Make your own Spy Bug (Arduino Voice Recorder)

[@binachtzehn8492]

Quick tip for improving the code: instead of useing those rather compilcated switches just replace the filename with String(audiofile)+".wav" and you can record an unlimited number of files.

[@loufbread26]

What's the difference

[@7ire]

ohhh my god i was thinking same

[@avendanorency5795]

how do you do this?

[@ARandomHumanBein]

@@loufbread26 That with the code shown you can only create up to 10 files, instead, with this improvement, you can create as many files as can fit in the MicroSD

[@spicymemeboi2646]

sponsored by the NSA

[@greatscottlab]

Not quite

[@cosimo8046]

Spicy Meme Boi eazy plz

[@FluorescentGreen5]

add a transmitter that transmits directly to the NSA then yes

[@bloxcodes6576]

@@greatscottlab Im sure it is

[@YourLocalFBIAgent-gl7pu]

If you want a spy bug, just use your smartphone. Everyone has one and they are smaller.

[@bardenegri21]

The cool spy-bugs on TV send the audio through a radio. This gives me an idea for a "DIY or Buy": a walkie-talkie. There are a few very basic walkie-talkie tutorials based on arduino, but nothing really nice. You could try the analog version too, but a digital one would be more fun: sample the audio with the ADC, then send it over the air somehow (LoRA module maybe, or a cheapo 433mhz ook module pair), then receive and play it back with a DAC from resistors (or use a DAC chip, or a micro that has a DAC built-in like the SAMD21 found in the Adafruit Feather M0).

[@cummins6945]

www.aliexpress.com/item/FM-Frequency-Modulation-Wireless-Microphone-Module-DIY-Kit-FM-Transmitter-Board-Parts-Kits-Simple-Electronic-Production/32749629485.html This sends audio through FM radio

[@Un_Pour_Tous]

RPITX can accomplish this.

[@cdefgah4343]

You can easily achieve this by building a small FM transmitter, it is very tiny, easy to build and ceap (

[@shreelakshmi8263]

I tried this for my mini-project, it worked successfully! Thank you Great Scott

[@tirth9865]

Can you help me with it I am facing issues in my circuit

[@withteamsca4600]

Is it working now

[@antoniomateos902]

Could you please help me?? the led doesn't off when the push button its on :(

[@strapatser9427]

why not using the onboard led for notification, it would consume less power and you don't a extra led

[@greatscottlab]

Also possible

[@Jan-498]

But it'll be to bright?

[@danya023]

Unless you PWM it (and given the inherent complexity of recording audio on something so much not designed to do so), I think that would be a higher current draw than is desirable.

[@ninovitaliano7943]

@@danya023 neeeeerd

[@danya023]

@@ninovitaliano7943 I'm honored someone noticed, thanks. It's true though, isn't it? The onboard LED is rather bright and it takes around 10-20 mA, and if you're running off a battery you want to cut down on the current draw as much as you can so this is something you would disable first. The other option is to use PWM to modulate the LED, but AFAIK pin 13 doesn't have hardware PWM, so you have to spend processor cycles on this, and I bet that there's not much free processor time left over from "recording audio on something so very much not designed to do so".

[@p_mouse8676]

16khz is a very odd sampling rate. So make sure you always have subtraction of 44.1kHz or 48khz. (32khz, 22khz or 11khz) Also it's good to use some input filtering to prevent extra distortion (Shannon theorem).

[@ams0063]

I can’t tell you how happy I am I was in great need of such a thing thank you very much

[@PerKroon]

Actually did something similar with an ESP32 so I where able to control the "bug" via my phone, even download the files. :)

[@nolmon4948]

I am looking for a similar project you are describing, could you share the code?

[@isap-nikkoramos2660]

I am trying to do the same project with esp32 but Im new to this board. could you share the knowledge with me too? Thanks in advance

[@samchenyh]

Please share codes, doing a similar thing for my place. Thanks

[@ibrahimjinaah9046]

Send link to that

[@zulkifluabubakar6331]

Please help us send with the code 🙏🏼

[@zanpekosak2383]

The more I watch these videos the more I question my pick of going to school for an electrotechnician. Seems sooo damn overwhelming.

