Instructables

WORLDS CHEAPEST VIRTUAL DRUM at $10 [ Rs.500] - using pc ( no drum module required )

Picture of WORLDS CHEAPEST VIRTUAL DRUM at $10 [ Rs.500] - using pc ( no drum module required )
DTX900K_nr.jpg
introducing the worlds cheapest electronic virtual drum :-

1. Construction under $10 [ 500 Indian rupees ]
2. Brain - PC using software- flexi music orchestra
3. interface device - uses pc keyboard to link software and hardware
4. quality - excellent since in uses the samples in wav. or mp3 format or any else provided be user ...i used Yamaha and Ronald samples to get the professional quality .
5. 4 drums + 4 cymbals + a kick ( can be increased ) with sensitivity control
6. sorry no velocity sensitivity
 
Remove these adsRemove these ads by Signing Up

Step 1: Parts list

Picture of parts list
all u need :

hardware + electronics + software

1. hardware :

1. wooden planks or plastic pipes to make a similar structure frame like ( if u want 4 +4 +1 ) :-
http://eqmag.com/article/yamaha-electronic-drum-set/Sept-2010/119075
2. hardboard (rough board ) plank cut into different diameter circles for drums and cymbals
i used :
drum : 7' snare two 10' toms and one 12' floor tom
cymbals: 5' bass cymbal two 12' crash one 10' hi-hat

3.
1.for attachments 8 suitable length stainless steel polished rods . out of which 4 are threaded out of which three are 1 inch and one for bass cymbal is 3 inch threaded
2. 4 nuts ( of size of the threads - i used no.)
4 voicers small + big , 4 springs + 4 chavi nuts
plz see image for corect idea
3. wooden pieces for bass pedal + suitable sized door hinges ( see image ) + 3 1 inch springs + an aluminium square + a not-bolt

2. electronics :-
1. 8 piezo transducer sensors here i get for 10rs. each ( 1 $ = 45/ rs. approx) [plastic / piezo any ]
2. 8 ic 741 op amps ( 5rs. each)
3. 40 * 40 PCB
4. 8 220k ohms resistors ( for feadback )
5. 8 4.7k presets(or pots) ( coarse) ( 2rs. each )
6. 8 470E presets ( fine ) ( 2rs. each )
8. connecting speaker wires ( 30 ft- doubled)
( 1.25 rs per feet )
9. last but not the least pc keyboard ( rs.200/- )
( or directly the IC if u get )
ALSO a female connector for the ic
i used a video game female connector the pins mismatched but i made it work randomly on the pins accessible

transistors can also be used here to amplifiy

3.software :-

as i mentioned

u need
1. flexi music orchestra
2. some professional quality wav. drum samples available widely

i attached both of them

tools :-
multimeter
solder gun + acc.
hot glue gun ( if u wish to glue the electronic joints)
super glue ( araldite , bondtite ..etc )
G- clamps
drill + 4mm drill bit
cutting saw etc.
joeyjerry1 month ago

Can anyone show me a video to do this electronic connections????

Ankan Nayak8 months ago
Is this drum set velocity sensitive i.e sounds louder when hit harder?
I think not, because keyboard respond just to connect 2 wire
Sbmsjr dvagala6 months ago
but my question is can we make this circuit without ic..........using transistor
iceng Sbmsjr6 months ago
A circuit using a transistor or two per amplifier with its attendant resistors and capacitors
is far more complex then one IC that has four individual amplifier / comparator units
in a single14 pin IC (Integrated Ciircuit)..
drmpre_ct.gif
Sbmsjr iceng6 months ago
So we can't amplify without IC ?
Is there any alternative way to make it velocity sensitive?
Sbmsjr6 months ago
Can i use piezo speaker on place of piezo transducer.......and can I connect Piezo direct to keyboard without any circuit......
wdowski2 years ago
Guys can someone add a proper schematics? I doubt it's gonna be hard for someone with tech knowledge. I don't have it. Can do the drums but need proper schematics. Thanks again.
siddiq4321 (author)  wdowski1 year ago
Hey every one....this one is a similar one....Except that u wont ness the resistors at input since our input is small...and the common grounded wire of all a ics should be to the common green pin on the keybaord ic......and the individual output of each ic will go to the individual input of keyboard ic....Please understand the basic idea...then u can easily link...best luck..:-)http://www.electronics.dit.ie/staff/tscarff/Music_technology/8way_drm2/drmpre_ct.gifReply
Hi Siddiq,
I'm having trouble mounting the plate, why not have much knowledge circuit, you could send me the board layout please?
After I mount the board you pordeira orintar me in connection with the keyboard?
I thank you for your help.

