- Видео 50
- Просмотров 22 973
Shave TheYaks
Добавлен 11 июн 2014
Some dude pretends to be an electrical/computer engineer and does a pretty bad job of it.
TTL Chip Tester Part 2 - Do-Work-December!
Went back and finished the chip tester! Now with 20 pins, thanks to the help of a commenter!
Previous video: ruclips.net/video/bI4-_grcvO0/видео.html
Chapters:
0:00 - Intro
0:11 - New Method of Scanning Switches
1:27 - Getting More Pins
3:32 - Fun Software Bug
4:33 - Is it a Bad Idea?
5:46 - Secret Surprise!
Previous video: ruclips.net/video/bI4-_grcvO0/видео.html
Chapters:
0:00 - Intro
0:11 - New Method of Scanning Switches
1:27 - Getting More Pins
3:32 - Fun Software Bug
4:33 - Is it a Bad Idea?
5:46 - Secret Surprise!
Просмотров: 109
Видео
RTFM - 74F109
Просмотров 6121 день назад
I finally understand what's going on with my 74F109, and now I can move on with my life. Previous video here: ruclips.net/video/SWkG_aeFEIg/видео.html Chapters: 0:00 - Intro 0:15 - Turns out this isn't the problem 0:58 - Hint hint... 1:41 - I felt like I was having a stroke 2:19 - Unravelling the mystery 6:26 - More evidence 6:47 - The lesson 6:58 - No one cares though 7:57 - I was personally a...
TTL Chip Tester - No-Effort-November!
Просмотров 11828 дней назад
For this year's No Effort November, I put in so little effort that I didn't even finish editing until December! I don't think I'm done with this project yet. It'll still test most chips fine, so I might as well build it anyway. (Edit: Next video is out here: ruclips.net/video/_sdO1bVinkU/видео.html) But more importantly, I can't get the strange CMOS-to-TTL clock behavior out of my head... I nee...
Digital Test Box Part 4 - TTL vs CMOS
Просмотров 542 месяца назад
I made some mistakes! (Edit: There was more to it than I thought! Update here: ruclips.net/video/4FrWoxqD9MI/видео.html) Looks like I wasn't the first though, here's another good video about TTL/CMOS compatibility: ruclips.net/video/1TpLYx1iZD4/видео.html Here's that TI document: www.ti.com/lit/sg/sdyu001ab/sdyu001ab.pdf Chapters: 0:00 - Intro 0:13 - Clock problems 1:02 - TTL and CMOS compatibi...
Digital Test Box Part 3 - Clock Multiplexing
Просмотров 188Год назад
Switching between clocks doesn't have to be difficult. But let's make it difficult anyway! Chapters: 0:00 - Intro 0:30 - The clock multiplexing problem 1:30 - Problem 1: Select signal can cause output clock edges 2:04 - Problem 2: Rising edge from one clock, falling edge from the other 2:34 - Classic clock multiplexer 3:03 - How it solves problem 1 3:27 - How it solves problem 2 4:48 - Why it i...
Digital Test Box Part 2 Part Deux - Some extra notes on buffering
Просмотров 378Год назад
Just some notes on a couple extra things that didn't make it in the last video. Chapters: 0:00 - Intro 0:09 - Oops, all backwards! 0:34 - Why didn't I do this sooner? 0:56 - Just make a PCB 1:05 - "Default off" 1:35 - CMOS pull-down 1:54 - Good idea? Meh. 2:19 - Up next...
Napier's Location Arithmetic (Part 2)
Просмотров 86Год назад
Using the tokens from part 1 to do multiplication now! @spikemilligan1's video on Location Arithmetic ruclips.net/video/3V3T0-kTBgM/видео.html The wikipedia page for location arithmetic (spoilers!) has more information on the written form of Napier's location arithmetic en.wikipedia.org/wiki/Location_arithmetic The wiki page has a link to a scan of Napier's "Rabdologiae" with translation and co...
Signal Generator 4 - The Tortoise and the Hare
Просмотров 17Год назад
It's getting weird, and it's going to get weirder. Code: github.com/shavetheyaks/siggen/tree/main/asm_1 Chapters: 00:00 - Intro 00:41 - Kernels 01:26 - The Tortoise and the Hare 01:55 - Separating State 02:53 - Especially SREG... 03:39 - Cycle Counting 04:03 - NOP Sledding! 04:26 - Time Alignment 04:42 - Conditional Timing 05:07 - Results 05:41 - Problem for Next Time Image credits for a couple...
Signal Generator 3 - Let's Do Some REAL Programming
Просмотров 82Год назад
In this video, I become one with the machine and rewrite the code in assembly to make it faster. This can do nothing but improve things, right? Code: github.com/shavetheyaks/siggen/tree/main/asm_0 Chapters: 00:00 - Intro 00:48 - Initialization 03:04 - Sampling and Output 03:22 - ADC and Scaling 05:09 - Switch Debouncing 06:21 - Results 07:26 - What Gives? 08:35 - Trying Something 09:20 - What G...
RTFM - ATmega328p
Просмотров 13Год назад
I hate how much time I spent trying to figure out what was going on in this datasheet, so I'm going to make you sit through it too.
Digital Test Box Part 2 - Fanout and Buffering LEDs
Просмотров 57Год назад
Let's talk about why buffering your LEDs probably doesn't matter, and then let's do it anyway. Next time, clock multiplexing (for real this time).
Napier's Location Arithmetic (Part 1)
Просмотров 127Год назад
Napier's location arithmetic handles both multiplication *and* addition, so let's start simple with the addition part. More to come in part two! @spikemilligan1 's video on Location Arithmetic (caution: spoilers!) ruclips.net/video/3V3T0-kTBgM/видео.html The wikipedia page for location arithmetic (spoilers!) has more information on the written form of Napier's location arithmetic en.wikipedia.o...
