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Electronics

Created a High-Loudness ECM Microphone Amplifier that Operates on Phantom Power

Imadeamicrophoneamplifierthatcanrunonphantompowerandcanhandlehighvolume.CircuitCircuitdiagramThisisamicrophoneamplifierc...
Electronics

Got the PCB I ordered from PCBWay in just six days! and assembled the IV-6VFD clock!

IorderedPCBsfortheIV-6VFDclockfromPCBWaylastweek,andtheyarrivedinjust6days.HerearethedetailsaboutthePCBIordered.Fromorde...
Electronics

Using PCF2129, a real-time clock IC, with ESP32

PCF2129Operatesat3.3VThePCF2129isareal-timeclockICthatcanrunat3.3V,andisconnectedtothemicrocontrollerviaI2CorSPI.DS3231i...
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Electronics

All the numbers were displayed by dynamically lighting them with the beautiful and transparent VFD display tube IV-27M

Inthepreviousarticle,Idisplayedonlyonedigit,butthistimeIwouldliketodynamicallylightupanddisplayalldigits.Hereistheprevio...
Electronics

Displaying a single digit number with the beautiful and transparent VFD display tube IV-27M

ThistimeIwouldliketocontroltheIV-27MwithESP32anddisplaythenumbers.HereisthepreviousexperimentalarticlewhereItriedthisout...
Electronics

Shining the beautiful and transparent VFD display tube IV-27M

IlituptheIV-27M,whichIbarteredwitharetrodisplaytubeenthusiastinUkraine.FormoreinformationabouttheVDFIbarteredwith,please...
Famicom

The 3rd Try My Luck at Buying Unlabeled Junk Famicom Cassettes at a Recycle Shop

ThisisasectionwhereIbuyunlabeledcassettesfromthejunkFamicomcassettesectionofHardOffandtrytoplaythem.Thistime,Ifoundapurp...
Electronics

Designed a clock PCB for VFD display tube IV-6 and MM5316N and ordered it from PCBWay

NowthatIhavecompletedtheclockusingIV-6andMM5316N,IwouldliketoconvertittoPCBandorderitfromPCBWay.Hereisthepreviousarticle...
Electronics

VFD display tube IV-6 and MM5316N clock in alarm clock style

TheVFDclockImadetheotherdaywasbuiltintoanalarmclocktomakeitlooklikeanalarmclock.Thepreviousarticleishere.SolderingRemove...
Electronics

I made neon tubes glow with an inverter transformer and blocking oscillation

Theblockingoscillationcircuitisasimplehigh-voltagegeneratorcircuitthatcanbemadeusingonlyatransformer,transistor,andresis...
Electronics

VFD display tube IV-6 and MM5316N with clock source added to become a clock

Inthisarticle,IwouldliketoaddaclocksourcetothepreviouscircuittomakeitaVFDclock.Thepreviousarticleishere.50HzclockThecloc...
Electronics

I made a ring oscillator using transistors

Imadearingoscillatorcircuitwithtransistors,wheretheLEDslightupinsequence.RingoscillatorIfyouconnectanoddnumberofNOTgates...
Electronics

Making a clock using VFD display tube IV-6 and MM5316N

I'mgoingtomakeawatchoutofanIV-6thatIbarteredwitharetrodisplaytubeenthusiastinUkraine.PuttingtheVFDontheboardTheIV-6sIbar...
Electronics

Made a compact DCDC converter that generates high voltage for Nixie tubes from 5V

WehavecompletedaDCDCconverterthatgeneratesthehighvoltagerequiredforNixietubesfrom5V.Here'salookattheprocessofmakingit.Th...
Electronics

Blinking Neon Tube with Arduino

Hi,I'mkohanii.OurshopmakeshighvoltageDCDCconvertersforNixietubes.Youcanfinditat↓ThisDCDCconvertercanboosta5Vpowersupplyt...
Electronics

How to convert an Nintendo Famicom to video output super easily with FCAV

Here'showtouseFCAVtoconvertyourNintendoFamicom(NESJapanVersion)tovideooutputinasupereasyway.TheFCAVhasthemeritofreducing...
3D Printer

