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Oaf Electronics
เข้าร่วมเมื่อ 4 ส.ค. 2011
Mostly hobby electronics, computers, and generally mucking about with technology for fun.
Oaf Experiments with 4067 and 4060.
Yes, that is as exciting as it sounds! The 4067 is a 16-1 analogue multiplexer, and the 4060 is a clock divider. Using both together (and a clock signal) a circuit can be built to sequence a bunch of LEDs. Bodging as we go.
มุมมอง: 446
วีดีโอ
Oaf practices SMD soldering, and builds an Sillyscope!
มุมมอง 36814 วันที่ผ่านมา
A very, very cheap oscilloscope (about £5). www.aliexpress.com/item/1005006409441086.html?spm=a2g0o.order_list.order_list_main.169.21ef1802A9ivJC Which comes disassembled. To be fair, it is listed as 'soldering practice', which doesn't give one much hope about it's likely functionality upon assembly. Will it work? I'm also an author of sorts, check out my author page on Goodreads. Sci-fi and po...
Oaf Plays with Coils, Comparitors, and Clocks.
มุมมอง 142หลายเดือนก่อน
Using a ferrite core, come enammel wire, a LM 393 and a crystal oscillator. I am also a writer of sorts too. You can see my Goodreads Author page here: www.goodreads.com/author/show/49736919.Stanley_Percival_Simmonds
Fan Fun. Oaf plays with PWM and adds some additional fans to his server
มุมมอง 216หลายเดือนก่อน
Wanting to add more storage to the server I added more hard disks, only to discover that more hard-disks means more heat than the existing cooling could cope with (especially in the summer!). So I investigated a way to add more fans, and keep some control over the speed/noise. PWM specification can be found here : www.intel.com/content/dam/support/us/en/documents/intel-nuc/intel-4wire-pwm-fans-...
Another modded keyboard.
มุมมอง 385 หลายเดือนก่อน
After my last escapade in modding a keyboard, I still had a spare Teknet Keyboard left, so I finally thought that I would have a go at modding that one as well. I was also trying a different document camera for most of it, which was not successful. Although the zoom on it is much better, it performed very poorly with motion and low light. Anyway, lesson learned! The key caps are ‘Red Samurai’ f...
nantenda gambon for £5!
มุมมอง 246 หลายเดือนก่อน
I bought a 500 in 1, nantenda gambon, completely legit I'm sure! It works! www.aliexpress.com/item/1005005701642623.html I also occasionally write. You can see my author page on Goodreads here: www.goodreads.com/author/show/49736919.Stanley_Percival_Simmonds
Trying out a £20 Sillyscope
มุมมอง 9946 หลายเดือนก่อน
I bought a very cheap oscilloscope on Ali Express. Will it work? Purchased from: www.aliexpress.com/item/1005005933288137.html I also occasionally write. You can see my author page on Goodreads here: www.goodreads.com/author/show/49736919.Stanley_Percival_Simmonds
Keyboard Summary and typing demonstration
มุมมอง 574 ปีที่แล้ว
Someone has asked for more details on the Keyboard, and for a Typing Demonstration. I was kind of thinking about a summary video for the keyboard project anyway, so tacking on a keyboard typing demo seemed easy enough. It's no Chyrosran22 though buddy. I've also written a book. See here: www.amazon.co.uk/Space-Worlds-SP-Simmonds/dp/1731518684/ref=sr_1_1 (I get more royalties if you *buy* the el...
6502 investigations: Single Step
มุมมอง 1494 ปีที่แล้ว
Oaf thinks about the clock, adds a single step function to the processor, has another ponder about the reset starting address, and finally discovers a small flaw in the single-step circuitry. I also show off my awesome surface mount soldering. Chips used for single step: 74HC73D (SOP dual JK Flip Flop). 2 of 2 flip flops used 74HC08 (DIP quad AND gate). 2 of 4 flip flops used. I'm also an autho...
