4017 sequenceser imagination about what you migt use it for question ??

[solderman]

Hi all
After working with the 4017 on the Hide'seek Wha my imagination about what you migt use it for has run away with me. I'm now thinking about other possible ways to use the 4017 along the same line. In what way can you manipulate a ton or as it is a sin wave??.
I can only find tree different ways to olter a tone.

- Filter the tone spectra like the Seek Wha
- Manipulate the amplitude, or volume, as the Seek tremolo
- Alter the base frequency like a chorus.

The seek Wha alters the filtering and presents different sounds based on filtering frequencies from the spectra but the base tone is the same. An A is 440 Hz and so on.

If I've understood the 4017 it steps or sequences' the input by using "tickets" on the 13 or 14 pin as a forward feeder and let what's feed in to it out on the corresponding gate and then goes to the next gate. Like when your printer sorts your multipage document for you. In the seek wha it's the voltage that feeds the LED:s that gets trough and eventually controlling the LDR resistance. That in turne controls the filter roll of.


I'm thinking about using the same kind of setup to control the frequency produced by the XR2206CP signal generator chip. As in here.
http://www.diystompboxes.com/smfforum/index.php?topic=75499.msg615004#msg615004

The pot:s controlling the LED brightnes that controls the LDR:s resistance that in turn controls the frequency made by the XR2206 chip. This will work like a self playing organ different settings on the 8 pot:s will get different tones. I will then buffer the dry guitar signal and mix it with the signal from the "self playing organ" to get a parallel vocorder type of effect.

Q- Does this seam reasenabel as un design idee'
Q-I am not sure that a LDR/LED combo is as exact as I wold like it to be when controlling the resistance that controlls the frequency or the XR2206. Is there any other metod of transferring the " LED voltage" to resistance that draws few components (to still fit in a 1590 of cause  ) and is more accurate?
Q- Can the MoltenVoltage IC be used to control the 4017?? http://www.diystompboxes.com/smfforum/index.php?topic=75600.msg616137#msg616137

Edit:
Q-I also need something to gate the "organ" when there is no guitar tone. Othervice it will sound all the time any sugestions??

[frequencycentral]

Hooking a 4017 up to a voltage controlled multimode filter sounds very cool with guitar, and gives a different set of sounds to the Seekwah.

.......and there's this crazy idea someone had: http://www.diystompboxes.com/smfforum/index.php?topic=76106.0

[frequencycentral]

Also, have a look at the Wolf Bagger, a 4017 controlled oscillator in that think would sound insane: http://www.diystompboxes.com/smfforum/index.php?topic=74447.0

[solderman]

Also, have a look at the Wolf Bagger, a 4017 controlled oscillator in that think would sound insane: http://www.diystompboxes.com/smfforum/index.php?topic=74447.0

Cool, Thanks. This one looks promising. To invoke a LED/LDR instead of the frequency Pot. It handles the gating as well.

[Mark Hammer]

Though initially being used primarily for automated arpeggios, sequencers have a long and illustrious history in electronic music.  While they can be applied to many things, not al of those things necessarily benefit from use of a sequencer.  For example, a sequencer set up for semi-random-sounding delay shifts in a flanger can sound very nice (see the "Step" function in the Line 6 Liqui-Flange), but a sequencer applied to a Uni-vibe would be nothing spectacular, because of the subtlety of the changes.

One could use a sequencer for stepped ping-pong or automated stereo panning.  And no one seems to have used a sequencer to set the harmonic content by adjusting the drive in a distortion circuit yet.

[sean k]

After playing last night and kinda using the feedback control as looper on the echobase and having to get in there at the right time to turn it back before it gets silly I'm thinking of using a 4017 and a 4066 to set the resistances on the feedback pot. Initially I thought about a 555 controlling the 4017 but it'd be kind tricky syncing it up with the delay control but then I thought about rectifying the send signal and using that to fire the 4017 but now I've remembered that the 555 has monostable mode so the send signal, or the delay out, could be rectified and sent to a 555 in monostabel to fire a single pulse at the 4017 so each time the delay sends out a signal it's rectified and kept down to a short time pulse to fire the 4017 which cycles through a buch of resistances that build then cut the feedback control so one effectively has a looper.

Still theoretical at the moment but I'm also thinking that it might be an idea to backwards cycle another 4066 to drop out input to the delay chip so as the feedback builds to its loop end, it's cut off from the input source which bypasses the delay to the end of the 4017 cycle so that as the loop plays out the input signal can change without effecting the loop content.

[earthtonesaudio]

I've been wrestling with the idea of integrating a sequencer to mute or "solo" the different octave outputs from a 4024 divider here:
http://www.diystompboxes.com/smfforum/index.php?topic=77409.0

...But as Mr. Hammer pointed out, doing so in a musically useful way is the real challenge.

[MoltenVoltage]

Q- Can the MoltenVoltage IC be used to control the 4017?? http://www.diystompboxes.com/smfforum/index.php?topic=75600.msg616137#msg616137

We actually designed our Universal Tap Tempo Control Chip with the 4017 in mind.

Check out our app note for a very basic volume sequencer which uses MV-52 and a 4017:

http://www.moltenvoltage.com/downloads/Application_Note_1_for_MV-52_-_v1_1_-_Molten_Voltage.pdf

Please let me know if you have any questions about hooking it up.  Here is the datasheet if you don't already have it:

http://www.moltenvoltage.com/downloads/Universal_Tap_Tempo_Control_Chip_MV-52_-_Datasheet_v2.pdf

The biggest thing to remember is to place a .1uF cap as close as possible to both pins 1 and 8.