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Circuit Chaos
Приєднався 20 вер 2019
Welcome to the Circuit Chaos channel - a private channel aimed to contain all things electro:
• My various projects to recreate, with full documentation,
• Various tools that I built,
• Some teardowns.
Stay tuned.
• My various projects to recreate, with full documentation,
• Various tools that I built,
• Some teardowns.
Stay tuned.
Xiaomi Mi Band 6 Reassembly
I just noticed that I left a spot without a silicone (I didn't see it when recording). There's only a thin sliver there. But I hope this sliver will be enough. The sliver probably widened anyway when I pressed the screen in.
Переглядів: 14
Відео
Xiaomi Mi Band 6 Teardown
Переглядів 5716 годин тому
After giving it some more thought I decided to just properly dry it without trying to separate the screen from the digitizer, check if it works then, and if yes, then glue it.
Cat Mate C300 Automatic Feeder Teardown
Переглядів 27День тому
Cat Mate C300 Automatic Feeder Teardown
Deteriorated film capacitor inside
Переглядів 78Місяць тому
Link to the previous video (electric kettle failure): ua-cam.com/video/iyiPEy4hjcM/v-deo.html Link to the EEVblog's video: ua-cam.com/video/ikp5BorIo_M/v-deo.html
Electric kettle disassembly and repair (with an interesting relay control solution)
Переглядів 40Місяць тому
One correction: varistor is actually BEFORE the resistor. It wouldn't make sense otherwise. It's incorrect at 2:12 and correct on the schematic. I also disassembled the failed capacitor. Here's the video: ua-cam.com/video/iyiPEy4hjcM/v-deo.html
Magnetic field detector with selectable gain
Переглядів 454Місяць тому
Previous iteration: ua-cam.com/video/y95aOvuVIvo/v-deo.html
Botching an on/off switch into a cheap wireless mouse
Переглядів 64Місяць тому
Botching an on/off switch into a cheap wireless mouse
Renault Trafic II Exhaust Gas Recirculation (EGR) valve
Переглядів 97Місяць тому
Renault Trafic II Exhaust Gas Recirculation (EGR) valve
EGR cooler and the bypass valve disassembly
Переглядів 51Місяць тому
EGR cooler and the bypass valve disassembly
Renault STOP indicator (and a random motorcycle repair story) (and too much talking) (and cats)
Переглядів 382 місяці тому
Renault STOP indicator (and a random motorcycle repair story) (and too much talking) (and cats)
CRT Micron UV / AnyTone AT-778UV / Retevis RT95 poor modulation fix part 2
Переглядів 3192 місяці тому
Part 1: ua-cam.com/video/Is-Efg0IhV8/v-deo.html
DIY mosquito elliminator (the only approach that really works)
Переглядів 1603 місяці тому
DIY mosquito elliminator (the only approach that really works)
Remotely controlled car engine kill switch
Переглядів 423 місяці тому
Remotely controlled car engine kill switch
MP1584 buck converter as a current regulator for LEDs (short, unedited)
Переглядів 654 місяці тому
MP1584 buck converter as a current regulator for LEDs (short, unedited)
Adjusting ECO mode in a portable cooler
Переглядів 645 місяців тому
Adjusting ECO mode in a portable cooler
QMX Assistant - to make QMX even more portable
Переглядів 2,3 тис.5 місяців тому
QMX Assistant - to make QMX even more portable
TP4056 / TC4056 li-ion battery charger with current selection and a voltmeter
Переглядів 1165 місяців тому
TP4056 / TC4056 li-ion battery charger with current selection and a voltmeter
70mai Midrive D07 dashcam battery replacement (due to „Time reset” message)
Переглядів 3246 місяців тому
70mai Midrive D07 dashcam battery replacement (due to „Time reset” message)
Connecting a Morse key (paddle and straight) to the PC
Переглядів 5537 місяців тому
Connecting a Morse key (paddle and straight) to the PC
Qi charger effect on an old analog monochrome TV
Переглядів 2,4 тис.8 місяців тому
Qi charger effect on an old analog monochrome TV
Kenik KG-4040DVF security camera reassembly (and some bird watching)
Переглядів 288 місяців тому
Kenik KG-4040DVF security camera reassembly (and some bird watching)
Switched mode power supply and main smoothing capacitor (short, unedited video)
Переглядів 4169 місяців тому
Switched mode power supply and main smoothing capacitor (short, unedited video)
dude! The audio track is to much man., Im out of here
You're not the first person complaining about the audio. What's wrong with it? Is it too loud? The alternative is me reading the text, or complete silence…
A very good presentation, especially explaining the swr side of things. Most others on UA-cam seem to forget this and concentrate on just achieving 50 ohms. Its a very neat compact design, most would be going for the traditional empty syrup can 😂. Cheers.