[@antonrc1700]

Anstatt ne gopro session zu nehmen mit hd auflösung und gutem Mikro. Trotzedem ein super Video. Danke Scott

[@barbasbandas6665]

6:42 hey GreatScott! I can see you on that solder :D

[@Blue-bf8lv]

Even know I don't know much about circuits and voltages it's still good to watch

[@zakups7777]

Why didn‘t you make your project with a perfect pcb? You are even advertising for jlcpcb...

[@greatscottlab]

True and I will use their service for more complex projects. But for such small projects I think that showing a circuit on a perfboard makes it more accessible for viewers.

[@richardwilliamjohnson8566]

GreatScott! Absolutely love your attitude. Keep up the good work!

[@UselessDuckCompany]

I'm trying to make a talking robot with a jaw servo that moves based on an audio signal from a 3.5mm audio jack. Any tips GreatScott?

[@lonsteam4627]

no. just stop

[@vincenzorubio4501]

I think that you can use the analog signal coming from the 3.5 mm jack and convert into a range of motion of the jaw servo! I think that should work

[@mrfashionguy1]

@@lonsteam4627 Fuck you sshole

[@johntello8904]

@@lonsteam4627 ?

[@moritz3864]

kzbin.info/www/bejne/mGLPcphtg7OfhdE

[@dameck9570]

Thats the kind of video why i subscribed to your channel I ordered my first bpc at jlcbpc just a half week ago trough you.

[@__.pranzzzz.__]

Hey GreatScott! make a tour of your lab in which you work for your projects .

[@buzhidao198]

The visuals in this video are beautiful. Watching the whole project come together felt so good. :O

[@pokulan]

As small as possible... Why not own PCB? ;p And instead of using switch 1.wav, 2.wav why not make string "record" + recordNumber + ".wav" ? :D

[@thriemboy1706]

and recordNumber could be stored on an extra recodNumberFile.txt to prevent overwriting of old data

[@pokulan]

Pixel Inside Or in EEPROM ;)

[@TheGTP1995]

Naming the files that way would look nicer but doesn't add any information. But if you wish you could add an RTC clock and add the timestamp to the file name.

[@zakups7777]

I think his focus was on the building, not the programming... ^^

[@jmsp000]

Indeed. And atleast for the use case of a spy bug, an arduino/micro controller is a little overkill. And what if someone discovers the device and destroys it and the SD card with the data? You can easily make a small FM transmitter (i made one thats 17x6.6mm). It wont transmit kilometers away, but enough so that you dont have to be right next to it.

[@ben2280]

for a "spy bug" I wouldn't use a push button with led. With a normal switch you can determin the state of the bug based on the position of the switch and you can use it as wake up signal to save battery when the device is off.

[@vaioskaliakoudas6388]

*You gained an hour of battery power range, by removin' both voltage regulator and smd led. What a big difference*

[@Ripaltico]

Your videos are always really nice, thank you very much.

[@greatscottlab]

You're welcome :-)

[@EasyElectronics2412]

The code is not getting uploaded can tell me pls????

[@Jonrobrt]

Impressive presentation - one of the best I have seen, great job!

[@WildfoxFabrication]

congrats on 700K!

[@systemofapwne]

You can probably keep the power consumption even lower by downclocking the arduino and pushing it into deep-sleep when not recording. In deep sleep, one can get the power consumption in the micro amp region.

[@thecoder5550]

Another week, another great video!

[@guitarans]

Nevermore suprises for Christmas! 😀 Great as allways

[@efesstuff4936]

Please make a videos about galvanic isolation, safety and upgrading video for your peltier module cooler 😀. Nice to see you continue making videos for us 😃😃😃.

[@greatscottlab]

I have almost all of that on my to do list. It will happen when I get to it.

[@Th3PingasTM]

CSI LIKE THIS VIDEO!

[@lucasazumi274]

NSA like this video

[@ankurnaidu]

i waited for this video for years

[@akshaykolekar5903]

Me too...

