Step 5: Connecting everything together

Now it's time to fire up our soldering iron and start connecting everything together.

As you can see this step is a bit long with lots of text and pictures, but when you finish this step you should have your own working Metronome.

Make sure to check out all the image notes!

There are a lot of pictures in this step so on the right bottom of every one there is an image note that displays the number of the photo.

Lets get started ! ! !

* Take the 8-pin chip holder and place it on the board where you want to solder it and solder it. Note where the little curve is, it is important that you place the chip in the right direction. (pictures 1 and 2)

* Cut a small piece of wire, about 4cm and strip the insulation of the ends. (picture 3)

* Use the wire to connect pins 4 and 8 by soldering them. (pictures 4 and 5)

* Take another small piece of wire, also about 4cm with stripped ends and use it to connect pins 2 and 6 by soldering it. (picture 6 and 7)     (You should get something that looks like in picture 8)

* Use the 1K ohm resistor and solder it to pins 4 and 7. I soldered one end of the resistor to pin 4 directly and the other end I soldered to one end of the wire and ran the wire to pin 7.  (pictures 9, 10 and 11)

* Take the potentiometer and solder it to the board ( picture 12 ) The potentiometer runs from pin 7 to pin 6. Take small pieces of wire and use them to connect the pins from the potentiometer to the pins of the chip holder. (pictures 12, 13, 14 and 15 )

* Lets take our capacitor (picture 16) and solder its longer pin to pin 6 on the chip holder and its shorter pin via a wire to pin 1. (pictures 17, 18 and 19) (You should get something that looks like in picture 20)

* Take the 9V battery clip and solder the RED wire to pin 8 and the BLACK wire to pin 1.  (pictures 21and 22)

* Now it's time to mount our 2 LEDs. My LEDs are going to be on the top of the board so I am running a wire from pin 8 to the upper part of the board. (pictures 23 and 24)

* The next step is to solder the 1K resistor to the wire. (picture 25)

* Take the LED and put it so that you connect the end of the resistor to the longer, positive pin of the LED. (picture 26)

* Next step is to connect the negative, shorter end of the LED to pin 3 via a wire. Than to that same connection add a resistor. ( pictures 27 and 28)

* Add the second LED by connecting the longer, positive pin to the other end of the resistor and the shorter, negative pin to pin 1 of the chip holder via a wire. (pictures 29,30 and 31)

* Now lets take the second 22uF 16V capacitor and solder its longer, positive pin to the connection where the first LED and the second 1K resistor join. ( pictures 32 and 33). Leave the negative, shorter pin of the capacitor hanging for now. (picture 33)

* It's time to take the 8 Ohm speaker and solder 2 wires on each pin of the speaker. The wires should be about 10cm long. ( pictures 34, 35 and 36)

* Take the wire that is soldered to the negative pin of the speaker and solder it to pin 1 of the chip holder ; Take the wire that is soldered to the positive pin of the speaker and connect it to the negative pin of the capacitor that we left hanging. (pictures 37 and 38)

* Now that you have everything soldered together it is time to put in the LM555 timer chip. (pictures 39 and 40)

Lets move on to the next step and test our creation !

