Hello everyone, hope your all having a great day. So I'm doing a science project and k need to make a electric quiz board( of you don't know it's easier to just google it). So I have to add a led which is mandatory. But you can get bonus marks if you add extra stuff like buzzers etc. I added a active buzzer and it worked fine. And then I tried the passive buzzer but it's hard to work with because the led stays on all the time or follows the buzzers pattern or only the buzzer works and not the led. Can you guys help me wire it? Thanks in advance.
. Can you guys help me wire it?
Well we need to see how you have wired it already then we can tell you where you went wrong with your homework. Otherwise just giving you the wiring is like cheating on your homework by doing it for you.
So post a schematic and post your code because it is more likely that your code is the problem.
Linkuru: just google it
You have some fundamental misunderstanding of how Google works. My Google is not your Google. It knows where I am and what I have searched in the past. There are different advertisers who want to sell me different things to what they want to sell to you. It will give me different results. Please just tell us what it is or give a direct link to a page with a simple photo or explanation. Wikipedia is good for that.
Without a schematic of what you have wired, it is impossible to help. And there is a problem with the code you didn't post. (I didn't post the description of the problem.)
#include "pitches.h"
// notes in the melody:
int melody[] = {
NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
};
// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations[] = {
4, 8, 8, 4, 4, 4, 4, 4
};
void setup() {
// iterate over the notes of the melody:
pinMode(8, OUTPUT);
pinMode(7, OUTPUT);
digitalWrite(7, HIGH);
}
void loop() {
for (int thisNote = 0; thisNote < 8; thisNote++) {
// to calculate the note duration, take one second divided by the note type.
//e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
int noteDuration = 1000 / noteDurations[thisNote];
tone(8, melody[thisNote], noteDuration);
// to distinguish the notes, set a minimum time between them.
// the note's duration + 30% seems to work well:
int pauseBetweenNotes = noteDuration * 1.30;
delay(pauseBetweenNotes);
// stop the tone playing:
noTone(8);
}
}
the code is this one
and the pitches.h code is
/*************************************************
* Public Constants
*************************************************/
#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_DS8 4978
Please edit your post and use </> code tags.
Most people that use the forum try to respect the guidelines that will get better answers.
Sorry about that I didn't know that's what your supposed to do.
MorganS:
Without a schematic of what you have wired, it is impossible to help.
I’ve used that example code in the past. If you followed the instructions, it’s pretty hard to get wrong. The example is intended to drive a simple speaker from the chosen output pin (possibly amplified through a transistor).
It won’t work with most ‘buzzers’ as they require a different drive method - and often generate the tone within the buzzer.
You may be able to find an instructable (urgh!) that uses a similar method - which will help you get the basics working.
All that sketch does, is shake the output pin at various frequencies (with the tone() ) function. The speaker turns those voltage changes into sound you can hear,
What do you mean instructables?
Back to Google again.
Linkuru: What do you mean instructables?
Instructable is a crap web site where idiots post stuff. However if you know more than the idiots you might pick up some good ideas but never try to learn fundamental stuff from it.
Oh ok. But regarding the schematic can I give you a picture?
Post #7 tells you everything you need. If you can’t get past that, i’m sorry but you need to go back a few steps, and practice with the very basics, blinking LED etc...
Instructables certainly isn’t the font of all knowledge, but if you know nothing, it can help you gain some understanding of simple concepts - then run away from it as fast as you can!
Can you explain why the circuit works with a normal buzzer but when I add a passive buzzer the led is dimmer and follows the tone of the buzzer? Is it because their is not enough power?
Ok so it's done and it worked. I didn't change the code either. So basically I added a nte2321. And that solves the problem. And now the light bulb will stay on solid and the buzzer will follow the code.
Yay! Good perseverance - I hope you learned a lot.
Cheers! Sorry for being terse, but you did it yourself!