How did you do that😮show me steps please😮😊❤
1. Tube Arrester 2. It oscillates whn the capacitor charges and builds enough voltage to discharges through the tube 3. Time it takes for the capacitor to reach the breakdown voltage of the gap in the tube, in this case, your bulb, the capacitor in series(yellow), the capacitor(brown) value and the input voltaage u have given 4. you added the bulb in series so it takes longer for the capacitor to build up voltage 5. Diodes rectifier, capacitor in parallel to the tube to set frequency, capacitor in series to the circuit probably to limit the current flow into the circuit same for the bulb 6. No, capacitors don't have path to discharge
Is it a spark gap?
can i use 12.4V on it? ( i do not know at what point saying 12 is the limit for these kits... most of 12v transformers give a bit more +0.4. Is it safe ? Thanks!
1: I don't know what kind of tube this is, but it behaves like a unipolar sidac it seems. I really would like to know which tube it is! Is it a surge/lightning arrestor maybe? 2: The brown capacitor is charged until the breakdown voltage of the tube is reached, at that point the energy inside the capacitor is dumped in the arc. When the voltage is low enough, the arc breaks and the capacitor charges again. This takes some time. Then it all happens again => oscillation. 3: The frequency is limited by the current through the 60W bulb and the value of the capacitors. 4: If you use a small wattage bulb in series it probably will be slower. Lowering the input voltage can also lower the rate (until it's too low). Radiating the tube might increase the frequency. 5: The diodes and capacitors form a voltage multiplier, the 470nF capacitor stores the energy. 6: Only after discharging the capacitors first!
As to 1, I'll tell you in a couple of months, when the contest in „Understanding Electronics” is over :)
Where can I buy this replacement battery?
Online, look for this symbol: 602535
Ich suche das Schaltbild für CASIO SA-10
It would be easier if you could write in English, even using an online translator would be sufficient :) I don't have the schematic, but maybe if you describe the problem (why do you need the schematic?) I'd be able to help?
Can you please post the details of the syntax that you used to accomplish the “steps” you usually do? I am trying to learn both Linux and how to use the VLF Receiver ToolKit. I can’t get vtread to accept the .WAV files that I recorded during the eclipse on 4/8/2024. Thanks for any help you can offer.
Hi. vtread is used to read data in the internal vlfrx-tools format (stored by vtwrite). For .wav you need vtwavex - it will read .wav file and output data in the internal vlfrx-tools format. For SAQ (so to extract the frequency around 17.2 kHz, convert it to 400 Hz, and amplify) it would look like this: vtwavex <file> | vtfilter -h bp,f=17200,w=50 | vtmult -f16800 | vtmix -c1,-j | vtresample -r8000 | vtraw -ow -g3000 > saq.wav
@@CircuitChaos Thank you so much for your reply. I had missed reading about the vtwavex module. I will try it with the full syntax that you've given me. I really appreciate your help!
@@stephenmartin7489 no problem, feel free to reach out if you need more help :) I'm not an expert, but I more or less figured out how it works.
@@CircuitChaos After some experimentation, I realized that the stereo format of my .WAV file prevented the vtmix step from working properly. Only the left channel of my .WAV file contained the data that I wished to process. Once I removed the right channel and saved the file in mono format (ie. with just one channel of data), vtmix worked fine. I am documenting my experience in case my memory fades and for the benefit of others, too. Thanks again for your help.
