I just watched this again and not only do you show how to build it without any special parts but with the clips showing where your soldering one could actually learn how to read a electronic print (schematic) as well! wish I could have seen these when I first started out-sure would have made my life easier lol
Just built this circuit today using all amd parts on a piece of proto-board. I didn't have any 2n3904 so I used BC817's. It worked quite well - better than i thought it would actually ☺ Edit: Forget to mention, I also only used 2 AAA batteries to power it and it still worked pretty good!
I've watched a bunch of your videos and they are all completely amazing and so very inspiring. I'm an amateur at DIY electronics, and I've never seen a board made like this. I can etch my own, but I think this way of making a board is very cool! thank very much you sir!
Not the most useful comment perhaps, but please can you make more of these videos? I both love the content and how you've made the videos, they are excellent! Of course, you probably have life on the other hand as well ;) But really, these videos are great and I really would love to see more! =)
Great job keeping the spirit of DIY alive and thriving. This is the only video I have ever seen that gives an alternative to soldering. Thanks for sharing information. There are many who appreciate it. B
can you please make videos explaining the why not just the how , call it fm design course , just tell us why there is so many capacitors and stuff like that .
Can you please tell me where the trim cap would be connected ? I'm guessing one to positive rail and I don't see where I would connect the other end. I'm a beginner. Any help much appreciated. Tia
Nice work I did make the the transmitter and its working but I need it to transmit on the higher frequency like the amateur band 2 metre like 144mhz range how to do that ane what do I need to change?
I've tried making two circuits so far but none of them work, I don't know what I'm missing but I think I need to understand how every component works in an fm transmitter, if you can make a video explaining the basic principle of how every component works in a fm transmitter, that'd be really amazing...
Hey daz, awesome! I'd like to build a boost converter to power the front end amplification stage, with a MOSFET or high power BJT transistor as the front end rf amplifier; with only a single 9V or 12V battery or even an electric bike battery... perhaps a daisy chain could be useful on the front end and the frequency may be altered within the VHF range to some non-interfering channel
Hi. Can I ask a resistor and a capacitor is one positive and one negative each side like a LED .if I hold a capacitor with the number facing me like it says 103 the left side and the right side witch one is positive. Not so shore about resistors. I been in to electronics since 1981 but I want to make some of these. Thanks
Love your smplicity build. Can you build a split system receiver/transmitter linked above water and transmitter/receiver below water say 2m below water linked by a cable? Below the water you may need to increase the power or what ever its called.
So, as you said the coil is made by 4 turns on 3 mm drill bead, right? But is there any other way of measure drill beads becoz I saw they r like 3/16 or 4/26 something like my question is how to measure which one is 3 mm ? Thx in advance.
Is it possible to feed the audio signal in, instead of a electret microphone? Nice work on that board, will have to do it that way this time around...low budget build and I have a bunch of Ethernet cables here that can do the wiring
Fun, I started building my first circuits without any board, then I started to use thick cardboard as a base. But now I have couple square feets of copper clad board in stock practically everytime. It is fun, but when it comes to more complex circuits, wiring that will be pain in the butt
+Edward Symons The coil is made from 0.6mm Diameter enamelled wire ,the wire does not need to be enamelled wire,you can use any solid core wire from : 0.4mm upto 0.8mm. And wrap the wire around a 3mm drill bit to make a coil.
I have built a lot of transmitters a lot of different ways but this I have to say is one way I never thought of ! pretty cool good job- BTW (Xerox-fish) He is responding to many emails from people who want to know how to do this WITHOUT etching the boards who knows why (I don't) but at least he answered them most wouldn't take the time- I think its pretty smart move to be honest
This kind of oscillator is not critical and works with a wide kind of Transistor types even most af Types. So there is no explicit RF Type Transistor necessary. Just trying.
Make your own circuit boards or a kit ,I buy it ,I love the kit formats.just a thought ,because there aren't always enough interesting kits to by sometimes.