6502 investigations: 24 bit bus monitor
มุมมอง 744 ปีที่แล้ว
Oaf bumbles his way through creating a 24bit bus monitor (16 bits for address lines and 8 bits for data lines). The DIS1417 is a pin for pin replacement for the TIL311 hexadecimal display, and as far as I can see is also no longer in production. I guess that, rather like most seven-segment driver chips these days, hexadecimal displays are a bit antiquated, especially if THT. Who needs hexadecim...
6502 investigations : Does it work? The NOP test.
มุมมอง 1864 ปีที่แล้ว
I bought some cheap 6502 processors from Hong Kong. I am suspicious. So I test them. You wouldn't believe it, but they actually work! I'm also an author (of sorts). *Space Worlds* Sadie has immersed herself in a long-stay gaming hotel playing Space Worlds, a multi-world questing RPG game made up of many cultures and different gaming environments. Exploring the world of Tarros, Sadie is looking ...
Deep Joy. Oaf plays with a APEM Hall-effect joystick
มุมมอง 7574 ปีที่แล้ว
Recovered one of these from scrap electronics, and wanted to see what it looks like on the Oscilloscope. I also wanted to test my new video capture system. Still some bugs it seems, alas, only solvable by having a computer with more umph. I can't say I found the blurb on the apem website overly helpful, but maybe the stick is just old. In any case, it works great. All I have to do now is find s...
Oaf side quest keyboard: We can rebuild him
มุมมอง 235 ปีที่แล้ว
Finally, I rebuild the keyboard, replacing the LEDs and switches and re-assembling. I have adjusted my gain a bit on the mic, so it should be louder (sorry about the background noise!) This concludes the construction phase of this project (and the keyboard is now in use typing this!) I will do a follow-up where I give the rationale for everything I did and a cost-up in case anyone is interested...
Oaf Side Quest Part 2 Keyboard: We have the technology
มุมมอง 135 ปีที่แล้ว
Second part of the Keyboard Side Quest. Here I talk (a lot) about LEDs and play practice with soldering and desoldering delicate surface mount components. Spoiler Alert: They are all really small. I might actually get to completing the keyboard side quest in the next video! (Hey, think of the six Ps - Perfect Preparation Prevents Pery Poor Performance). Moving from the electronics of 25-30 year...
Oaf Side Quest: The destruction of the mechanical keyboard
มุมมอง 475 ปีที่แล้ว
In this Build of Doom Side Quest video I make a modification to my Tecknet mechanical keyboard (I change the keycaps and compare the action to the existing one) and then I dismantle a second Tecknet keyboard and discuss how it works and what I am going to do with it. I explain everything I am doing and my reasoning, such as it is. Hope ppl find that is helpful. Keyboard: www.amazon.co.uk/TeckNe...
Oaf Sets up a domain (build of doom part XI)
มุมมอง 45 ปีที่แล้ว
Oaf Sets up a domain (build of doom part XI)
Oaf Sundries and Fun (Build of Doom pt X)
มุมมอง 165 ปีที่แล้ว
Oaf Sundries and Fun (Build of Doom pt X)
Oaf Virtualization the easy way and some stress (Build of Doom pt IX)
มุมมอง 55 ปีที่แล้ว
Oaf Virtualization the easy way and some stress (Build of Doom pt IX)
Oaf Virtualization pt I Build of Doom pt VIII
มุมมอง 145 ปีที่แล้ว
Oaf Virtualization pt I Build of Doom pt VIII
Oaf chills, and lights up (Build of Doom pt VII)
มุมมอง 205 ปีที่แล้ว
Oaf chills, and lights up (Build of Doom pt VII)
Oaf Corrects his errors the easy way (Build of Doom pt VI)
มุมมอง 85 ปีที่แล้ว
Oaf Corrects his errors the easy way (Build of Doom pt VI)
Oaf battles RAID and network and installs fedora
มุมมอง 55 ปีที่แล้ว
Oaf battles RAID and network and installs fedora
Oaf contemplates the bios (Build of Doom pt IV)
มุมมอง 185 ปีที่แล้ว
Oaf contemplates the bios (Build of Doom pt IV)
Oaf contemplates air flow (Build of Doom pt III.V)
มุมมอง 85 ปีที่แล้ว
Oaf contemplates air flow (Build of Doom pt III.V)
2019 hardware build. (Build of Doom pt III - An Oaf tries to assemble delicate electronics)
มุมมอง 265 ปีที่แล้ว
2019 hardware build. (Build of Doom pt III - An Oaf tries to assemble delicate electronics)
8-bit Computer: Clock and Program Counter
มุมมอง 1136 ปีที่แล้ว
8-bit Computer: Clock and Program Counter
All good fun! Do you not have a "rolling timebase" mode on the scope for when you want to plot those slower-moving signals?
