they think of them. https://www.pcbway.com/ I like the idea of building custom, inexpensive electronics & controllers etc. specifically engineered for our robowaifus someday. But my guess is we'll need to stick with commonly manufactured parts during these days of the robowaifu industry. Anyway, just storing this here so I can find it again someday.

Related: Buying or building your own electronic speed controller for a BLDC motor >>10729 - Building it might be a good early project for someone getting into electronics. After doing some smaller test projects of course.

>>1554 So, since the last time I checked out the 6502 project from Ben Eater, he's added a couple more videos (nos. 11 & 12) about the basics of interrupt requests, and devising interrupt request service routines. The latter is accomplished in the second video via the 6522 interface chip. Certainly some professional-tier Digital EE material, and touches on a few topics that we'd run into creating the embedded electronics for robowaifus. You need to understand the assembler involved, as well as digital electronics edge states etc., which are covered in other videos from his channel. youtube-dl -i --write-description --write-auto-sub --sub-lang="en" https://www.youtube.com/watch?v=DlEa8kd7n3Q https://www.youtube.com/watch?v=oOYA-jsWTmc >the full playlist: https://www.youtube.com/playlist?list=PLowKtXNTBypFbtuVMUVXNR0z1mu7dp7eH

>>5802 Assembly manual > Assembly videos: youtube-dl -i --write-description --write-auto-sub --sub-lang="en" https://gigatron.io/?page_id=544 https://github.com/kervinck/gigatron-rom

>>10740 >>10741 Wow, it might be educational to go so deep into things, understanding the fundamentals, however that's also a kind of rabbit hole. Do what you want, but I suggest starting with sensors and dc motors. That's what I'm doing. OT: The Gigatron would be great if we get an ecosystem out of it, where small groups would be able to make their own ICs and build simple computers which could connect to the net. In case some major gobal catastrophe would happen and we would need to recover. I know that some people are working on their own analog computers, that might be useful for that as well. Essential tools and electronic components to get started: https://youtu.be/u4md32GMX28 https://youtu.be/7-djg27lJyQ https://youtu.be/Nb78wF1Tkwc

>>10743 >In case some major gobal catastrophe would happen and we would need to recover. Yes, that's true. All modern microprocessors would fry permanently in a big EMP or other severe partical storm, but clunky old TTL & 6502s, etc., should keep on ticking after a reset. Heh, apart from the billions that would die first it'd be just like being transported back in time to the '70's or something.

>>10745 This was one example I was thinking about, but I'm inclined to assume they would survive if stored in a metal box or something. Also, not sure how strong the EMP would need to be and how realistic it actually is. Would have to look more into that. Also, if they last longer, compared to microprocessors, in a case if we would loose Taiwan, China and California, or even more to some nuclear war and then had no factories to build new computers left.

>>10746 Considering constructing relay computers might not be a bad idea at some point in the future. >Relay Computer from the Clickety Clack channel: https://www.youtube.com/playlist?list=PL_1HsIiuOfg3QA91DUd9kGJjQoOHwlt5Q

>>10747 >relay computers Cracking good job of Wallace & Gromit make a pocket calculator. https://www.youtube.com/user/paul80nd/playlists

>>10747 IDK, what's the benefit over ICs? That we could build them? I guess, such computers would be even much slower.

>>10757 >what benefit Learning at a very fundamental, 'mechanical' level exactly what makes electronic computers tick. Charles Babbage might have given his back teeth to have what we can obtain freely to hand so that even an amateur can create a real working computer from scratch. >over ICs? A relay computer will actually keep working after a major EMP. >such computers would be even much slower. Much doesn't even begin to cover it Anon. But OTOH, it's infinity faster than no modern computers at all, which is what the survivors remaining will have after modern ones are destroyed in the above scenario. Heh, you could think of it as a 'rebuilding civilization from the neo-Stone Age' type of deal. :^) Ofc, mostly it's just a fun hobby and educational thing. Not every.single.thing. has to have a bottom line attached to it, right Anon?

>>10679 eFuse circuit: Protection for electronics and batteries https://youtu.be/JOhQ3nsR7xo

>>10840 Neat, thanks Anon.

