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Make your own Spy Bug (Arduino Voice Recorder)

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More project information (code, schematic,...) on Instructables: www.instructables.com/id/Make...
Parts list (incomplete, see Instructables for more, affiliate links):
Aliexpress:
1x Arduino Pro Mini: s.click.aliexpress.com/e/_d62...
1x LiPo Battery: s.click.aliexpress.com/e/_dWb...
1x TP4056 LiPo Charge/Protection Board: s.click.aliexpress.com/e/_dX8...
1x Micro SD Card Adapter: s.click.aliexpress.com/e/_dUy...
1x Electret Mic + MAX9814 Amp: s.click.aliexpress.com/e/_dT1...
1x Tactile Switch: s.click.aliexpress.com/e/_dXI...
1x 5mm Red LED: s.click.aliexpress.com/e/_dV6...
1x 2kΩ Resistor: s.click.aliexpress.com/e/_dTP...
Ebay:
1x Arduino Pro Mini: rover.ebay.com/rover/1/711-532...
1x LiPo Battery: rover.ebay.com/rover/1/711-532...
1x TP4056 LiPo Charge/Protection Board: rover.ebay.com/rover/1/711-532...
1x Micro SD Card Adapter: rover.ebay.com/rover/1/711-532...
1x Electret Mic + MAX9814 Amp: rover.ebay.com/rover/1/711-532...
1x Tactile Switch: rover.ebay.com/rover/1/711-532...
1x 5mm Red LED: rover.ebay.com/rover/1/711-532...
1x 2kΩ Resistor: rover.ebay.com/rover/1/711-532...
Thanks to JLCPCB for sponsoring this video
Visit jlcpcb.com to get professional PCBs for low prices
In this project we will combine an Arduino Pro Mini with a couple of complementary components in order to create a voice recorder which could be abused as a spy bug. It has a run time of around 9 hours, is small and super easy to use. The recording quality might not be the best, but it should be suitable for many purposes.
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com)

Опубликовано:

3 фев 2018

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Комментарии : 608

@binachtzehn8492 6 лет назад

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 Год назад

What's the difference

@7ire Год назад

ohhh my god i was thinking same

@avendanorency5795 Год назад

how do you do this?

@ARandomHumanBein Год назад

@@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

@Jonrobrt 6 лет назад

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

@spicymemeboi2646 6 лет назад

sponsored by the NSA

@greatscottlab 6 лет назад

Not quite

@cosimo8046 6 лет назад

Spicy Meme Boi eazy plz

@FluorescentGreen5 6 лет назад

add a transmitter that transmits directly to the NSA then yes

@bloxcodes6576 4 года назад

@@greatscottlab Im sure it is

@YourLocalFBIAgent-gl7pu 3 года назад

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

@enricorov 6 лет назад

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

@dameck9570 6 лет назад

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.

@ams0063 6 лет назад

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

@jtcp27031 6 лет назад

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

@eumesmo-kd1tr 6 лет назад

This is one of your best projects, thanks

@buzhidao198 4 года назад

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

@guitarans 6 лет назад

Nevermore suprises for Christmas! 😀 Great as allways

@ams0063 6 лет назад

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

@thecoder5550 6 лет назад

Another week, another great video!

@antonrc1700 6 лет назад

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

@shreelakshmi8263 3 года назад

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

@tirth9865 2 года назад

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

@withteamsca4600 2 года назад

Is it working now

@antoniomateos902 2 года назад

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

@maxximumb 6 лет назад

Nice project. Thanks for another great video.

@zulkifluabubakar6331 3 года назад

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

@makaronimeesmakaronist6046 6 лет назад

I was just thinking about this. Perfect!

@R3MIXMODZ 6 лет назад

Thanks again for another great tutorial!

@PierAisa 6 лет назад

Well done Scott ! Very useful and super explained.

@greatscottlab 6 лет назад

Thank you very much :-)

@PierAisa 6 лет назад

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 6 лет назад

GreatScott! Here we are. Video of this night ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZBMiIQ5rJl0.html

@bardenegri21 6 лет назад

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 6 лет назад

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

@Hex-Mas 6 лет назад

RPITX can accomplish this.

@cdefgah4343 6 лет назад

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

@kvlpnd 6 лет назад

Excellent video as always.

@Ripaltico 6 лет назад

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

@greatscottlab 6 лет назад

You're welcome :-)

@easyelectronics4364 6 лет назад

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

@sumedhburbure4173 6 лет назад

This was a great video. Thank you:)

@CarlosBravo13 6 лет назад

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

@Blue-bf8lv 6 лет назад

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

@deadchords4919 6 лет назад

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

@greatscottlab 6 лет назад

I knew it ;-)

@tseckwr3783 6 лет назад

Keep up the great work.

@JR-lx8nn 2 года назад

Nicely done. Thank you. JR

@kgrez96 6 лет назад

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 3 года назад

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

@Arvinthhh 6 лет назад

Loved it! 😍 Awesome

@strapatser9427 6 лет назад

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

@greatscottlab 6 лет назад

Also possible

@Jan-ij2dt 6 лет назад

But it'll be to bright?

@danya023 6 лет назад

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 4 года назад

@@danya023 neeeeerd

@danya023 4 года назад

@@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".

@WildfoxFabrication 6 лет назад

congrats on 700K!

@dimitrisoikonomou4748 6 лет назад

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

@akshaykolekar5903 6 лет назад

Thank you for uploading video of my adivice !

