Let's Make Robots!

speaker

A few questions google has not answered

Hello everyone,

 

This is my first time building a simple robot. I am going to follow the "Start here" bot instructions, but I ordered a few extras to add in. I ordered a few leds and am trying to find a small speaker to use.

My questions:

1. What speaker can I use that will be compatitible with the start here project? (picaxe 28)

2. How do I wire said speaker to the picaxe properly? (I want to just play simple beeps and boops to start off with)

Provides better performance than normal drivers
I am participating in Google Science Fair 2013. So, I thought of sharing my idea. A simple idea. I have modified loudspeaker drivers in two ways. The benefit of … Read more

Solenoid as a speaker??

Today it is very hot here .. too hot to make robots or what else to do. so I was just brainstorming about my drum robot .. :)

Complete Newbie - College Project - audio question

Hello all,

I am completely new to robots and it seems like it's gonna be a lot of fun.  I am in a college class right now with a project of designing a robot.  Here is what I know:  We are using parallax microcontroller (I think... Board of Education Rev C), and I have gotten familar with the basic terminollogy.  My team plans on making a simple bot like the start here version, except bigger, with tracks, a nice cover, and some lights.  However, we really want to incorporate some audio clips and music...

which speaker (amplifier) for a "mobile-like" output of rttl (midi) sounds?

 

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I am working on a simple PICAXE (4.5 Volt) project that plays 

a (downloaded ringtone) rtttl sound file

 

Emits bright light and loud noises =D
Around the end of February every year there's a 'Chinese Lantern Festival' that happens in my city. Lots of junk to buy, cool lanterns, interesting food, and most … Read more

let my robot be heard

Hi can anyone help on this....

I am trying to make some noises for my robot (in progress) via a picaxe 28x2 sound commands. I first bought a small piezo but it was way to quiet so i bought a bigger one, about 60mm D which i thought the sound would have been louder but it isn’t.

can i still add a laser, speaker, led?

in my robot SC-QR-1 i have allready used all 8 servo-ports.

but can i still ad a laser(to see where it looks), a speaker(for it to call hor help or showing some sound-emotions..   etc.) and some leds(like a red to show power, white/bright to help my "primary-back-mounted-not-night-vision-spy-camera") 

and if yes would the servos disturb the lasers, speaker and leds?

and i was also thinking, stuff like the sharp ir sensors have ir leds in them, could i attach an led or laser to those pins??

 

please reply!! :D

Speaker Noise

Greetings fellows,

Still plugging away on my big project. All goes well, except my 8ohm speaker is giving off a trememdous amount of noise while it's on. It works fine, but there is always a high-pitched "white" noise.

In addition, my project uses small servos, and i've noticed a "click" sound come out of the speaker whenever I turn the servo off (low 1). I assume the problems are related.

Is there too much power going to the speaker? Do I need some sort of voltage regulation or supressive diodes or who knows what?

Boosting Speakers with the Lm386

Hey All,

So I'm integrating the SpeakJet into my next project, and using the LM386 to try to boost the speakers. Unfortunately, the package didn't include any circuit (or information whatsoever, really) and Radio Shack has discontinued their databooks. So I went to the go-to info tool, THE GOOGLE! I've seen this circuit all over the place:

lm386_0.gif

A few questions about this circuit:

1. Is the .05uf cap and 10 resistor recessary if it's just going to ground?

Boosting speakers

Once again, I beseech the robot gods for some info ...

Speakers: How can I boost the sound/tune command from a picaxe to a speaker?

I've got a small 8ohm speaker that I've used in the past, and it works great (as long as the motors aren't droping the voltage) but  I want to boost my output. I've also got a much bigger 1 watt speaker I want to use. How would I boost it?

Run away robot

I don't have a enough skill to do it, yet, but it would be cool for one of you to make a robot that runs away and hides.  I was thinking you could make it go to the darkest part of the room and wait until it hears sound coming to it (with several mics pointing in each direction) and run away from it.  Or just one that hears and runs away.
plays his drum, provides his own soundtrack, simple object avoidance
Using a
Update: After getting a little attention for this bot, i decided to teach him a new tune. His objectivism avoidance still needs some work, but that's really the … Read more
On Picaxe: sound 1, (110,3) is NOT a good idea, you should allways write sound 1, (110,3) low 1 (you do not need line breaks, just write it as above)   Being used … Read more