How To Make A Conductive Ink https://tube.piweb.be/videos/watch/dca5f7b6-5892-472e-8f9b-3b9de26a2edb

Companion video series (playlist) for the book But How Do It Know? (>>4660) https://www.youtube.com/watch?list=PLYE0XunAbwfDvfabOlNWLViRcMI54M6CR This is a fan-made series of videos, not from the author himself. However, it's directly linked from the book's main page now, so it clearly has his approval. http://buthowdoitknow.com/

>>11211 Some additional resources by this fan. https://hackaday.io/project/176526-but-how-do-it-know-8-bit-cpu-build https://github.com/patrickleboutillier/jcscpu-hmc Interestingly, he also attempted an implementation directly on an FPGA setup. https://www.youtube.com/playlist?list=PLYE0XunAbwfBt2wXgDHEYPtILpimne_R9

>>11211 >>11226 Thanks, I might look into it.

I dunno, Plumes of Dusk are often hard to come by. (because they aren't real)

>>12158 Oh they're real, Anon. Very. VERY. REAL.

>>12158 >>12171 What?!?

>>11211 >Companion video series (playlist) for the book >But How Do It Know? (>>4660) https://www.youtube.com/watch?list=PLYE0XunAbwfDvfabOlNWLViRcMI54M6CR Made this for my own benefit. Figured it might be slightly useful to any anons who yt'dl this playlist too. >playall.m3u But How Do It Know Video #1 - Introduction-HeYAtkbHvuQ.mkv But How Do It Know Video #2 - The NAND Gate-7X8Xe6NdX_U.mkv But How Do It Know Video #3 - The NOT and AND Gates-RsS5E09KOFQ.webm But How Do It Know Video #4 - 1-bit Memory-T_zmJFBdT1Y.mkv But How Do It Know Video #5 - The Enabler-9zE6cxrcAHM.mkv But How Do It Know Video #6 - The Register-BmQ0sgMLU94.webm But How Do It Know Video #7 - The Project-6VVbffrB1hk.webm But How Do It Know Video #8 - The Bus (part 1)-n5KcZeeivpw.mkv But How Do It Know Video #9 - The Bus (part 2)-RYMHEctNua8.mkv But How Do It Know Video #10 - Programming the Arduinos-89H9G1QBP88.webm But How Do It Know Video #11 - The RAM-RMTTzt1TpQM.webm But How Do It Know Video #12 - The OR and XOR Gates-hZ46ScsJR0E.mkv But How Do It Know Video #13 - The ALU (part 1)-u_suc2Suz_A.mkv But How Do it Know Video #14 - The ALU (part 2)-1b9xstTJgdw.mkv But How Do It Know Video #15 - The R0 and R1 Registers-EU_dSRYpKAk.webm But How Do It Know Video #16 - The Clock and Stepper (part 1)-JzrhdoKcWP4.mkv But How Do It Know Video #17 - The Clock and Stepper (part 2)-GNm02NtcrUI.webm But How Do It Know Video #18 - The Clock and Stepper (part 3)-h0BzI1fzYx4.webm But How Do It Know Video #19 - Doing Something Useful-xlsrpmMnYJg.webm But How Do It Know Video #20 - The R2 and R3 Registers-3cpDMArIQBs.mkv But How Do It Know Video #21 - Instruction Processing-0munf5abV6o.webm But How Do It Know Video #22 - ALU, LD, ST and DATA Instructions-yCNYYJ5sxLw.mkv But How Do It Know Video #23 - Microcode-Z-UGXOA-YzE.webm But How Do It Know Video #24 - Shift Registers-76NV0D64ujc.mkv But How Do It Know Video #25 - The Control Section-hr-mDJS__Lg.mkv But How Do It Know Video #26 - Manual Progamming-Jelqtmf92Nc.mkv But How Do It Know Video #27 - The JMPR and JMP Instructions-5nVfUwjL4T0.webm But How Do It Know Video #28 - The FLAGS Register and JCAEZ Circuitry-vwnRNcgfYNc.mkv But How Do It Know Video #29 - The IO Instructions and Devices-ELyPN6f-HLM.mkv But How Do It Know Video #30 - Assembly Language and Automatic Clock-VEP-cN9Z8i0.mkv But How Do It Know Video #31 - Running Sample Programs-ldliqjpa3L0.mkv But How Do It Know Video #32 - Conclusion-PlRL-e-tk9Q.webm