It might, the scope will do all sorts of things that I simply haven't played with (though I do have a vague memory reading something about it's storage capabilities). Unfortunately the software for the desktop is not so competent, and seems pretty much limited to enabling channels and setting the timebase and the v/div. But that is OK, bumping up a couple of orders of magnitude on the sig gen is just a button press away :), and I wouldn't want to come across as professional! One day, maybe, I'll figure it out. If you know of any decent desktop software that supports Hantek 4000 series scopes, I'd be interested.
1:06 Long press menu to get to this point in the menu
Cheers, I'll give that a go.
GD dude it helps if you start out with the IC straight, solder one pin on a corner,, solder another pin on the opposite corner,, now if it's not straight you only have to adjust one pin.. after it's straight, solder the other corner pins,, now put flux across one side, use a beveled tip, put a gob of solder on the tip, now glide the tip down the side with the flux flat part cocked sideways a bit,, if you did it right you should have all the pins soldered just like factory or as close to it .. SMD parts(chip resistors,chip capacitors, diodes etc.) will pop into place with hot air if you put some flux on them
I'm a big adherent of learning by your mistakes! Last time I did electronics SMD was a futuristic sorcery, so it is a bit of a step change (only with worse eyesight). I'll get there. One mistake at a time.
3:31 This is about what I would expect if I tried this. It’s why the Good Lord gave us through hole. 👍
LOL, It is the future I am told!
I subscribed your channel , goodluck.
Tell me about your camera setup. If you can take photo from your video recorder setup and post it in community thanks bro. I want to start being TH-camr like you :) Thank you for your attention and answer.
ipevo VZ-R HDMI document camera (www.ipevo.com) ezcap video capture -> USB 3 port Powered USB 3 hub* *The scope is not plugged into this hub, bc it doesn't work if it is! That goes straight into the PC. Dunno why. Just is. FY6800 signal generator has software on the desktop capable of controlling it (and capturable) "DDS signal PC software". I think it came with the sig gen, but I may have had to hunt it down on the internets. Can't remember. The Hantek DSO4104B 'scope also has software available for desktop control (and thus capture). This software came with the scope, but utilises the Keysight IO libraries (2023), which I had to download and install when I moved over to windows 11 (since the ones that came with the scope were a lot older). Mic is a blue yeti lights, are just cheapo ring lights off ebay, using reflected light off the walls rather than directly onto the object. It is all pulled together through OBS (using window capture for the apps) And then the editing is done in KDenlive Any post-filming audio is just done in Audacity. Computer is nothing special, just a NUC running win 11. At the time, the document camera was the best option available for me. It is relatively cheap, and enables both macro and wider desktop capture. For the closeup work, the camera is reasonably good (as you can see), though I find it helps to have it display the output on a separate screen as well - I use the loop out on the ezcvap box. That is not necessary though, because you can see the image on the OBS capture screen. I have tried older document cameras too, but um, yeah, they were not really up to the job. So check the specs and if you can, & see one running before buying. For filming though, can't stress enough how much sound and lighting matter. They seem like peripheral issues, entirely besides the point of the electronics, and they are at that, but they are also entirely necessary if you want to make watchable videos. I am a long way off working this stuff out myself. I'd love to get this all working on a Linux box, though I had some difficulty with the scope and the sig gen. One day I will figure it out!