[@jtcp27031]

I had been looking for this for month haha, your videos are really good

[@barneman3213]

Scott Dont forget brother...there are still fm transmitters...they are as 100 years or more...

[@K2teknik.]

Almost 100 years, from around 1933

[@CornMCMais]

Im smelling some unqualified comment over here

[@barneman3213]

DUDE YOU GUYS ARE SO YOUNG AND DUMB AND FULL OF IT...IF YOU KNOW ELECTRONICS, heinrich hertz BUILT THE FIRST FM TRANSMITTER IN 1887 THEY WERE CALLED OSCILLATORS! NOW PICK UP YOUR FACE AND GO BACK TO HISTORY CLASS! BECAUSE YOU HAVE BEEN DEFACED!

[@barneman3213]

If you look even further there were several inventor the FM transmitter...GUGLIELMO MARCONI, Nikola Tesla and the list goes on...LOL! youre chatting to a geek who knows his sh**! especially when it comes to electrons...LOL! Dont let me spank ya!

[@CornMCMais]

Bro. Calm Down. I didnt even read what u said. I meant Hans.

[@thomasstockem8369]

Hey GreatScott how about a DIY Sunrise Alarm clock. Or maybe even a DIY or Buy Episode about it?

[@enricorov]

Great work! It's always nice watching a product of yours.

[@CarlosBravo13]

Fabuloso como siempre. Espero cada semana tus videos. Hasta estoy pensando en traducirlos para la comunidad hispanohablante. Awesome like ever. I hope your videos every week. Even i am thinking in to traslate your videos to the Spanish for LatinAmerica

[@eumesmo-kd1tr]

This is one of your best projects, thanks

[@deadchords4919]

Yesterday i was searching about this... Nice timing!

[@greatscottlab]

I knew it ;-)

[@Darfy032]

Hey Great Scott. I really like the idea of the spy bug but why dont make it even smaller, replace the arduino with atmega 328p chip and make a pcb with your partner - JLC pcb. Please make a part 2 of this video.

[@HichamHicham-wt7dy]

Good idea Landimm but he could also put it in his pocket and add a camera so that we can spy on the teachers and an RC522 RFID reader to make sure that nobody used it

[@daoneTM]

Ah, bulding an "illegale Abhöranlage"! IC :D

[@BikesBobbers]

some micro FPV cameras i use on tiny drones can record and broadcast medium fidelity analog video and audio at a tenth the size. they only require the camera/Tx bundle and a gumstick battery to operate, meaning its about 27g and 5-6cm^3.

[@BikesBobbers]

no, and if it's cheaper I don't see the point. I've made my own microcams before CMOS sensors had a processor and body that small, but i have no practical use for a spy bug, just a suggestion. no need to be so pretentious.

[@zulkifluabubakar6331]

This is a great video, It's the best I have seen that will help my project. 👍

[@myetis1990]

5:35 if you wanna blow your battery , a lipo cell is a great choice as a heatsink for battery charger ic :)

[@TheBrassn]

Hello Scott, great and very helpful videos you have there! May I ask you where you order your LiPo batteries from as a fellow German? Chinese traders don't ship here as far as I know. Thank you!

[@Nono-hk3is]

I've found using standalone AVR chips plus a crystal to be cheaper and smaller than using even Arduino nanos, plus an ftdi USB to serial adapter only for breadboarding. I use a pro mini as an ISP since some vendors who claim their AVR chips already have the Arduino bootloader are less than reliable in their claims.

[@DogRox]

That was great! :-) now add Bluetooth or Wi-Fi control that way you can control it from anywhere. just leaving in somebody's house and then leave and then turn it on whenever you know their home talking hee-hee :-)

[@HichamHicham-wt7dy]

This time u made a spy bug wit mic , next time do a camera, scott!😄😄😄😄

[@jakebeairsto]

What is this type of science called? Electrical engineering? Computer programming? Something else? How can I begin to learn about this field?

[@stoneheart9679]

Arduino is Johnny Of electronics

[@akshaykolekar5903]

Thank you for uploading video of my adivice !

[@EasyElectronics2412]

Akshay Kolekar The code is not getting uploaded can tell me pls????