@easyelectronics4364 6 лет назад

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

@matyk985 6 лет назад

Nice video as always

@barbasbandas6665 6 лет назад

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

@paradox3875 6 лет назад

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

@greatscottlab 6 лет назад

Thanks mate :-)

@Zhaymoor 6 лет назад

Thank you for the great video :D

@SiddheshNan 6 лет назад

Really nice

@__.pranzzzz.__ 6 лет назад

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

@vickeypiyasang3762 6 лет назад

Best project brother!!

@PhG1961 6 лет назад

Cool video !

@p_mouse8676 6 лет назад

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).

@TheBrassn 6 лет назад

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!

@rodrigo_dm 6 лет назад

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??

@georgekot6377 6 лет назад

Great work !!!!!!!

@abdul.rahim.k 6 лет назад

Really..... Ur videos are really informative.....!!!!!😘😘😘😘

@zanpekosak2383 6 лет назад

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

@muhammadjibrael3649 6 лет назад

Nice work

@oskarpolanski3152 6 лет назад

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

@jimbobillybob1959 6 лет назад

Another Awesome Vid!!!!!

@efesstuff4936 6 лет назад

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 6 лет назад

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

@ben2280 6 лет назад

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.

@cremetoertchen0815 6 лет назад

Finally a new upload xD

@ankurnaidu 6 лет назад

i waited for this video for years

@akshaykolekar5903 6 лет назад

Me too...

@houseofelectronics5869 6 лет назад

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 :)

@avejst 6 лет назад

Thanks for sharing 😀👍

@peterppeetteerr3888 6 лет назад

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.

@systemofapwne 5 лет назад

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.

@frogstair 6 лет назад

Really cool!

@weston3303 6 лет назад

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.

@weston3303 6 лет назад

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.

@mdshabaz2591 4 года назад

hey Scott, as your name says you are Great!

@Nono-hk3is 6 лет назад

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.

@UselessDuckCompany 6 лет назад

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 3 года назад

no. just stop

@vincenzorubio4501 3 года назад

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 3 года назад

@@lonsteam4627 Fuck you sshole

@johntello8904 3 года назад

@@lonsteam4627 ?

@moritz3864 3 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-b1lAe7NNlOo.html

@anusheeltiwari 6 лет назад

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.

@zonetwelve5881 6 лет назад

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

@NBspark 3 года назад

good idea

@muh1h1 6 лет назад

4:09 LOL at that solder joint :D

@thomasstockem8369 6 лет назад

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

@georgioreshkov5624 6 лет назад

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). =)

@juliusionescu4905 6 лет назад

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

@sayantanmaiti2513 6 лет назад

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 6 лет назад

Glad you liked it :-)

@krzysztofsoja5301 6 лет назад

...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 6 лет назад

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 6 лет назад

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!

@GlennHamblin 6 лет назад

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

@giannirusso9639 Год назад

i built this and workss great.im having an issue working out how to debounce the switch because i will click once and it wont turn off it takes a few clicks to turn off but it is still capturing audio files

@dafilgofernandes702 6 лет назад

Thanks man

@Th3PingasTM 6 лет назад

CSI LIKE THIS VIDEO!

@lucasazumi274 6 лет назад

NSA like this video

@secondsettweezer9884 4 года назад

Disguise as a functioning USB charger and use that to also charge it, allowing the battery to mainly function as a backup?

@PPSRHD 6 лет назад

Is there a way to Not use an audrino board in this project? And can we store the audio in a SD card?

@gauravponnappa8257 6 лет назад

bro u r the best......

@anusheeltiwari 6 лет назад

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

@ArcAiN6 6 лет назад

Why not replace the arduino with an esp-12f, or esp32, and directly beam the recordings across the network to a local PC for storage?

@ECrackers 6 лет назад

Nice

@hamzahansari6900 Год назад

Very nice tutorial. What would i have to do if i have to transmit it over wifi also?

@engralmamun1823 2 года назад

Amazing

@yagneshpatel1183 4 года назад

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

@ziome3eg 6 лет назад

GreatScott! Have you tried to desolder this small mic, solder 3.5mm jack input (l and r channel connect to make mono) and connect any better mic?

@jyotishmanbharali3757 6 лет назад

great work sir. l would really like to have a tutorial on how to make a powerful h bridge capable of nearly 80 amps continuous using power mosfets and mosfet gate drivers controlled by Arduino using pwm signals

@Campen21 6 лет назад

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

@chinmoytahbildar3278 6 лет назад

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

@user-yw3ry4wd2x 6 лет назад

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

@DonaldSleightholme 6 лет назад

could a battery be charged from a microphone if you used a huge inductor to the charge circuitry then just place it in a noisy environment? 🤔

@user-vb3xz2ey1z 4 года назад

thank for teach Can I change the microphone to an earphone 3.5 port? I want to install a better microphone.

@pokulan 6 лет назад

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 6 лет назад

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

@pokulan 6 лет назад

Pixel Inside Or in EEPROM ;)

@TheGTP1995 6 лет назад

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 6 лет назад

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

@jamespae7019 6 лет назад

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.

@Darfy032 5 лет назад

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 5 лет назад

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

@ABID5 6 лет назад

Oh ya! This is what we want

@fleshTH 6 лет назад

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 6 лет назад

Sounds interesting

@STUDIO134 4 года назад

So the Library you used does only run on AVR based boards, any idea for a library that would also run on SAMD21. z.B. Arduino Zero

@akhiljoseph8360 4 года назад

I was trying to make a talking tom. Is it possible this way?

@zakups7777 6 лет назад

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

@greatscottlab 6 лет назад

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.