Thanks for the posts.
Hi Siddiq,
I'm having trouble mounting the plate, why not have much knowledge circuit, you could send me the board layout please?
After I mount the board you pordeira orintar me in connection with the keyboard?
I thank you for your help.

Thanks for the posts.
siddiq4321 (author)  wdowski2 years ago
Plz wait. For the new one....as i say experiment u r own way.....as i did it accidently...
For now... I can say it is a opamp as comparator...without any driving power....the feed back is 220 ohms fixed.....individual sensitivity is 470ohm trimmer i.e. Variable one....and group sensiivity is 4.7k variable...see the schematic and my completed circuit carefully....sorry
Hello Siddiq4321,
please help me
I am struggling to understand.
you could give me more instruction on how to assemble,
you have some tutorial video?
Please, I beg you
thyagolukas@yahoo.com.br
siddiq4321 (author)  Thiago Lucas1 year ago
Hey every one....this one is a similar one....
Except that u wont ness the resistors at input since our input is small...and the common grounded wire of all a ics should be to the common green pin on the keybaord ic......and the individual output of each ic will go to the individual input of keyboard ic....
Please understand the basic idea...then u can easily link...best luck..:-)
http://www.electronics.dit.ie/staff/tscarff/Music_technology/8way_drm2/drmpre_ct.gif
Hello Friend,
You got the most simplified circuit?
please help me also,
I'm having trouble understanding this.
siddiq4321 (author) 1 year ago
Hey every one....this one is a similar one....Except that u wont ness the resistors at input since our input is small...and the common grounded wire of all a ics should be to the common green pin on the keybaord ic......and the individual output of each ic will go to the individual input of keyboard ic....Please understand the basic idea...then u can easily link...best luck..:-)http://www.electronics.dit.ie/staff/tscarff/Music_technology/8way_drm2/drmpre_ct.gif
siddiq4321 (author) 1 year ago
Hey every one....this one is a similar one....Except that u wont ness the resistors at input since our input is small...and the common grounded wire of all a ics should be to the common green pin on the keybaord ic......and the individual output of each ic will go to the individual input of keyboard ic....Please understand the basic idea...then u can easily link...best luck..:-)
http://www.electronics.dit.ie/staff/tscarff/Music_technology/8way_drm2/drmpre_ct.gif
harryjone2 years ago
Thank you sir for this great instructable. I was just wondering if you could put bigger pictures of those schematics, I am new to this and can't take a step without copying it :D.
Thank you.
if you hover your mouse over the image, an I will appear in the top corner. Click this I, and it will take you to a larger image
siddiq4321 (author)  harryjone2 years ago
Well....try enlarging the image.....or open it into new window...
If not....reply with u r email id....i may mail u the pdf...:-)
mario34441 year ago
Can i also use this to connect piezos to my logitech usb gamepad controller .
dfariz2 years ago
Hi,

The other potentiometer , what is the value. I saw it like 5000 K ohm.
The one more thing, the component between the -ve and +ve line on the upper right hand side, what is it?

If instructables reduce the pic quality, can I be a member and get the high quality diagram?
dfariz2 years ago
Cannot see the diagram clearly.