[@Comrade_YG]

I need this for school so the teacher’s voice will get recorded and to spy on my private teacher who is doing really suspicious activities

[@rodrigo_dm]

Nice video as always, GreatScott never fails to deliver. The only thing that i disliked was the fact that i cant create SD card projects with good frequency of sampling and theres no explanation on hows that solved in this project. How to write on a SD so fast??

[@ams0063]

I am definitely going to build this. Thankyou very much as always awesome video

[@seanocansey2956]

You should use JLCPBC for this or another project to show everybody how great they are

[@greatscottlab]

Bigger projects with their PCBs are coming. It just takes a bit of time.

[@seanocansey2956]

GreatScott! Cool man, can't wait to see them 😃

[@nixietubes]

I have a feeling the sale on those PCBs is going to last forever.

[@joshhagen4182]

We should add a wifi and gps that can update audio via phone call make an internal menus and all you have to do is call the circuit lol and it will transmit audio via phone towers, would be a fun project

[@kvlpnd]

Excellent video as always.

[@fleshTH]

This would be good to use on a motion activated circuit. I can see this as a crude DIY Security system. It would be interesting to make it only record when sound is louder than a given threshold.

[@greatscottlab]

Sounds interesting

[@cremetoertchen0815]

Finally a new upload xD

[@makaronimeesmakaronist6046]

I was just thinking about this. Perfect!

[@damny0utoobe]

Scott, add a GSM radio for remote upload and now you're up to something.

[@cyriljaneugenio9549]

good day sir. everytime i run the code this error comes in: "'class TMRpcm' has no member named 'startRecording'" ?

[@khaledabd-elhalim1899]

kzbin.info/www/bejne/enWyk6CBnM2BaJY

[@khaledabd-elhalim1899]

watch this video

[@kgrez96]

Nice one once again! I'm thinking of adjusting this circuit to be a guitar looper pedal by replacing the mic with a signal amplifier / buffer and playing back the .wavs through an external DAC

[@zulkifluabubakar6331]

Hello, please have you tried this project and also amplifying the mic, Please I will like to know more, because am working on a similar project. Thank you

[@apurvaryan9671]

Finally greatscott u made a video. Now are you free from your MS program?

[@greatscottlab]

No

[@apurvaryan9671]

GreatScott! Waiting for the day to be as good as you in this field

[@EasyElectronics2412]

The code is not getting uploaded can tell me pls????

[@PierAisa]

Well done Scott ! Very useful and super explained.

[@greatscottlab]

Thank you very much :-)

[@PierAisa]

This night is my turn. I'll realize a video about 1KW DC motor control from scratch. Regards and stay forever like this. You are giving the possibility to everybody to learn something !!

[@PierAisa]

GreatScott! Here we are. Video of this night kzbin.info/www/bejne/kHOwmnyHatd9opI

[@user-yw3ry4wd2x]

I'm not sure why, but this has made me want to make a combat robot. 😂

[@mdshabaz2591]

hey Scott, as your name says you are Great!

[@muh1h1]

4:09 LOL at that solder joint :D

[@maxximumb]

Nice project. Thanks for another great video.

[@oskarpolanski3152]

Finally, you made the video i asked for;-)

[@paradox3875]

Great video. Short but informative as well,as usual! Grüße aus Hessen

[@greatscottlab]

Thanks mate :-)

[@tseckwr3783]

Keep up the great work.

[@Campen21]

You should try a DIY Digital Usb multimeter like the one you have show in previous videos :).

[@georgioreshkov5624]

Please make a DIY or buy video! That would be great! Great video by the way, but make it send the audio over the air (somehow). =)

[@LalanDesai]

Love From India!!!

[@LalanDesai]

Please pin my comment..?!!

[@zakups7777]

Haha ya think u would be someth special?^^

[@ShahZahid]

Love from bitch

[@abecoulter18]

Zahid Shah and their shitty life hack videos

[@ShahZahid]

Abe Coulter absolutely right and click Bates and hacks eg.how to recover data from courropt SD card and so on

[@sayantanmaiti2513]

That was awesome tutorial Sir!!! Really a small one but a very very interesting one....never imagined the TMRpcm can do such wonders...I only used that for SD audio playing

[@greatscottlab]

Glad you liked it :-)

[@krzysztofsoja5301]

...and that comment brings the questions: how to learn all capabilities of Arduino library. For example I need to use rc-switch library, there are some examples included but I am unable to find information about all functions of the library. Any help?