Lithium-ion battery-powered compact flashlight I made

Bycombiningalithium-ionrechargeablebatterywithaninexpensivecharge/dischargeboard,acompactflashlightwascreated.Configurat...
Electronics

I turned on the VFD indicator tube IV-6

IlitupaVFDindicatortubeIV-6thatIbarteredwitharetroindicatortubeenthusiastinUkraine.Herearethedetailsofthebarter.Specific...
Electronics

ESP32 reduced current consumption during DeepSleep by putting HX711 into power down mode.

IconfiguredascalewithHX711andmadeamailboxthatnotifiesmewhenthereismail.ByreplacingtheregulatorwithaDCDCconverterandtheUS...
Electronics

A retro display tube enthusiast from Ukraine and I exchanged my Nixie tube clock kit for his display tube!

IwascontactedbyaretrodisplaytubeenthusiastfromUkraine.HesaidhewasveryinterestedinalarmclockstyleNixietubeclocks.Hewanted...
Electronics

Modification of DPS605U, a Chinese regulated power supply with constant current function, almost eliminated the ripple.

WhenIexperimentedbyconnectingalargeloadtotheDPS605U,therewasquiteabitofripplenoiseonit.Pleaseseehereforthereviewandloade...
Electronics

Trying a different step-up circuit to see if a small high current transformer can be used as a power supply for Nixie tubes.

LasttimeItriedconnectingittotheNixieDCDCvoltageboostcircuit,butitdidn'tboostthevoltageproperly,soItriedadifferentcircuit...
Electronics

I got a small high-current transformer, so I experimented to see if I could use it to power a Nixie tube.

IfoundatransformerthatcancarrythreetimesmorecurrentthantheoneusedintheNixieDCDC,soIexperimentedtoseeifIcouldincreasetheo...
Electronics

The LCD panel of the iPhone broke, so I replace it by myself.

TheLCDpanelofIphonecanberepairedatacostofabout20US$ifyoureplaceitbyyourself.SoItriedtoreplaceitbymyself.BuyinganLCDpanel...
Electronics

ESP32-DevKitC's DeepSleep is consuming quite a bit of current, so I investigated the cause.

TheESP32-DevKitCisaboardthatmakesiteasytousetheESP32.IoftenusenottheEspressifSystemsgenuineESP32-DevKitC,butitscompatibl...
Electronics

A convenient item that makes the tip of a soldering iron that has become black and no longer soldered shiny

Ifyouuseitforalongtimeorleaveitpluggedinforalongtime,thetipofthesolderingironwillturnblackandthesolderwillnotstickatall....
Electronics

Added thermometer to NTP calendar & clock of Canon Canola L1211 display

IaddedathermometertoanindicatorthatwasmanufacturedduringtheshortperiodbeforethetransitionfromNixietubestoVFDs.SEPTANIXJ4...
Electronics

Revenge of buck-boost DCDC converter circuit to operate ESP32 with two batteries

Inthepreviouscircuit,whentheESP32triedtoconnecttoWiFi,thevoltagedroppedandtheESP32rebooted.Thistime,I'llchangetoaDCDCcon...
Electronics

Make a circuit using CH340C for ESP32 writing (success).

ThecircuitImadetheotherdaycouldnotrecognizeCH340Konmycomputer,soIusedCH340Ctomakethecircuit.Hereisarecentarticleonfailed...
Electronics

Make a circuit using CH340K for ESP32 writing (failed).

InordertowritetheESP32fromtheArduinoIDE,aUSBserialconversionICisrequired.ThistimeIwouldliketomakeacircuitusingCH340KasaU...
Electronics

The NTP calendar & clock was completed by controlling the display of Canon Canola L1211 with ESP32.

MakingtheclockwithaCanonCanolaL1211displayunitIwouldliketomaketheclock,sincetheworkIhavedoneuntiltheotherdayhasallowedme...
Uncategorized

The display of Canon Canola L1211 was dynamically lit with ESP32, and 11-digit numbers could be displayed.