Hello sir. I think in the past you had posted a video of an FM transmitter with stereo preemphasis circuit. Can you repost it or simply reply to me where I can find the circuit diagram?
+John M For most part the frequency is set by the tank circuit. Thats the 33pf capacitor and the inductor ,that the 5 turn coil. You can only use a 30pf capacitor. Or 2 x 15pf in Parallel to make 30pf or 2 x 60pf in Series to make 30pf.
Hello friend, i was trying to make your transmitter but i dont use a L1 coil 4 turn, i use transistor but the function like L1 coil 4 turn, and it didn't work. do you know what's the problem?? pleasee... this is for my exam
+Coenraad Scheepers Yes, but you would need a transformer or 2 and youd want to make sure you safely check with a multi-meter and contain the unit inside a housing
I have made a three stage transmitter ultima fm bug i replaced the 2n3563 with a bf 199 but unfortunately its range is too low about 3feet. Sometimes i get a clear sound but as soon as i move away sound becomes too low.frequency of it is not stable.pls help.
Hey, thanks for the vids. Unfortunately haven't managed yet to get one working! I think the weak point it my coil. Can you use copper wire? I've also attempted to break apart the coils in a transformer, but no luck! I've seen variable inductance Hollow coil inductors on alibaba , but am wondering what the inductance of the coil should be and whether it could be replaced even with standard solid inductors. Thanks!
dazaro3 I built this one and it works great, thanks. I modified a small transistor radio so I can receive it outside the broadcast band around 80 MHz. In my case the signal has to go through 3 walls so the range is only 60 meters (~ 60 yards). How can I modify it so I get a little more power, can you recommend a high frequency transistor to replace the 2N3904? Or any other way to boost the signal, maybe an additional stage between the mic amp and the transmitter?
You can use a simple antenna amplifier which is usually used in apartments houses. Just look for it on Amazon or eBay or next electronic shop. If you change one of the two capacitors (33 pF) to a variable capacitor the oscillator can adjusted in frequency.
hi mate, when buying capacitors, what voltage should they be? the higher the better is it? if some are higher than others in the circuit will that be a problem? as you can probably tell I haven't got much of a clue about this stuff. cheers pal
hello, sir I always watch your videos and it changed my life, sir, if you can to make a video about the jammer it will very good and which type of frequency Generate it?!
Hi, great video. I just suscribed. Could you please send me the link to the RF metter used? It looks DIY, pretty neat. I searched your videos but I couldn't find it. Thanks
⃕ Hello friend greetings from Spain wanted to know if that circuit consumes more than 200mA, so it could do with 2N2222A, esque I have 2N3904, since the latter works to 600ma, having if you manufacture a homemade frequency meter and expose yourself if you can, please your videos are a machine.
Current consumption on this transmitter circuit is less then 14mA ,please see end of video where i test its current consumption , a 2N2222A transistor will use a little more current ,about 18-20mA.
I can watch you for hours. Innovation, knowledge. Wow. Thanks again.
Help good afternoon my name is ABDULAZEEZ please what is the number transistor I am going to use sorry for my English
jlucasound you need to watch him for hours because for one easy video he needs around 30 minutes to one hour and more!
I just watched this again and not only do you show how to build it without any special parts but with the clips showing where your soldering one could actually learn how to read a electronic print (schematic) as well! wish I could have seen these when I first started out-sure would have made my life easier lol
I built one, it worked perfectly.
I really admire your work.
Can u give me that
great vid...its a good way of getting into electronics and not being scared of pcb's keep this style of vid comin plz love these little projects
The best DIY PCB I've ever seen. Thanks.
Just built this circuit today using all amd parts on a piece of proto-board. I didn't have any 2n3904 so I used BC817's. It worked quite well - better than i thought it would actually ☺
Edit: Forget to mention, I also only used 2 AAA batteries to power it and it still worked pretty good!
range?