>>14342 Links and info from the video descriptions, roughly in the same order as received: === Companion Video Series Playlist: https://www.youtube.com/playlist?list=PLYE0XunAbwfDvfabOlNWLViRcMI54M6CR But How Do It Know?: http://www.buthowdoitknow.com/ SN74HC00 product page: https://www.ti.com/product/SN74HC00 Circuit schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/4-%201-bit%20Memory/1-bit%20Memory.png Full Register Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/6-%20The%20Register/Register_bb.png Full Register Schematic with Testbench: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/6-%20The%20Register/Register_bb_testbench.png SN74HC373 Product Page: https://www.ti.com/product/SN74HC373 Perl Implementation: https://github.com/patrickleboutillier/jcscpu/tree/master/perl Go Implementation: https://github.com/patrickleboutillier/jcscpu FPGA Implementation: https://github.com/patrickleboutillier/jcscpu-hw Bill Of Materials: https://patrickleboutillier.github.io/jcscpu-hmc/jcscpu-hmc_bom.html Project Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/jcscpu-hmc_bb.png Bus Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/9-%20The%20Bus%20(part%202)/jcscpu-hmc_bb_bus.png Ben Eater 8-bit Computer Video Series: https://www.youtube.com/playlist?list=PLowKtXNTBypGqImE405J2565dvjafglHU Ben Eater Tri-State Logic Video: https://www.youtube.com/watch?v=faAjse109Q8&list=PLowKtXNTBypGqImE405J2565dvjafglHU&index=10 Installation Instructions: https://github.com/patrickleboutillier/jcscpu-hmc#installation-instructions RAM Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/11-%20The%20RAM/jcscpu-hmc_bb_ram.png RAM Arduino Code: https://github.com/patrickleboutillier/jcscpu-hmc/blob/main/Arduino-Main/RAM.cpp SN74HC04 Product Page: https://www.ti.com/product/SN74HC04 SN74HC08 Product Page: https://www.ti.com/product/SN74HC08 SN74HC32 Product Page: https://www.ti.com/product/SN74HC32 SN74HC86 Product Page: https://www.ti.com/product/SN74HC86 Diode Logic Gates Video: https://www.youtube.com/watch?v=9lqwSaIDm2g CD74H283 Product Page: https://www.ti.com/product/CD74HC283 SN74H682 Product Page: https://www.ti.com/product/SN74HC682 ALU Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/14-%20The%20ALU%20(part%202)/jcscpu-hmc_alu_bb.png ALU Arduino Code: https://github.com/patrickleboutillier/jcscpu-hmc/blob/main/Arduino-Main/ALU.cpp Control Section Labels: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/labels.pdf ALU Test Cases: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/14-%20The%20ALU%20(part%202)/Table.png R0 & R1 Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/15-%20The%20R0%20and%20R1%20Registers/jcscpu-hmc_r0r1_bb.png Clock and Stepper Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/18-%20The%20Clock%20and%20Stepper%20(part%203)/jcscpu-hmc_clock_bb.png Control Section Labels: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/labels.pdf R2 & R3 Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/20-%20The%20R2%20and%20R3%20Registers/jcscpu-hmc_r2r3_bb.png SN74HC595 Product Page: https://www.ti.com/product/SN74HC595 Last Minute Engineers SN74HC595 Tutorial: https://lastminuteengineers.com/74hc595-shift-register-arduino-tutorial/ Control Section Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/25-%20The%20Control%20Section/jcscpu-hmc_cs_bb.png Here's the program we will be using: RAM Addr Code Instruction 00000000 00100000 DATA(R0, 20) 00000001 00010100 - 00000010 00100001 DATA(R1, 22) 00000011 00010110 - 00000100 10000001 ADD(R0, R1) FLAGS and JCAEZ Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/28-%20The%20FLAGS%20Register%20and%20JCAEZ%20Circuitry/jcscpu-hmc_flags_bb.png FLAGS and JCAEZ Lines Schematic: https://raw.githubusercontent.com/patrickleboutillier/jcscpu-hmc/main/Videos/28-%20The%20FLAGS%20Register%20and%20JCAEZ%20Circuitry/jcscpu-hmc_flag_lines_bb.png But How Do It Know Errata: http://www.buthowdoitknow.com/errata.html 5x5 program: http://www.buthowdoitknow.com/cpu_model_intro.html EDSAC Squares program: https://www.cl.cam.ac.uk/~mr10/Edsac/edsacposter.pdf 10print program: https://10print.org/ Ben Eater's 8-bit Computer Video Series: https://www.youtube.com/playlist?list=PLowKtXNTBypGqImE405J2565dvjafglHU Ben Eater Clock Videos: https://www.youtube.com/watch?v=kRlSFm519Bo https://www.youtube.com/watch?v=81BgFhm2vz8 https://www.youtube.com/watch?v=WCwJNnx36Rk https://www.youtube.com/watch?v=SmQ5K7UQPMM Ben Eater EEPROM Videos: https://www.youtube.com/watch?v=BA12Z7gQ4P0 https://www.youtube.com/watch?v=K88pgWhEb1M RAM chip: https://www.alliancememory.com/wp-content/uploads/pdf/Alliance%20Memory_64K_AS6C6264v2.0July2017.pdf EEPROM chip: https://ww1.microchip.com/downloads/en/DeviceDoc/doc0270.pdf