EachsegmentofthedisplayunitofCanonCanolaL1211canbeturnedonandoffbyESP32Lasttime,Iwasabletoturnthesegmentonandoff,andIama...
Electronics

Canon Canola L1211's display unit controlled by ESP32 to display a single digit number.

EachsegmentofthedisplayunitofCanonCanolaL1211canbeturnedonandoffbyESP32.FormoreinformationaboutJRC(JapanRadioCo.,Ltd.)SE...
Electronics

Light up the indicator on an old calculator from the 1970s, Canon Canola L1211.

CanolaL1211TheCanolaL1211wasadesktopcalculatorsoldbyCanoninthe1970s.Itisconnectedtoanelectricaloutletandhasanorangeindic...
Electronics

I bought DPS605U, a Chinese regulated power supply, with constant current function and modified it a little.

TheDPS605Uisaregulatedpowersupplywithaconstantcurrentfunctionthatcanoutputupto60V5A.Thefour-digitdisplayofvoltageandcurr...
Electronics

The mailbox with a built-in "scale" that notifies me by e-mail when a mail arrives has been completed!

Ihavecompletedamailboxthatdetectsthearrivalofmailbyweightandnotifiesmebye-mail.WeighingwithHX711UsingastraingageandtheHX...
Electronics

A very easy way to accurately align the stencil with the PCB

ThisarticleisacontributiontoPCBWayPCBDesignTutorial.SMDStencilBeforesurfacemountcomponentscanbemountedonaboard,itisneces...
Electronics

Make a power supply circuit (step-up/step-down DCDC converter) to run ESP32 on about two batteries.

ESP32isamicrocontrollerthatoperatesatabout3Vto3.3V.I'mgoingtomakeaDCDCconvertercircuittorunonabouttwobatteries.Toseewhat...
3D Printer

Make a stand to stand the Nintendo switch with a 3D printer

OnthebackoftheNintendoSwitch,thereisasmallstandthatallowsyoutostandtheswitchupandplaywithit.However,itwouldoftencomeoff,...
Electronics

Make a flat light emitting lighting by processing acrylic into a light guide plate with a laser cutter

Iwantedtomakeaplaneluminescentlight.Thisisthesamemechanismusedinthebacklightingoflaptopcomputers,whereapatternisdrawnont...
Electronics

Eliminate The noise mixed in with the HX711 readings

IamcheckingthestabilityofascalemadewithHX711andastraingauge,andabnormalvaluesaremeasuredquiteoften.Iammeasuringtheweight...
Electronics

Designed a circuit to automatically switch the power supply from the two power sources (nothing designed to).

I'mdesigningabattery-poweredESP32-DevkitC.TheESP32-DevkitCcanbepoweredintwoways:fromUSBorfromanexternalpowersupply.Forth...
Electronics

Designed a power supply circuit to operate the ESP32 with two batteries (actually, I did not design it)

IwantanESP32-DevKitCthatrunsonbatteriesESP32-DevkitCisaboardthatallowsyoutouseESP32easily.ESP32-DevkitCcanbeoperatedbyUS...
Electronics

Easy Modification Nintendo Famicom Controller USB Kit is now available!

AlittleoveraweekafterIplacedmyorder,myNintendoFamicomcontrollertoUSBconversionboardarrivedfromPCBWay!Thankyouforeverythi...
Electronics

Sending measurement data to Ambient to check the stability of strain gauge "scales".

Iwouldliketoleavethe"scale"Imadetheotherdayoutdoorsforafewdaystocheckthefluctuationsinthereadings.Therefore,Iimprovedthe...
Electronics

See if I could measure the correct weight with a "scale" made from a strain gauge.

Ididanexperimenttoseeifthe"scale"andtheprogramImadetheotherdaycouldmeasureweightcorrectly.Here'sthe"scale"Imadetheotherd...
Electronics

Make the PCB that can be used with Nintendo Famicom controllers for a PC from PCBWay.

