Another Way to annoy your Neighbors

[Lolucoca]

So, my Neighbor just called me an annoying person. Instead of arguing with him, I thought "F*** You. I can do better than that. After half an hour of soldering it was done. It's nothing special, just a few components, a 250k potentiometer, a pretty loud speaker I had salvaged from a 1960s portable TV (which is connected over those connectors on the picture), a 9V battery and an NE555P timer IC. When everything is connected, this thing generates a square wave signal with a frequency of 3+ kHz that can be adjusted with this potentiometer. I had to use a BD139 power NPN transistor to handle the power of the speaker (otherwise I could only connect really tiny speakers). This thing is annoying af. Even with closed windows, you can hear this high frequency sound. I thought about powering it over USB and adding a tiny piezo buzzer to it, but I would have to use a boost converter to provide enough power to the speaker, so I scrapped that idea. I had quite a bit of satisfaction when I placed this inside of his car while he wasn't looking

[JefferyD90]

3 minutes ago, Lolucoca said:

So, my Neighbor just called me an annoying person. Instead of arguing with him, I thought "F*** You. I can do better than that. After half an hour of soldering it was done. It's nothing special, just a few components, a 250k potentiometer, a pretty loud speaker I had salvaged from a 1960s portable TV (which is connected over those connectors on the picture), a 9V battery and an NE555P timer IC. When everything is connected, this thing generates a square wave signal with a frequency of 3+ kHz that can be adjusted with this potentiometer. I had to use a BD139 power NPN transistor to handle the power of the speaker (otherwise I could only connect really tiny speakers). This thing is annoying af. Even with closed windows, you can hear this high frequency sound. I thought about powering it over USB and adding a tiny piezo buzzer to it, but I would have to use a boost converter to provide enough power to the speaker, so I scrapped that idea. I had quite a bit of satisfaction when I placed this inside of his car while he wasn't looking

Not going to lie, this is about the crudest thing I have ever seen.  But it is the best thing I have ever seen.  Eventually, one day, people are going to learn to quit being assholes.

[Lolucoca]

@JefferyD90 I know I could've done much better, but it fits my purpose quite well  

[Marine_Boy]

Hahaha... this is cruel man  But I believe he deserved it   

[iamdarkyoshi]

I just power up my dust collector

 

It sounds like a damn air raid siren

[Lordmac14]

On 10 May 2016 at 4:50 PM, Lolucoca said:

So, my Neighbor just called me an annoying person. Instead of arguing with him, I thought "F*** You. I can do better than that. After half an hour of soldering it was done. It's nothing special, just a few components, a 250k potentiometer, a pretty loud speaker I had salvaged from a 1960s portable TV (which is connected over those connectors on the picture), a 9V battery and an NE555P timer IC. When everything is connected, this thing generates a square wave signal with a frequency of 3+ kHz that can be adjusted with this potentiometer. I had to use a BD139 power NPN transistor to handle the power of the speaker (otherwise I could only connect really tiny speakers). This thing is annoying af. Even with closed windows, you can hear this high frequency sound. I thought about powering it over USB and adding a tiny piezo buzzer to it, but I would have to use a boost converter to provide enough power to the speaker, so I scrapped that idea. I had quite a bit of satisfaction when I placed this inside of his car while he wasn't looking

 Nice work I'm inspired now 

[You_are_a_cunt]

I am so making this to annoy my flatmate when he decides to sleep all day

 

This also reminds me of this:

 

(gief schematic!)

[Omon_Ra]

In my high school electronics class we ordered those electronics kits to build. One of the ones I got was similar to what you built, but it had a light sensor so when exposed to light, it was silent; but when it was dark, the thing would start beeping. Perfect addition for your speaker of doom.

[Lolucoca]

Added a headphone jack. Had to use six 220 ohm resistors to provide 2.15V to the headphone jack itself. I had to use six resistors because one resistor couldn't handle the current flowing if you connect headphones (if you ever wanted to do so). Also, I had time to measure the current this thing is drawing with a speaker attached. It's about 51.6 milliamps, around 450 milliwatts at 9V. Attached this thing to my neighbors car stereo. I'm currently thinking about powering this thing from the OBD port of his car. 

[Huntsman]

Instead of having it beep all the time.. some intelligence to have it beep at random intervals would be more frustrating

[.spider.]

On 12.5.2016 at 9:57 AM, Lolucoca said:

 Attached this thing to my neighbors car stereo.

How is it possible without breaking into his car?

[Lolucoca]

@.spider. Basically, his car doesn't have any windows

[Lolucoca]

@.spider. Basically, his car doesn't have any windows

[Jykos]

Funny... illegal... but funny

I'd probably stop at leaving something in a bush not his car.