You have good content quality compared to your subscribers. Good job and do keep going.
Cheers dude, appreciated.
@simmo1024 :)
That was a good deal, honestly. Was a function generator added to the firmware?
I don't know. I will see if I can see next time I get it out.
Watching it back, I note that the output signal is more like 3x the frequency of the square-wave clock, rather than 2x I say in the video. Not entirely sure why, or that I ultimately approve. I think if I use this clock and sense circuit in future I'll maybe drop a RC circuit of the clock to make it more sinewavey.
can I use this to calibrate a reel to reel tape recorder you think?
The background noise is horrendous fan noise is caused by my 2014 NUC going into overdrive whenever I try to capture video. Another problem to resolved!
I realize I'm late to the party, but what you need here is Woz's single step/single instruction circuit - it's close to what you made here but just uses a 74'74 and switches + buttons instead of buttons. I'll do a video on that soon :)
Hi, I have a tablet with joysticks integrated but suddenly one joystick don’t work stably how can I trouble shoot if it’s hardware or firmware issue? Is the a check list to verify it’s hardware or not? Thank you
The reset sequence takes 6 cycles so the address bus is probably junk during this sequence. The SYNC line indicates an opcode read so if you are using this to step you will skip the reset sequence and then stop on the first opcode. If you ignore SYNC and step individual cycles, you can count the first 6 cycles and then you will see $FFFC on the address bus where it starts to read the reset vector.
Not legit. Different mfg cases but the same date? I don't think so.
No, they are obviously NOT Original 1980s 6502s, I'm guessing they are 65C02's - because they DO work, and interestingly, will run at very low clock speeds, which if my memory serves, the original 6502s would not.
@@simmo1024 I know this is an old video, but from WikiPedia, you could prove that! he 65C02 fixed several problems in the original 6502 and added some new instructions, but its main feature was greatly lowered power usage, on the order of 10 to 20 times less than the original 6502 running at the same speed
@@muxerbaker4638 I might have a look at some point.
The modified keyboard definitely looks better, and sounds better! Even though the switches sound almost identical, I can definitely hear the plasticness of the original!
There is a definite change in the feel of the switches though, the clicky bump feels very different. The sound is deeper and more satisfying - which I would put down to the better quality keycaps. The Gateron Clears are probably a little light for my heavy-handed typing.
Can you please show the technet keyboard with more detail and with a typing test?
th-cam.com/video/vVeMq0UdEXA/w-d-xo.html
I think you need a different switch solution Steve as the time your finger is on your switch divided by the speed the clock is running at (plus contact bounce), means lots of pulses are sent and it steps through more than one op.
The plan is to have a separate clock for the single-step. I may well use that clock for the single-step mode switch as well. I have some goodies on the way from Hong Kong which may make things more interesting. Also, have some RAM on the way - a full 64kb! Not sure which will come first...
Nice to see you mate... a little 'Max Headroom' but cool!
Can you come and light my Christmas tree this year please!!!
I wouldn't dream of being able to compete Dave. But... I reckon a Raspberry Pi, a Hue+ and some home-made RGB LED arrays might just do the job :) You could put Jingle Bells on endless loop and have the lights dance along to it. 8).
Where is your ESD wristband Steve?
Me? I'm low static I am. My impedance is less than the resister they put in the wrist straps. :)
Wow, you really can't catch a break with this build. Looks like it was going to be pretty epic though.
Wow, that sucks.
Just a bit. Build is probably going to be delayed for a couple of weeks at least now.