I've watched a bunch of your videos and they are all completely amazing and so very inspiring. I'm an amateur at DIY electronics, and I've never seen a board made like this. I can etch my own, but I think this way of making a board is very cool! thank very much you sir!
The Arab
Thanks for your nice words,happy you like my videos.
Not the most useful comment perhaps, but please can you make more of these videos? I both love the content and how you've made the videos, they are excellent! Of course, you probably have life on the other hand as well ;) But really, these videos are great and I really would love to see more! =)
Great job keeping the spirit of DIY alive and thriving. This is the only video I have ever seen that gives an alternative to soldering. Thanks for sharing information. There are many who appreciate it. B
sir this clip is pure gold.well done
Another fun project Darren. Will enjoy building.
Thanks
Carl
BRILLIANT idea for the PCB. thanks mate
can you please make videos explaining the why not just the how , call it fm design course , just tell us why there is so many capacitors and stuff like that .
I just love the soldering part of it most!! very interesting tutorial...
Excellent video ...innovative cct board.. all these components are common. The inductor/coil is home made the Ae is just a length of wire.
Can you please tell me where the trim cap would be connected ? I'm guessing one to positive rail and I don't see where I would connect the other end. I'm a beginner. Any help much appreciated. Tia
Very Very thank you Sir ji for building FM 😊👌👆🙏
Nice work I did make the the transmitter and its working but I need it to transmit on the higher frequency like the amateur band 2 metre like 144mhz range how to do that ane what do I need to change?
Replace coil with a 3 turn
@@dazaro3 do you have any good trasmetar that have a 1w out put and stable frq I want to build a fox trasmetar for my culb can you help me?
The frq stability is not good any thing Wong I did maby?
I've tried making two circuits so far but none of them work, I don't know what I'm missing but I think I need to understand how every component works in an fm transmitter, if you can make a video explaining the basic principle of how every component works in a fm transmitter, that'd be really amazing...
Will this work as a fm transmitter for an mp3 player? Mount a jack plug and wire instead of a microphone?
Hey daz, awesome! I'd like to build a boost converter to power the front end amplification stage, with a MOSFET or high power BJT transistor as the front end rf amplifier; with only a single 9V or 12V battery or even an electric bike battery... perhaps a daisy chain could be useful on the front end and the frequency may be altered within the VHF range to some non-interfering channel
That was awesome man i cant wait to try this, greetings from Norway!
Hi. Can I ask a resistor and a capacitor is one positive and one negative each side like a LED .if I hold a capacitor with the number facing me like it says 103 the left side and the right side witch one is positive. Not so shore about resistors. I been in to electronics since 1981 but I want to make some of these. Thanks
wat does the cap between collector and emitter of the second transistor do?
Simply genius, thanks for sharing your video !
it is possible to set the FM frequency with a digital circuit such as
MCU, I mean digitally change the variables of LC parameters
On that circuit you are building could you use a BD131 or some RF pre-driver transistor, there are some 9v batteries that have 16x5 AAAA batteries.
Love your smplicity build. Can you build a split system receiver/transmitter linked above water and transmitter/receiver below water say 2m below water linked by a cable? Below the water you may need to increase the power or what ever its called.
nice project can we replace 2n3904 transistor what is the wire gauge and diameter for coil
I created one like this worked perfectly...
thank you....
r u help me
hello dazaro3,very good video. i will be building this transmitter.
This is a “VFO”which is unstable oscillator,so it's better to use "PLL" oscillator which is ...stable with wide frequency range
So, as you said the coil is made by 4 turns on 3 mm drill bead, right? But is there any other way of measure drill beads becoz I saw they r like 3/16 or 4/26 something like my question is how to measure which one is 3 mm ? Thx in advance.
3mm is 1/8th of an inch
***** www.bohleamerica.com/uploads/media/Millimeters_to_inches_Tabelle.pdf
Is it possible to feed the audio signal in, instead of a electret microphone?