Homemade Sous Vide
Просмотров 26Год назад
If it's stupid but it works then it's not stupid. But it's still a bad idea for plenty of reasons. Technology Connections video on GFCI outlets: ruclips.net/video/ILBjnZq0n8s/видео.html Current ratings of various types of wire: www.engineeringtoolbox.com/wire-gauges-d_419.html Sous vide image credit: wikipedia user Pedro.serna (CC BY-SA 4.0) commons.wikimedia.org/wiki/File:Sous_Vide_Cooking.jpg
Signal Generator 2 - More Betterer
Просмотров 292 года назад
Using an R2R ladder DAC instead of the PWM "analog" output makes things much cleaner. Also have waveform selection and adjustable frequency now, but the highest frequency is only 200 Hz... Nothing a bit of assembly programming can't solve (next time)!
Napier's Promptuary
Просмотров 1502 года назад
Looks very different from the bones, but it's really just an extension of it! There are plenty of other sources on the promptuary out there, but I didn't actually get it until I saw @spikemilligan1's video on the promptuary: ruclips.net/video/pnTYzrl9NRs/видео.html Some other sources worth looking at as well: www.napiermaths.com/napier-s-promptuary.html www.17centurymaths.com/contents/napier/ji...
Digital Test Box Part 1 - Switch Debouncing
Просмотров 253 года назад
Digital Test Box Part 1 - Switch Debouncing
Analog Test Box Part 1 - Basic concept
Просмотров 466 лет назад
Analog Test Box Part 1 - Basic concept
ECG Mk. III Part 15 - Putting More Things Together
Просмотров 2168 лет назад
ECG Mk. III Part 15 - Putting More Things Together
Bench Supply Part IV - Stuffing it all in
Просмотров 428 лет назад
Bench Supply Part IV - Stuffing it all in
Bench Supply Part III - Building a case
Просмотров 458 лет назад
Bench Supply Part III - Building a case
ECG Mk. III Part 14 - Filtering Radio Frequency Noise
Просмотров 4608 лет назад
ECG Mk. III Part 14 - Filtering Radio Frequency Noise
ECG Mk. III Part 13 - Fun with Wire Insulation Microphony!
Просмотров 2389 лет назад
ECG Mk. III Part 13 - Fun with Wire Insulation Microphony!
Bench Supply Part II - Some interesting things
Просмотров 519 лет назад
Bench Supply Part II - Some interesting things
Hi, no special reason. I was in suggested videos and I see you're a new youtuber. I'd like to watch the full video so it helps the channel. Cheers.
Thanks, cheers!
Another way to handle multiple switches that some Arduino shields use is to have the switches select different resistors for a voltage divider and then read the voltage with an analog pin.
Oooh, that's good! I'm imagining something like an R-2R DAC with switches at the inputs? That should work with multiple switches being held down at the same time too. Thanks for the tip!
Common mode inputs might have phase shift due to parasitic capacitance. Its not only the magnitudes should be equal but also the phases for perfect rejection. imao
You're absolutely right, and I feel like a dummy for not thinking of phase at the time. Phase is probably even more important than amplitude in this case, as phase imballance gets worse with higher frequencies IIRC.
Use a band-rejection filter at 60Hz. Should work better
GOOD LECTURE BUT,STILL NEEDS MORE AND,CLEARER EXPLANATIONS ON SUCH A COMPLEX SUBJECT.PLEASE DO NOT SKIP ANY STEPS THE CALCULATIONS.
I WOULD USE AT LEAST 1% TOLERANCE PARTS FOR THIS TYPE OF CIRCUIT.
I WOULD SUGGEST USING A ANALOG METER TO SEE THE TRACKING DIFFERENCE BETTER.IT SHOWS REAL TIME DIFFERENCES BETTER INSTEAD OF USING A DIGITAL MULTIMETER WITH ALL THE DAMN FLEXUATION OF DIGITS.
You are crazy, thank you
MASS CONFUSION!
MASS CONFUSION!
Very very neat, but...NERD!
at 8:40 to achieve a gain of 0.5 shouldn't have those resistors, 10k and 4.7k, be backwards?
Yep! You're right. Good catch, thanks.
Super I was confusing in emg signal part Thank u very much
go on
You sure some meth won't help? I always meth with my math!
Hey R S, i appreciate your work. I have a question. How come, when we use approximation V+=V-, we dont get Vout=0 because thats what the graph says? Does Vout changes to make the difference between two inputs zero?
Such a simple and great video! Thank you very much, I have been lookinh at this for a day! Very greatful
it's a bit hard to read your writing, it should be bigger or clearer.
I have to correct myself. it is only hard to decipher if you don't zoom in with the camera (the first part of the video).
You're totally right. I'll pay more attention to that in future videos.
good one appreciate it
Looking forward to the next one.
I've just spent an entire afternoon watching this whole series, looking forward to the next one! I was thinking that cable effect might be inter-conductor induction.
+Ian Darley Good to hear! I'm working on another one now, should just be a couple days. What do you mean by inter-conductor induction? How would that convert the vibration to a voltage? Maybe there's a current flowing and the vibration would modulate the inductive coupling between the wires?
+Ryan Schuster Yes, that's exactly what I meant.
+Ian Darley It's a good theory. I'll find some way to test it. I'll have to think about separating the wires to decouple them or somehow doing it without the insulation...
Could be induction noise
Thank you so much for these videos! Really helped me understand how the DC offset works.
Gabriel Nylander Good to hear. It helped me understand it too...
ongratulation very interesting!!!!! I'm waiting part 5
marcello belfiore Glad you liked it. I've got a few more if you're still watching.