<p>if i want to replace the 2 leds with a motor ......what do i have to change?</p>
Both leds light up at once! <br>
what if i want to connect an earphone output...how and where will i place it?..i'm planning on using it for my drum playing...thanks..<br />
You would connect it to the same two wires where you connect the speaker.....afterall, an ear phone is like a small speaker.... now I can't really tell you witch value but you would probably need to put in a resistor.... Depends on the earphone.....<br /> <br /> I&nbsp;would need to look into it and tell you if any other extra components are needed!<br /> <br /> Keep in touch! <br />
ok...thanks a lot...<br />
or you can wire a 3.5mm headphone jack where the speaker is supposed to be. Means you can plug in a headphone and dont have to wreck a really good headphone for one purpose ^.^ hole i helped<br />
Could I use a 1/4 inch jack with same components?
even better&nbsp; idea!&nbsp; :)<br />
Thanks for the help the nice detailed pics really helped make this project move along. Is there any reason why u did not put this in a case ? I would think the speaker would benefit from a en closer.
Hi :) Great project. THX. I'm working an a simple design interaction project and I was wondering if someone can help modifying the circuit for my needs. (This circuit is as close as it gets to what I need) I need the metronome to work as a audible clock making the &quot;TIC TOK&quot; sound in a one sec. intervals. and every one hour (3600 sec. or 3600 TIC and TOKs) a LED should work for one min. (60 TICTOKs) and be turned off. The 2 LEDs in this projects are not needed. Can it be done with this circuit? Thanks all, ET
Thanks for the tutorial, man. This is my first test:<br><br>http://www.youtube.com/watch?v=sgB-Ih9jVt0<br><br>Later I will make a project box.
Hello, I have a question, can I use 22uF 50v polarized capacitors instead of the 16v?
Why Not??? Beats running to the store everytime you need a part!!!!!!!!!!!!!!!
Thanks a lot for this tutorial...am a noob @ this electronic, still u made me understand how this has to be done.compared to other metronome tutorial this one is more understandable..but a small suggestion.you could have also added how to make this work using a switch...anyways thanks.
<span class="short_text" id="result_box"><span title="constui esto pero se escucha muy despacio">I build that but I hear very slowly, How can we increase the volume of the Speaker</span></span>
Did you try putting a fresh battery? Are you sure that you bought the right speaker?
yes, try new battery, new speaker... new all ... and the desing is the problem i found this layout and solve my problem thanks for responds * R1= 100 K ohms//R2,R4= 10 K omhs//R3= 1 K omhs * Pot:1 M ohms *:C1=1 micro F/ 16 V or more C2=10 micro F/16 V///C3, C4=100 micro F/16 V. * TR1=2N2904 TR2=2N2219 * 555
Nice design here!! The 2 transistors should give plenty of punch to the speaker.
I am really glad someone took my desine and iproved it! My hat goes to you Jorg! :) So everything works fine now? :)
Awesome!! Our old friend the 555 timer is yet another application! Another Fun project to build.
Is the third pin of the potentiometer ever used? -did I miss something?
Yeah, they are. But in most cases, a Pot is used as a variable resistor, which only has 2 Pins.
I made as above and it is pretty good.There is a bit of problem .That volume level of the beat is low and practicing it wit a guitar makes the low sound difficult to hear.
This is great.&nbsp; Clean.&nbsp; Straightforward.&nbsp; Accessible.&nbsp; And I really like your explanations.<br /> <br /> My son and I were thinking about making a metronome which would have his drum teacher's voice yelling &quot;COUNT!&quot;&nbsp; This looks like a good start.&nbsp; Would you (or someone) please suggest enhancements so we could add our own sounds?<br /> <br /> Thanks!<br />
Well, a few ideas come to my mind and the first is that you buy a voice record/playback circuit or pull it out of a toy... You basically use the metronome schematic as a switch that switches on the record/playback circuit. Here is an example of a toy that has a record/playback circuit... I bought a couple of these toys and they are pretty easy to hack and mode... http://www.getlofi.com/?p=1152 Good luck ! Please don,t hesitate to PM me and ask if you have any more questions or some suggestions! Thanks! :)
im trying to do it and make it work but the intervals between beat are too long i don't know whats wrong with it can you help me how to fix it?<br />
You probably got the wrong potentiometer or didn't connect it in the right way...<br /> Try playing with the potentiometer and get back to me!&nbsp; :)<br /> Good luck! <br />
I made one in my electronics class exactly like this :D&nbsp;
Great!<br /> Ah, I wish I had electronic classes!&nbsp; :) <br />
Yea its a technical school so i picked if for my shop.&nbsp;
Sweet I wish I&nbsp;could build this !!!!!!!<br />
I built it and it works geat! =D
gari svetli mi samo 1 dioda i do konstantno znaci ne treperi ili neki trip nego samo svetli i nista :P pomoc?<br />
hmmm...<br /> Meni se jednom to desilo....metronom sam pravi puno puta.... i nikako nisam mogao da skontam u cemu je problem.......sve sam proverio...... na kraju sam odustao i napravio novi...<br /> Proveri da ti kondenzatori stoje kako treba.... takodje proveri da nije 555 chip falican.....&nbsp; to je to sto mogu da ti dam od saveta....<br />
&nbsp;kontam da mi je pregoreo 555 timer posto nisam koristio postolje a nemam lemilicu za podesavanje temperature tako da sam kupio novi 555 i postolje i sve skinuo sad moram opet da radim.. :P
Good Luck! <br />
&nbsp;eee, hvala brate na step-by-stepu mnogo je pomoglo :) uspeo sam konacno :D
napravio Radi kao zmaj!Brzica&nbsp;
&lt;3<br />
is there any way that i could use a 200k potentiometer as opposed to the 250k? even it resulted in limited functionality<br />
Hmmm... I think it would work buy it would just be more sensitive.... <br />
alrighty thanks, I'll be sure to post how it works<br /> <br />
Good luck and have fun! <br />
please tell me how this circuit works<br />
Well, what in particular do you want?<br /> It's all in the LM555 timer. The configuration of resistors and capacitors is what determens the frequency, the time between blink, the ON/OFF&nbsp;time...<br /> Google IC 555 timer and learn more!<br /> <br /> Feel free to ask anything more! <br /> <br />
hola estoy siguinedo tu post&nbsp; y ya compre todo y lo arme pero no funciona... me acabo de dar cuenta que mi speaker si es de 8 ohms pero a 2 watts y el que tu pusiste es de .2 w eso me afectara? espero y puedas contestar...<br /> <br /> <br /> hi I buy all but dont run ... I see your speaker and my speaker bouth are the same but your speaker is 8 ohms and .2 w and my speaker is 8ohms and 2 watts .. that change all?&nbsp;
Great ible -&nbsp; I had ( a while back) thought of trying to build something like this but your idea is better than what I came up with (and never built).&nbsp; I will try to build this one when I have a chance.
Thanks! <br /> Glad you like it! <br /> Post some picture of your own metronome when you build it!&nbsp; :D<br />
nice work.<br /> I gonna try it<br />
Thanks!<br /> Be sure to post some picture so we can see how does your awsome Metronome look like! :)<br />

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Bio: stanislav.drca@yahoo.co.uk stanislav.drca@gmail.com ______________________ One of my favorite inventors, and one of the most brilinat minds that ever walked ... More »
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