Nice work on that board, will have to do it that way this time around...low budget build and I have a bunch of Ethernet cables here that can do the wiring
Please see my order videos where I built a fm Transmitter with a audio input, I have a few such videos.
Fun, I started building my first circuits without any board, then I started to use thick cardboard as a base. But now I have couple square feets of copper clad board in stock practically everytime. It is fun, but when it comes to more complex circuits, wiring that will be pain in the butt
dazaro3 This is a nice project. You have some excellent fabrication ideas. Thanks for sharing.
What gauge wire should be used for the 4-turn coil and the antenna.
0.6 mm i think
+Edward Symons
The coil is made from 0.6mm Diameter enamelled wire ,the wire does not need to be enamelled wire,you
can use any solid core wire from : 0.4mm upto 0.8mm. And wrap the wire around a 3mm drill bit to make a coil.
I have built a lot of transmitters a lot of different ways but this I have to say is one way I never thought of ! pretty cool good job- BTW (Xerox-fish) He is responding to many emails from people who want to know how to do this WITHOUT etching the boards who knows why (I don't) but at least he answered them most wouldn't take the time- I think its pretty smart move to be honest
How do i take the antenna hi freq signal and send it into a high power transistor to make it high power transmitter?
I made this model for a project of my university, and ir works perfectly, but se changed the transistor for one that is less noise
Exelent
This kind of oscillator is not critical and works with a wide kind of Transistor types even most af Types. So there is no explicit RF Type Transistor necessary. Just trying.
Make your own circuit boards or a kit ,I buy it ,I love the kit formats.just a thought ,because there aren't always enough interesting kits to by sometimes.
How could I connect a source of music such as a mobile phone? Directly to C2 or not
Hello sir. I think in the past you had posted a video of an FM transmitter with stereo preemphasis circuit. Can you repost it or simply reply to me where I can find the circuit diagram?
Thanks ..you good from baghdad iraq
what value caps would be suitable for c4 and c8 if I didnt have 33pf could i use a 47nf or 22nf? Many thanks for this video, very interesting!
+John M
For most part the frequency is set by the tank circuit. Thats the 33pf capacitor and the inductor ,that the 5 turn coil.
You can only use a 30pf capacitor. Or 2 x 15pf in Parallel to make 30pf or 2 x 60pf in Series to make 30pf.
Hello friend, i was trying to make your transmitter but i dont use a L1 coil 4 turn, i use transistor but the function like L1 coil 4 turn, and it didn't work. do you know what's the problem?? pleasee... this is for my exam
Can I replace microphone with jack input? And if yes, then how to do that?
But how do u know EXACTLY how few and far between to make the holes to poke? Are the exact measurements on the schematics?
If I were to use a 1/8 in jack and a capacitor to separate the dc, would it work well with any phone/mp3 player?
Is there anyway you could make a similar device in the form of a wall plug, and plug it into a 240V wall socket?
+Coenraad Scheepers Yes, but you would need a transformer or 2 and youd want to make sure you safely check with a multi-meter and contain the unit inside a housing
please post a working link for the pcb template the one you have is not working.
And one more. There are two types of capasitors. For example 33pf *50v and 33pf*25v which one?
I have made a three stage transmitter ultima fm bug i replaced the 2n3563 with a bf 199 but unfortunately its range is too low about 3feet. Sometimes i get a clear sound but as soon as i move away sound becomes too low.frequency of it is not stable.pls help.
Hello congratulations, i like now how buid the check the power rf what you show in this video, thanks
I Can't download the printable layout, broken link, could you re upload it please !!
Nice making.
can we control its functions with added controls wirelessly
Why haven't you uploaded any video for a while?
Your videos are great. Keep it up man!
are you able to adjust the broadcasting frequency on this transmitter?
Hey, thanks for the vids. Unfortunately haven't managed yet to get one working!
I think the weak point it my coil.
Can you use copper wire? I've also attempted to break apart the coils in a transformer, but no luck!