[@sayantanmaiti2513]

Kernel Panic you might need to see the header files... You need to understand what the author actually does while he defines the library... This might take a few days of thorough investigation

[@krzysztofsoja5301]

Sayantan Maiti that's what I did. I'm starting to understand that to really be able to know the particular library first I need to learn more about writing libraries. It's a lot of stuff to learn. Thanks for your reply! All the best for You!

[@yagneshpatel1183]

your amplifer break out have agc which amplified background noise replace local omp amp and it work fine

[@matyk985]

Nice video as always

[@dimitrisoikonomou4748]

This was awesome! I always wanted to make something like that but I could'nt

[@peterppeetteerr3888]

Hi, nice video, can u next time make diy microscope? Or any project with camera i want to know how to connect camera from broken smartphone.

[@anusheeltiwari]

How do you know such a wide range of things? What are your qualifications? Btw love your videos and watch them even during exams like right now.

[@chinmoytahbildar3278]

very good one.... By using bluepill that u have already explain then i think sound quality will be quite better

[@juliusionescu4905]

Hey nice video also build this on myself. But one question whats the programm you use to record on your pc with this extrem high frequencies. Thank you

[@houseofelectronics5869]

Nice Video Great Scott!! How is ur thesis going? Can you give tips to beginners in general , as to how one can start writing research papers? It seems very hard because most people don't have in depth knowledge . Any advice would be great :)

[@Postbus22]

"I created a Spybug, but please dont use it for spying" xD

[@sanjukumar]

Hello Scott, Why not make spy bug as a bug using FM transmission and recording in phone, I tried but facing problem with frequency. Why don't you make a video on that

[@greatscottlab]

I put it on my to do list

[@sanjukumar]

Bruce Lee , I don't know what is lora But I tried it using transistors and couple of passive elements. And some time it did work and later stopped working cz of frequency fluctuation or noise .

[@mhwahla]

that need an app bro :P

[@mhwahla]

iron man can you give me sketch of your work please ? it will help me in my final year project

[@mdshabaz2591]

@@greatscottlab Please do. I am doing the same project but getting only noise as output!

[@vickeypiyasang3762]

Best project brother!!

[@R3MIXMODZ]

Thanks again for another great tutorial!

[@Arvinthhh]

Loved it! 😍 Awesome

[@shawnlee2811]

Jeez,never thought you needed to spy on electronic circuits

[@robink.9459]

OR: you could use the dictaphone app of your phone. I guess most people find phones less suspicious as some self soldered device with a microphone sticking out.

[@zonetwelve5881]

This cool, I like so much.your video, Maybe next time can u try use ESP or ProMini make something like Mini GoPro?

[@ABID5]

Oh ya! This is what we want

[@bgarv7]

*To record all kinds of interesting recordings*

[@bitsurfer0101]

Maybe you could make a crude Beer Brewing system much like your crude Cocktail system?

[@AKG58Z]

May be you should make videos on diy or buy smartphone chargers with both THT or SMD Technology or both videos seperately

[@jimbobillybob1959]

Another Awesome Vid!!!!!

[@JR-lx8nn]

Nicely done. Thank you. JR

[@anusheeltiwari]

I would suggest you pcb etching to make your own pcb at home. Nice video

[@AbhishekThakur-wl1pl]

First.. My certainly favourite notification 😃️

[@GlennHamblin]

How about a VOX function so it only records when there is sound, and mostly powers down otherwise. Could dramatically improve battery life.

[@Ujwal5555]

Can you make a BMS for li-ion using arduino ?

[@greatscottlab]

It is on my to do list

[@Rocan0]

GreatScott! BMS -> big up for that ! A 12S BMS would be sooo good... Oh : put an ajustable number of battery cell !

[@Ujwal5555]

GreatScott! Thanks