555 Timer With a Speaker

http://cr4.globalspec.com/blogentry/9864
In this video, you learn how to build a 555 timer so that you can hear the frequency that it is emitting.

Category:

People & Blogs

Tags:

• Electronic Project
• Electronic Projects
• DIY Electronic Projects
• DIY Electronic Project
• 555 Timer
• 555 Timer Speaker
• 555 Timer Project

[logonazo]

i'm an electronic technician and there's not many women in that profession, so it's great to see you

[gonitronow]

if you exchange the speaker with a high power transistor and hook that transistor into an ignition coil and 12v power supply you can produce really really big electrical arcs.

[basimpsn]

@logonazo I second that.

[locutusofborg25]

@HUSTLEBANE pin 3 goes to the speaker

[locutusofborg25]

Hi I'm new to this but I did this project - <y schematic did not connect 7 to power, and so I could connect my pot and the resistor in 6 in series. I wound up with an infinitely high output frequency, so the notes did not cut off once they got so high. I'd never had a problem with that. Also, is it bad to connect pins directly, like a wire going straight from 4 to 8, or 2 to 6?

[HUSTLEBANE]

what about pin 3???

[marc1979Guitare]

it's good to see a woman in electronics... i hope you can help me out with my projects :) i have just subscribed :)

[hitachi088]

@madamerotten he's certainly not.

[madamerotten]

@hyperscitic92a How could someone who has an electrical engineering degree not understand how to build this simple circuit?

[ken25taylor]

great video. I believe there's something about pulsing 8hz and 432hz signals into something like that and using a bifilar pickup coil transformer to save the back emf. sorry if this is a random comment, just thinking out loud.

[hyperscitic92a]

i wish you could be more descriptive of which pins from the POT you connecting the resistors and to the 555 chip. I have been trying to run this circuit for hours now and nothing is working. I am an Electrical Engineer and I have tried to follow your instructions and schematic and nothing is working. and yes I do have ALL the correct components I just wish you would be more descriptive other than saying '...put this into ONE of the pins on the POT'. please tell me exactly which pins.

[hyperscitic92a]

could you possibly tell me where exactly you are placing the potentiometer? and also could you possible post your schematic in our description?

Thanks