Do you think it would be feasible to replace the faceplate ribbon cable with a longer one and use it detached?
Hi. Probably yes. All high-frequency circuity is on the main board. I'd only be worried about the microphone signal quality (it might pick up digital noise on the longer path) - but it's something to be tested.
Someone made a faceplate relocation kit already. Do a google search for "Anytone AT-778UV / Retevis RT-95 Remote Head Adapter Kit. Dual Band Radio"
Nice QMX video! Thanks! 73 de EXØQKT!
Shame about the crap music. Yes I turn off the sound and use CC if available.
Just an effing noise!
Good video, with good information. Definitely could do without the doinky repetitive drum beat in the background.
Sometimes I make videos where I speak, and then the music volume is very low to not interfere with speech, but some videos contain only the visual part, with slides and photos, and I can either put some music there, or make them completely silent…
Where did you get the JPC-12 vertical?
On AliExpress, look for „1PC 5.6M”.
@@CircuitChaos Thanks! 👍
Hi Adam, I actually planned some similar setup. I think it's a good idea to combine a) battery, b) active speaker, c) paddle and d) QMX in one unit as it increases the failure safety in the field. But on the other hand, I already own ready made battery boxes and active speakers. And for the paddle, I thought of mounting a Puttikeg or similar keyer on a leg / knee strap, so I can operate it slip free. I once keyed CW >30 WPM, but those days I've used a homebrew sensor paddle with no moving parts. Testing even top-notch finest mechanical paddles recently, I'm disappointed with the "delay" introduced by the mechanical movement of the contacts, even when it's very short in time. So I might revert to the sensor design.
nice work!
Thanks!
Hello. I guess you gave up on the idea. You haven't posted the second part.
Yes, it seems so... I still have it on my list, but with a low priority. But maybe I'll revisit it one day (if I don't change my car first).
It's strange how no one has found any analog aux input solution for the saa7709h processor. I'm almost disappointed, because it seemed like a simple problem at first. I leave it like that. Maybe it's not worth the investment.@@CircuitChaos
Great project thanks for sharing. Now, the Iambic paddle has two outputs to determine the Dits and Dats, the straight key only one output, how is the straight key connected to produce the different sounds?
With a straight key you determine the length of the sound, by holding and releasing the key. Key type has to be selected in settings of the vail (or vband) webpage.
You are using resistors that give you 50.9Ohms but the standard calls for 50Ohms. If I use 20-1K Ohm resistors I would have 50Ohms load. By using your equations I can’t calculate the VSWR 0:34
50.9Ω is close enough to 50Ω, it's fine
Seriously. I hate (and scared) to see this kind of signal. It's like the movie about an al*en invasion scrambled our earth signal 😂😂. Pardon me ✌️
Very interesting! You probably already know this- petroleum jelly or beeswax work very well on gaskets and seals for this sort of thing. David.
hello. are there any marks on battery? I'm looking for replacement too.
Hi. The original battery was marked AHB511515PS 3.7V 55mAh 1ICP6/15/15 SYNERGY. The one I bought is marked LITER 301215 3.7V 60mAh. The code corresponds to battery size (30 = 3.0 mm thickness, 12 = 12mm height, 15 = 15mm width). Here's the link to the (Polish) seller I got it from, with pictures: allegro.pl/oferta/akumulator-bateria-bluetooth-bt-301215-60mah-13680943284
i like
a może być dobrze zepsute ?
For a cheap radio it's not that bad
I don't know if this is the best or worst thing ever
I can say that I gained some experience and extended my imagination :)
VERY VERY GOOD WORK MAN VERY GOOD WORK 😊😮❤
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٩ نحب 0229ق2لق2لقللثلث2تهلث2تهلث2تهلث2ونلث2ةتلثثانقر على مقطع للصقه في مربع النص.انقر على مقطع للصقه في مربعانقر على مقطع للصقه في مربع النص9.انقر على مقطع للصقه في مربع النص.انقر على مقطع للصقه في مربع النص.299 النص.انقر على مقطع للصقه في مربع النص.انقر على مقطع للصقه في مربع النص.