I've seen variable inductance Hollow coil inductors on alibaba , but am wondering what the inductance of the coil should be and whether it could be replaced even with standard solid inductors.
Thanks!
can have the part no. of the transistor?
dazaro3 I built this one and it works great, thanks. I modified a small transistor radio so I can receive it outside the broadcast band around 80 MHz. In my case the signal has to go through 3 walls so the range is only 60 meters (~ 60 yards). How can I modify it so I get a little more power, can you recommend a high frequency transistor to replace the 2N3904? Or any other way to boost the signal, maybe an additional stage between the mic amp and the transmitter?
how can we increase the range of this? to say at least 5 km
You can use a simple antenna amplifier which is usually used in apartments houses. Just look for it on Amazon or eBay or next electronic shop. If you change one of the two capacitors (33 pF) to a variable capacitor the oscillator can adjusted in frequency.
Successful project, clean transmission of
I can't get the pcb print, the url goes to the main screen and not yours.
Can you make 2km rench fm transmeter.??
which wire gauge used to make coil
Please can you help me on how to buy 22pf trimmers... i need 2 of them
How much and how can i get them?
what material u use to make the coil and where can i find the material.
hi mate, when buying capacitors, what voltage should they be? the higher the better is it? if some are higher than others in the circuit will that be a problem? as you can probably tell I haven't got much of a clue about this stuff. cheers pal
im interested in buying those trimmer capacitor.
can i use a phone tobpick ip the frequency it outputs?
Hi can I use C945 Transistor for this build?
Can you pls post the schematics and the part list....?
hello, sir I always watch your videos and it changed my life, sir, if you can to make a video about the jammer it will very good and which type of frequency Generate it?!
how do i connect the parts if i have a ready pcb from the shops?
what a good idear, and it worked.!!!!!!!!! thanks
Basically, does an FM radio work based on PWM and average voltage?
Hi. Can you please reupload the link to the pcb layout?
Hi, great video. I just suscribed. Could you please send me the link to the RF metter used? It looks DIY, pretty neat. I searched your videos but I couldn't find it. Thanks
Nice video presentation!
hi pal, where to get one of your little RF-POW meter, or made one based on 1602 LCD ?
Aliexpress
Very impressed
Hello darren, Any chance of a new video for christmas or have you stopped making them.
Been away working , very busy , i will be making more videos soon.
Ok great,looking forward to them.
im just getting into this stuff and was wondering about the Resistors, it says 47k but how many watts is it or does it matter?
what is the coil made of ? Cu
? If not, can i use Cu coil ?
Zubayer Ahamed Yes
Can I do this same in pcb board...?
I don't speak english so good.Which kind of material is the wire you use for wiring all elements together.
I would appreciate you answer.
where can i find schematic of that fm transmitter???
Thank you for this video. Ill give this one a try. Question: Is electronics a hobby or is it your profession?
⃕
Hello friend greetings from Spain wanted to know if that circuit consumes more than 200mA, so it could do with 2N2222A, esque I have 2N3904, since the latter works to 600ma, having if you manufacture a homemade frequency meter and expose yourself if you can, please your videos are a machine.
Current consumption on this transmitter circuit is less then 14mA ,please see end of video where i test its current consumption , a 2N2222A transistor will use a little more current ,about 18-20mA.
thanks very much dazaro3
Nice video! thanks very much
on the others I was able to convert but for 33pf and 10 pf I am confused????
+cgoncsplash
You can use 2 x 15pf in Parallel to make 30pf or 2 x 60pf in Series to make 30pf ,that will work just fine.
hi. is this legal without getting a licence?
cheers
Hello darren,Thats a good idea it looks nice and tidy,by the way where did you buy your new rf power meter .
Aliexpress
where can i copy print the circuit board please
Would you please tell me how to make fm transmitter from car fm mp3 device?
you inspire me
thanx a lot for a very informative video
can I use 1/4 watt resistors??