> Researchers at TU Wien have Developed Adaptive Transistor Using Germanium https://www.techpowerup.com/290217/researchers-at-tu-wien-have-developed-adaptive-transistor-using-germanium > 0 > 0.5 > 1 Adaptive transistor which can have some "average" states, a.k.a nonbinary system, or something similar to the ternary system of computation, which is still considered very complex today. > does not require new technology, ready to be implemented in existing architectures > according to the claims in the article, it is ideal for AI systems or acceleration of neural networks

Thanks very much for the news Anon! While an important breakthrough in this domain, it probably doesn't bear an entire thread here on /robowaifu/ . I'll be merging it soon with one of our other, more general threads. Please continue posting this sort of information for us here however. Cheers.

>>14824 OK, I think this is a reasonably good thread (unless you have a better one in mind?) Thanks again, Anon.

>>14824 Interesting. What does this imply? Is there a significant improvement in the performance of the chips using this style of transistor? If so, then we'll have to make our own asic using that same method

>>734 For any Anons currently working on electronics boards that would benefit from Bus Pirate, there is also a v4 that has more RAM available. > http://dangerousprototypes.com/docs/Bus_Pirate_v4_vs_v3_comparison The firmware code is also available. https://github.com/BusPirate/Bus_Pirate

I'm looking to get into electronics. Are the ELEGOO UNO starter kits any good? There's one on Amazon for $40. I basically just want to learn how to program a microcontroller, control servos with a controller and understand enough so I can start building a robowaifu. Or should I save my money and just play with the circuit simulator in TinkerCAD?

>>16224 I actually have the kit on the left, and I definitely recommend them for learning Anon, sure.

I don't recall exactly where we were all talking about creating DIY garage-fabs, so I'll put this here for now. >Using mercury lamps as a UV light source ASML is able to get 220nm features out of a dry process. https://www.asml.com/en/products/duv-lithography-systems/twinscan-xt-400l Surely not cheap, but conceivable for a small robowaifu factory.

This here might be interesting for people who want to make sure they can go into prepper mode if they can't get their PCBs online anymore: https://jimlaurwilliams.org/projects/seychellePaper/index.html >Of the several types of etchant chemistries the hobbyist can choose, acid cupric chloride (also called acid copper(II) chloride or just cupric chloride) is one of the more interesting types, since it has the ability to be regenerated, or replenished, without having to throw away the solution.

>>16224 The answer to whether you should buy it is always yes

Do you even thermionic diode vacuum tube your robowaifus, bro? :D https://www.youtube.com/watch?v=FU_YFpfDqqA >=== -funpost edit

I recently saw this video https://youtu.be/kqqkpfd7OCc which is about an odd boost converter. He mentions using it to step-down atmospheric electricity to a usable voltage (something I mentioned long ago in another thread) but he doesn't ever actually display a version of it that can do that. The circuit he shows has a voltage input and an output, but for atmospheric electricity you need a wire that's grounded and one that goes very high into the air to maximize the voltage difference, then convert that to a usable lower voltage output. Is there a simpler way of changing it that has a high voltage input, low output and a ground, or would I be better off with a different circuit entirely?

>>41911 Slight correction; it can do what I asked about, but it hadn't quite occurred to me to place a spark gap in the circuit to avoid the whole thing getting fried if it got hit by lightning. My only other problem is that he spends way too long explaining what a fractal is, but never mentions anything for calculating the input and output power.

>>41911 One fun approach to this idea is to use a high quality wire fence as the antenna. It doesn't need to go high into the air to get a measurable voltage to ground, b/c it's span is so long (and the longer, the better). Stay safe with this stuff, Anon! Cheers. :^)

>>41915 A wire fence wouldn't really work as anything other than an extension of the ground. And the closer it is to something else that's tall, the worse it works. Increasing the surface area does increase the amperage, so a fence made of an insulating material that's lined on top with a conductor would have lower voltage and greater amperage than something tall with a small conductor on top, but it wouldn't really work well if the fence was too close to your house or something. Although I'd still prefer to make the solid-state version instead of an electrostatic motor, even if the latter would be easier for me to regulate the output. And a key difference is this "fractal capacitor" setup is that it can be used in reverse to make a voltage multiplier, which is something I also need for an experiment. It's pretty annoying to me how many things I want to make that need DC, but AI always suggests something that converts the DC to AC then back to DC in another part of the circuit when I really just want DC-DC.