Is it 470ohm or 470K ohm. 220 or 220K ohm. Can you post a clearer diagram. Thanks
siddiq4321 (author)  dfariz2 years ago
For now...its is 220 ohm and 470 ohm which we write as 220E
The pixils of the image r lowered by instructable
ficogiano2 years ago
I like it, but I don´t understand how to make the circuit 741. Can you do it again? Thanks from Argentina!
siddiq4321 (author)  ficogiano2 years ago
Yes t is very necessary. U can use trim pot / trimmers / potentiometers in place etc...
but i can use this? http://www.sourcingmap.es/smapimg/es/n/11c/1000-unidades-150v-16w-47k-ohm-axial-lleva-resistencias-pelicula-carbon-150862n.jpg
siddiq4321 (author)  ficogiano2 years ago
no ...
u can use this

http://www.digitaldandt.org/db/uploads/data_sheets_rev/Resistor_files/resistor4.jpg

or

http://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Potentiometer.jpg/225px-Potentiometer.jpg
thanks
siddiq4321 (author)  ficogiano2 years ago
http://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Potentiometer.jpg/225px-Potentiometer.jpg

or

http://www.digitaldandt.org/db/uploads/data_sheets_rev/Resistor_files/resistor4.jpg
siddiq4321 (author)  ficogiano2 years ago
See. It carefully.... Study the ic...opamp as comparator is being applied here..between terminals 2 and 3. ..or ur self thnink about a new idea...
what is 470E presets ( fine )? thanks you.
siddiq4321 (author)  ficogiano2 years ago
Its the 470 ohms trimm pot or the trimmer like the potentiometer. Any may work.
Fine is for fine sensitivity...
But is it necessary?
another question, Does the 4.7k preset has to be potentiometer necessarily? thanks
charithl2 years ago
i tryd did it bt i got some prob about making signal amp..so if u can pls upload a some video or pls mail me your pdf file.
thank you and nice job..
siddiq4321 (author)  charithl2 years ago
See the single piezo cicuit carfully. Or try u r own methods. I m not sure this would work with u.
doggyd69b2 years ago
I used a First Act electronic drum (table top set) sold at Target for about $ 80, you can use that and connect it to to the computer via USB but I for some reason was not able to get the software to recognize it.
I gutted it and basically added 1/4 female connectors (soldered each piezo to a connector) and mounted the connectors outside they can be plugged to a drum module and played with the module sounds or with VSTs.
much better sounding than the original set, but I am adding a real hi hat pedal and a DIY bass drum so it is more than 80 dlls but totally worth it if space is a concern, also particularly useful for non drummers laying down tracks on software drums. tutorial soon.

Very nice and effective way to get started, but as budget permits, upgrade components and improve the prototype. DIY drumming is a never ending pursuit of perfection.
siddiq4321 (author)  doggyd69b2 years ago
plz be more specific.....
any way do u have any other easier circuit to convert piezo signals to short the keyboard ic terminals ?......

and about the budget .......this instructable is foe those backward villagers like me living in India ....having no drum acc. and module ......
thankx
I was referring to a small table top drum set, with a USB connection, Yamaha and Roland sell those for about 100 dlls maybe in India as well, not sure how remotely located you are..
Ebay can be a good source for stuff like that on a small budget. again not sure if Ebay is available in India.
I don't know of a cheaper or easier way to convert piezo signals into midi signals without a USB enabled (musical keyboard) I guess you could use a typing keyboard but it would be a little harder to accomplish.
I know it's possible because I can play vst instruments with my laptop's keyboard, but it is not really convenient to make music, small beats perhaps but not full songs. and about the budget.... I guess you could find one of those units used (keyboard, or table top drum set) or even use one of the video game drum sets and convert it into a real drum set. Again I don't know what you have available where you live. I do however appreciate the creativity and effort shown by you and how you are willing to overlook the limitations in pursuit of your goal. keep up the good work and upgrade as you come across better ideas/parts.
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!