ovelha.org— This is a tutorial how to create a circuit to make some bright leds blink corresponding to the music you are playing on your computer. Very explained and with many pictures.
Dec 6, 2005View in Crawl 4
Nice HowTo. Taking this further, i've lately been wanting to design a similar box which connects between an RJ-14 socket and a telephone. It'll blink when there's an incoming call. This will prove useful in my cube when i'm listening to my ipod and there's an incoming call. Anyone have any ideas where i should start?
"Ive googled P2 plug but nothing??"Read the article closer. He uses a weird terminology, but essentially he hooked that to the left audio on a stereo audio miniplug which was then presumably plugged into the speaker output line.The gist of the circut is that the analog audio output modulates the behavior of the TIP31 transistor, which feeds power to the LED lights. This is a fairly simple way to do it, and has the advantage that all the parts cost less than $1 total.
mailman0Dec 6, 2005
That was quick
werkkrewDec 6, 2005
gay
vibeDec 6, 2005
Nice HowTo. Taking this further, i've lately been wanting to design a similar box which connects between an RJ-14 socket and a telephone. It'll blink when there's an incoming call. This will prove useful in my cube when i'm listening to my ipod and there's an incoming call. Anyone have any ideas where i should start?
pasteler0Dec 6, 2005Submitter
sorry, my lame server just changed some stuff, If you're having problems on the site, just be patient, it will come back :)
soundDec 6, 2005
POTS (Plain Old Telephone Service) phones ... the kind that connect directly to the phone company in the US ... use 120v ac at 20-30 Hz ... in the old days we would just put a Neon lamp across the line. If you have a 'digital phone' at your desk, the ring is signaled by a digital code to the phone ... much harder to easily detect.See <a class="user" href="http://www.tkk.fi/Misc/Electronics/circuits/telephone_ringer.html">http://www.tkk.fi/Misc/Electronics/circuits/telephone_ringer.html</a> for some good ideas on how to detect phone ringing.
googledDec 6, 2005
Can anyone tell me where to find the materials? Ive googled P2 plug but nothing??UK sites would be better :D
pasteler0Dec 6, 2005Submitter
strange, you can go to <a class="user" href="http://pasteler0.ovelha.org/2005/12/06/howto-blinking-leds/">http://pasteler0.ovelha.org/2005/12/06/howto-blinking-leds/</a>and look this
ottoDec 6, 2005
Link dead. Coral has it though: <a class="user" href="http://www.ovelha.org.http.l2.l1.l0.nyucd.net:8090/pasteler0/2005/12/06/howto-blinking-leds/">http://www.ovelha.org.http.l2.l1.l0.nyucd.net:8090/pasteler0/2005/12/06/howto-blinking-leds/</a>
ottoDec 6, 2005
"Ive googled P2 plug but nothing??"Read the article closer. He uses a weird terminology, but essentially he hooked that to the left audio on a stereo audio miniplug which was then presumably plugged into the speaker output line.The gist of the circut is that the analog audio output modulates the behavior of the TIP31 transistor, which feeds power to the LED lights. This is a fairly simple way to do it, and has the advantage that all the parts cost less than $1 total.