>>41917 >A wire fence wouldn't really work as anything other than an extension of the ground. And the closer it is to something else that's tall, the worse it works. I suppose I understand your point, Anon. But I also assure you that you can read current to ground on a big wire fence (say one surrounding an airport ramp). In a lightning-prone area (Orlando FL, say) the current can actually be fairly high depending on conditions. But yeah, having some kind of mast or other structure would be a big benefit. --- Maybe I lost the plot here, but I've forgotten why this applies to robowaifu development? Is it the motor driver tech or something?

>>41919 Besides the fact that atmospheric electricity generates power 24/7 regardless of wind and light, without needing any fuel (but if you call it free energy people bitch and moan and kick and scream) I was hoping to use that circuit to conduct an experiment which may also be useful for waifus.

>>41923 Oh. Understood. Good luck with your experiments, Anon! Please keep us here all up to date. > (but if you call it free energy people bitch and moan and kick and scream) Lel'd. Cheers. :^)

Here's another question I don't know how to ask without an accompanying crude doodle. If a permanent magnet were inside a toroidal core that was used as an inductor, what effect would the magnet have on the magnetic flux?

>>42182 FWIW. https://www.electronics-tutorials.ws/electromagnetism/electromagnetic-induction.html https://en.wikipedia.org/wiki/Toroidal_inductors_and_transformers https://en.wikipedia.org/wiki/Toroidal_inductors_and_transformers https://eng.libretexts.org/Bookshelves/Electrical_Engineering/Electro-Optics/Book:_Electromagnetics_I_(Ellingson)/07:_Magnetostatics/7.07:_Magnetic_Field_of_a_Toroidal_Coil And finally, a calculator. https://coil32.net/ferrite-toroid-core.html

>>42182 Current will be resisted one way and not the other due to magnetic fields "pushing" each other. AC current will be resisted due to inductive reactance. Look into chokes and similar for more information. https://en.wikipedia.org/wiki/Choke_(electronics)

>>42184 >>42183 I forgot to mention a part because I was having internet connection issues. I meant to ask what would happen with that core in a voltage-boosting circuit like a joule thief. All the AI answers I've gotten just say that it just makes the circuit less efficient.

>>42188 >Magnet in joule thief inductor This would make it far less efficient. You're storing electricity in a magnetic field, then using its collapse to send a high voltage pulse to the LED. A magnet in the inductor will create a reactance resisting the flow of current in either the buildup or collapse phase, depending on orientation. This will result in the inductor and magnet getting heated in proportion to the energy losses fighting the magnetic field. To provide an analogy, imagine the current flow is water. In this example, the water is building pressure to open a door that has a spring behind it to ensure enough water pressure is built up. Your magnet would be adding a paddle attached to a source of friction that varies in resistivity depending on direction of current flow. It just makes the system worse. Please don't do this, it's a waste of power and a magnet. I'm curious how you came to this idea?

>>42201 There was a patent for a free energy device called the "motionless electromagnetic generator" or MEG that is basically a transformer with a magnet in it, and some people have demonstrated an increase in amperage output from it even without tuning the input frequency for the most efficient output: https://www.youtube.com/watch?v=xvNyDp_XYYw But having seen the patent & being familiar with how patents often lie by omission to keep people from successfully replicating the invention, the first thing that came to mind was that if the input coil was an air core pulsed with DC to negate the permanent magnet, then the flux would leave the output coil, creating a pulse of current, then when the DC input failed the flux would return to it on its own, creating another pulse in reverse. The original patent just says AC, and the flux from the permanent magnet & the input coil both go to the output, which only seems necessary because the flux wouldn't return on its own. I was thinking about making a self-oscillating circuit like that Joule Thief and had the idea to combine it with my modified MEG concept, but trying to think of how to do it with a single ferrite core. My first thought was to make the building-up part reinforce the permanent magnet's field and when it collapses make the output of the Joule Thief power the coil that switches the flux of the permanent magnet. I wasn't sure what effect this would have on the efficiency, so I figured I'd ask here. I wasn't sure if reinforcing the permanent magnet with an electromagnet would be useful in any way, so I thought of just removing the permanent magnet entirely.