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The NoiseMakers (Part VII)

NoiseMaster VII

The next noisemaker in this ongoing and seemingly never-ending series is one of my favorites. This time we’ve done away with any sort of real “enclosure” and everything is just mounted on a board. We’re also using a real Arduino on this one. It’s an Arduino Nano, which you can find online for approximately $3USD nowadays. It’s quite a step up from the ATtiny85 chips used in many of the previous noisemakers.

NoiseMaster VII

Even though we moved away from an enclosure on this one, we still have to mount things, so why not model and 3D print some things? We’ve got a button and a potentiometer as our controls, and each one has a small printed part to allow for mounting to the board.

NoiseMaster VI

Again, the best thing about 3D printing in this process is you can create exactly what you need. With bits of scrap wood you’re constantly cutting and drilling to get things the right size. With designing your own parts, you make what you need. Here’s a piece that holds the button I had and has a small hole near the base to allow wires to come out.

NoiseMaster VI

This piece holds the potentiometer. It’s the correct thickness to allow the potentiometer to fit and the shaft to go through the hole. The holes for mounting screws are also the exact dimensions needed to work with the #4 screws I had. Making things fit together is about 90% of making.

NoiseMaster VII

Here’s a neat trick. Remember all those hard drives we took apart? Well, I saved all the magnets, and they’re handy to have around. Since they are attached to pieces of metal with mounting holes on them, I screwed one down to the board…

NoiseMaster VII

…and it’s perfect to hold a speaker in place. Really. That speaker ain’t going nowhere! You can pull it off, but it’s on securely enough that it takes some force, and it’s not going to fall off or get knocked off easily.

NoiseMaster VII

The Arduino Nano is on one of my Nano BOB boards. I use these to allow screw terminal connections to a Nano. (I really should get these listed on my Tindie store one of these days.) Power is provided by a Mini USB cable, and yes, there’s two 3D printed standoffs under the PCB. As a bonus, the wires used were pulled out of some phone wiring I rescued from a dumpster.

NoiseMaster VII

I like this one so much, I may be reusing some of the parts in another build I’m working on. Hopefully I can post about that in the coming weeks.

This is just one post in a series about noisemakers. Check out the other posts as well:

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The NoiseMakers (Part VI)

NoiseMaster VI

Once again we’re moving along in our noisemaker series and this time we’ve got a few new things going on, but again, we’ve got a device that makes noise when you press a button. This is also the first noisemaker that features an external speaker.

NoiseMaster VI

The enclosure is another simple wood affair, and there’s a push button, and we’ve also got a… gear? Yes, there’s a gear, and under the gear is a copper board which is usually used for making PCBs, but in this case it’s used as a thin surface that allows the gear to mount to the shaft of a gear motor hidden below.

NoiseMaster VI

Just like with the last noisemaker, I used some Forstner bits to hack out a large hole and then cover it with a plate. It makes the surface look nice, and the inside/bottom is a hidden mess (which is totally fine, right?) This noisemaker has one more trick up its sleeve, I mean, it would if it had a sleeve.

NoiseMaster VI

There’s no microcontroller in this one. The electronics consist of a power supply running to the button, then to the motor, and then to the speaker. That’s it. Interestingly enough, you can get some pretty cool noise happening just by running power through a motor and speaker. Since it’s a gear motor it’s already got a great whirring sound to it, so the speaker helps amplify it. And, the bonus is that by affecting the spinning of the motor, you affect the sound. (See the video below for a demo.)

NoiseMaster VI

When I started this project I had to find old speakers, and this is from a set I rescued from the trash and had to bust apart the old wooden cabinets that had way too many screws in them. (I had these sitting under my desk at work for a few months.)

NoiseMaster VI

Still, they’ve got a funky look and mounting them just took some scrap wood, plastic strapping, and a few screws. Easy speaker stand!

NoiseMaster VI

There’s a few more two-piece noisemakers coming, but this was the first one in the series I finished. Stay Tuned!

This is just one post in a series about noisemakers. Check out the other posts as well:

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The NoiseMakers (Part V)

NoiseMaster V

We’re moving along in the series with yet another noisemaker. This one features a control interface! Which is to say, there’s a potentiometer involved to alter the sound. This one is mainly wood with some pieces of HDPE added in. Originally I had the speaker mounted to the front, and it sort of looked like a radio, but for some reason I can’t remember, I moved the speaker to the back of the unit.

NoiseMaster V

Besides just having a button to activate the sound we’ve added a slide potentiometer. I grabbed a big pile of them from eBay years ago to have on hand, and I still have a lot of them around so I figured an audio project would be a good use for one. You may notice that the green button I used is a pretty close match to the green filament I used for 3D printing the potentiometer mounting plate. That worked out well.