Awesome video! Great work!
I am about to make an adaptor to use a headset with my Anytone variant.
Excellent video and explanation, well done. What confuses me is that the crt space u which is a cheaper and less capable set contains a menu option to adjust the microphone gain whilst this more advanced set does not.
"PoLoZ oFIArE" 😹
Or are there just too many over modulated radios ?
No, there's too many of these out there with low deviation.
Can you not just up the gain???
How exactly would you set the gain up in this radio?
Is this CRT V1 version without VOX or V2 version with VOX? I heard that in the second version they improved the modulation and maybe you don't need to replace the electret microphone?
It's the version without VOX. I keep my callsign private on UA-cam, but we talked today on FM-Link about it and I was using exactly this radio :) You had good modulation, so I think you'll be fine without the modification.
@@CircuitChaos O rany... to Ty byłeś??? Trafiłem na tą stronę po tym jak mówiłeś o ew poprawkach :-)
@@ALFA_HOTEL a no, świat jest mały :)
@@CircuitChaos Podczas dzisiejszej rozmowy sie trochę wtrąciłem bo ciekawe było porównanie i szczerze mówiąc nie zapisałem Twojego znaku. Wyślij mi namiary na Ciebie mailem. A co do mikrofou to zamówiłem taką wkładkę (kosztuje cos ok 1 zł.... i spróbję czy bedzie jakaś różnica :-)
@@ALFA_HOTEL Witam, mam podobnie w anytonie, wymiana wkładki poprawiła modulację? Jaki rezultat?
Interesting and inspiring!!! Thanks!!!
is there an alternative to the capsule?
I know of two other videos with different approaches. One is about enlarging the hole for the microphone: ua-cam.com/video/lYYfL-t6r6A/v-deo.html I did it and it didn't help - but it's worth giving it a try. Another video involves adding an additional amplifier. I didn't test it, but it might help too. It's in French and I don't know a word in French, but the mod is pretty simple. ua-cam.com/video/OYL5F3AbmFM/v-deo.html
Where can I buy the microphone capsules? Thank you very much
I don't know where you live so I can't advise any particular shop, but I guess any larger shop with electronic parts should have these capsules. You can also try eBay or equivalent in your country.
What is the model number of the microphone? Or it's specifications?
Szkoda że nie po polsku.
Celuję trochę dalej - zakładam że jeśli ktoś interesuje się elektroniką, to angielski, lepiej lub gorzej, zna tak czy inaczej, bo jak chociażby czytałby noty katalogowe?
@@CircuitChaos W elektronice jakoś sobie radzę. Z Twoimi opisami już nie bardzo. Trudno
Pełna profeska!!
Nice vid! :3
Trzeba przyznać że wygląda a w zasadzie miga genialne! A i częstotliwość jaka!
Co to jest ultrasonic motor i na jakiej zasadzie działa? Jaką ma przewagę nad silnikami DC lub krokowymi?
Just bought some of these exact tubes!!! Now.....if only I could make them work 🤔
This video should suffice - there's a circuit diagram and code presented :)
@@CircuitChaos time to see if I have any skill haha 😅 - great vid btw 🤟🏻🤟🏻
Circuit Chaos wondering if there's a way to just make this thing glow? Like for decoration but simple, just switch on an off, is that possible?? Thanks!
@@Dampfman sure. In most simple case you might need just two power sources. One connected to the heater (1V, 30mA, polarity doesn't matter) and another one for the anode (50V, 740µA max, positive to the anode, negative to one of the heater pins). Then - although I didn't test it - you should connect the grid to one of the heater pins (the one you connected the positive side of the heater voltage to) and it should glow.
Circuit Chaos thanks! I'll give it a try I found some data sheets and I have a couple tubes to test haha thanks again!