IwanttoplaygameswithanNintendoFamicomcontrollerWhenplayingonaPCwithanemulatorsuchasNES,youwillbeplayingwithagamepadthati...
Electronics

Making a mailbox with a built-in "scale" to let you know when the mail arrives.

Ifyourmailboxisoutdoors,youwillnotknowifyourmailhasbeendelivered.Often,wedon'tevennoticeforawhilethatthemailwe'vebeenwai...
Electronics

Modify the circuit of the HX711 module to operate at 3.3V and measure the weight with ESP32

HX711moduleis5VspecificationTheHX711modulesoldonAmazonisdesignedtoworkwitha5Vpowersupply.SincetheESP32hasasupplyvoltageo...
Electronics

GPS Nixie tube clock that looks like an alarm clock

IassembledtwoNixietubeclockswithGPSintheformofalarmclocks.Inthisarticle,weareassemblingtheproducthere👇👇.SolderingSoldert...
Electronics

How to use the GPS-equipped e-paper clock.

ApplypowerPrepareaUSBchargerathomeoraUSBchargersoldata100yenstore.PlugtheUSBconnectorintotheUSBcharger.Dothisnearawindow...
Electronics

How to set the time zone of the GPS-equipped e-paper clock

LearnhowtosetthetimezoneforyourGPS-equippede-paperclock.Youwillneedasmartphonetosetthisup.Thee-paperwatchwithGPSisnowava...
Electronics

GPS e-paper control PCB is placed in a photo frame and GPS e-paper clock is completed.

Inthisproject,IwouldliketointegratetheGPSe-papercontrolPCBintoaphotoframeandmakeitintoaGPSe-paperclock.Here'sa👇👇descript...
Electronics

Made the e-paper control PCB with GPS function.

Imadeacontrolboardforane-paperthathasaGPSmoduleandcankeepaccuratetimeatanytime.PrintingsolderpasteIhadthePCBandstencilma...
Electronics

JLCPCB charges for the same design panelizing

Inthepast,JLCPCBdidnothavetopayextraforimpositionoftwoexactlythesamecircuitsona10x10cmboard,butwhenIorderedthistime,Ihad...
Leaser Cutter

Stamp with the CO2 laser cutter EtcherLaserPro.

Whenyouusealasercuttertomakeastamp,youusuallyusesiliconerubber.ThistimeIwouldliketomakeastampbycuttingMDFwithalasercutte...
Electronics

Make a wooden key chain by engraving and cutting with CO2 laser cutter

ImadeakeychainfromMDFandveneer,engraved&cutwithEtcherLaserPro.PreparingtheprocessingdataFirst,convertmydogEva'sphototobl...
Famicom

Record the sound source of the actual Nintendo Famicom in stereo [MOTHER]

MOTHERspoileralert?Hi,I'mkohanii.ThissitesellsakittoturnyourNintendoFamicomintoapseudo-stereosystem.Thispseudo-stereotak...
Electronics

How to fix a Bose QuietComfort QC25 that has lost sound on one side for about $30.

DoBoseNCheadphoneshaveatendencytobreakthespeakerononeside?TwoofthembrokeIhavetwoQC25s,andoneofthespeakersstoppedworkinga...
Electronics

I made a dynamic microphone with the speaker unit of headphones! & I also tried it with ordinary speakers!

Hi,I'mkohanii.Inthefollowingblog,IhadrepairedthespeakersoftheBoseQuietComfortQC25headphones.WhenIrepairmyheadphones,Ibuy...
Electronics

How to distribute video to Windows 10, Mac, Android in LAN with OBS Studio

Hi,I'mkohanii.IntroducinghowtodistributevideofromawebcamorotherdevicetoanotherPC,Android,etc.SettinguptheOBSStudioMyOSis...
Electronics

Make the large 8x8 LED dot matrix even brighter

Hi,Konaniihere.It'sHalloweentoday.ImadeaLarge8×8LEDDotMatrixbefore.TheresistorattachedtolimitthecurrentoftheLEDis100Ω.Wh...
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