NoiseMaster V

I designed the mounting plate so it could hold the potentiometer in place using two #4-40 bolts, which screw directly into the potentiometer to hold it to the plate. I then added four more mounting holes so the plate could mount to the enclosure. I kept those #4-40 for consistency. Again I’ve gone with the green PLA for the plastic parts, creating some interesting contrast between 3D printing with plastic and wood working. (And yes, there’s also blue HDPE pieces on this noisemaker.)

NoiseMaster V

Because the slide potentiometer needs to mount fairly close to the surface, and I’m using wood that is well over a 1/4″ thick, I had to chew out a bunch of the wood to make a big hole for things to work properly. I used some Forstner bits to make a rough slot in the top. Since the plate will cover it the beauty (or lack of beauty) of the slot didn’t matter much. (I’ve never really used Forstner bits in the past, but they’ve become a favorite of mine in recent years.)

NoiseMaster V

Our control interface, a button to activate the sound, and a slide potentiometer to alter the sound. I tried to position them for comfort when using two hands, though you can sort of operate it with one hand. The handle (knob?) for the potentiometer is also 3D printed, though it is covered in black Plasti Dip which gives it a nice feel when touched. I thought about making spares in case one “disappeared” during the show, but I never made more, and it did not disappear.

NoiseMaster V

The knob model had some rounded edges, and once again I’ll have to say I was pretty impressed with the Maker Select Plus at being able to handle it. It did take me a few iterations to get a knob that I liked, but this one turned out pretty well for a quick ‘n dirty project. It slid onto the potentiometer shaft very well as a press fit, and I felt pretty good that it would not have been easy to remove without some effort.

NoiseMaster V

And of course, one last hack… The screws I had were a bit too long for mounting the speaker as I did for some other noisemakers so I ended up hot gluing a white plastic puck behind the speaker to increase the distance so the screws would work. The puck was another thing I grabbed from the junk pile at work, because you never know when you’ll need some small white plastic pucks.

This is just one post in a series about noisemakers. Check out the other posts as well:

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The NoiseMakers (Part IV)

NoiseMaster IV

The next noisemaker in our series is a bit more sophisticated in its construction and finish. This is the first one that features painted wood, and as a nod to what one of my design instructors used to call the “El KaBong” I added a large arrow pointing towards the button that the user is meant to press.

NoiseMaster IV

This one is also a “standoff enclosure” (is there another name for it?) where there is a top and bottom surface, separated by legs (or standoffs.) The standoffs were 3D printed, and I do have to say that the MSP did a good job. The standoffs for the speakers were also printed, and those required a bit more detail to work properly…

NoiseMaster IV

You can see in the model the small indent needed for the speaker to mount. This is due to the metal from the speaker mounting holes being present, and not providing a flush surface for mounting. There’s also countersink holes designed into the bottom of the legs, to allow the screws to sit flush. I do enjoy being able to model parts that fit exact, with the holes for screws the perfect dimension. As this whole project moved forward I found myself combining wood working with 3D printing, and I liked it.

NoiseMaster IV

I think it turned out well. I didn’t really plan for the “Xmas” colors, but I had green filament loaded up, so I just went with it. The speaker is from a weird set of car speakers I got from the Hack Rack at Milwaukee Makerspace. They were encased in a plastic enclosure that was not fun to tear open, but the speakers were nice, and worth the time…

noisemaster-0230

Speaking of time, while the first few noisemakers I built were quick ‘n dirty, this one looks like it took a lot more time. At this point I was working on multiple noisemakers, so I’d still have plenty to do while paint or glue was drying, or I was waiting for parts to 3D print. Once again, this one just has an ATtiny85 making the noise. At this point I still had a pile of ATtiny boards and kept stuffing them into noisemakers. (I did branch out a bit later, though.)

NoiseMaster IV

This is just one post in a series about noisemakers. Check out the other posts as well:

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The NoiseMakers (Part III)

The NoiseMakers (Part II)

In our introduction post I mentioned NoiseMaster 3000 and all of the noisemaking devices we built. We’re now up to number three!

This one has a more unique look, due to the material I used. I believe the “wood” is actually Bamboo, as this was an old cutting board that we replaced years ago. I didn’t toss it because I knew at some point I’d use it for a project. (See, I do have plans for those things most people just throw away!)

The NoiseMakers (Part II)

I also used some square dowels and a very small red momentary push button. Again, pretty much everything is exposed, though I did at least countersink the screws. The large hole was there when it was a cutting board, and I drilled speaker holes. and then used a countersink bit to give them an angle. (I think the rough edges are due to it being Bamboo.)

The NoiseMakers (Part II)

This one also features 3D printed parts. Little green standoffs were used for the PCB, and also for the speaker, so the screws could be the appropriate length. And once again an ATtiny85 powers the noisy noise. (This one is even more annoying than the previous!)

This is just one post in a series about noisemakers. Check out the other posts as well: