how do I add a blinking led to a phase 45 or similar?

[jimmybjj]

can someone point me to a link or tell me how to add a flashing led speed indicator to the phase 45 or similar effect? thanks

[MikeH]

For the P45; not sure what schem you're using, but using the tonepad schem, IC2a is at the far right.  I've seen this mod done by connecting a 24k resistor to that pin, and connect the other end to an LED cathode, with the annode connected to ground.  Try that and see if it works.

[frequencycentral]

http://www.lynx.bc.ca/~jc/phase45modded.gif

[MikeH]

Yeah, or that.   

Rick, I've been looking at your Causality phaser - have you tried implementing a rate LED on that?

[Renegadrian]

Great nice easy addition to the P45!!! I did it on mine...I like it!

[frequencycentral]

Rick, I've been looking at your Causality phaser - have you tried implementing a rate LED on that?

I'm not a fan of blinking rate LEDs - scared of causing ticking as the LED draws it's current. Though there is a waxing/waning dual LED mod for Causality if you search the thread - didn't do it to mine though!

[DougH]

The way I did it on my Phase 90 was to connect a 6.8k to the LED from the speed pot. Works fine.

[MikeH]

Rick, I've been looking at your Causality phaser - have you tried implementing a rate LED on that?

I'm not a fan of blinking rate LEDs - scared of causing ticking as the LED draws it's current. Though there is a waxing/waning dual LED mod for Causality if you search the thread - didn't do it to mine though!

I'm only on page 5 or so... I'm sure I'll come across it.

[doc_drop]

I did the 2 LED thing on my Causality MKII. I LOVE it almost as much as the whole circuit. It is not only useful, but fun to watch!

I don't get any associated ticking, FYI.

[jimmybjj]

I did the mod as shown in the link. I like it. I've noticed on some "blinking" effects the blink fades in and fades out, how is this accomplished? Is there a practical way of doing this with the 45?

like this http://www.youtube.com/watch?v=-7ZCtIuH1tk

[strassercaster]

Just for the next guy I noticed it ooks to be a 2,4k not a 24 k as stated above this could mess a guy up ha ha