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Haha, if we were designing a 100% custom chip we might hit a few of those, even then only a few :) Good idea. Also occurred to me we could use castellated via on the edges like a lot of small radio and similar modules have.

Power is a bit of a guess right now, still deciding on codecs which are a big part of it. My guess is 300-400mA. @ 3.3V. One design alternative requires 5V and 3.3V supply... is that OK or too hard to accommodate in a pedal design? Should the module take 9V and make its own 5V/3.3V supply (adds...

We are experimenting with a "digital BBD" concept (not an entirely new idea, there are pedals out there now using digital BBD emulation). The idea here is to make a dedicated, configurable module that is a very flexible but easy to use CV controlled delay device. Digital at its core, but analog...

Woo hoo! Production modules are here! And we were able to price them at less than $1 in production quantities. We are still interested in any testing going on, or if you try them in some new devices, let us know! Thanks for all the great support here! -Mark

Huh, don't know where I got that from... I will correct that, thanks.

Thank-you gift for beta testers... If you gave us some feedback, just let us know if you're interested, and we will send you at no cost, an SSI 2130 VCO eval board. It already has the SSI2130 mounted on it, just add the additional components for a full eval system for SSI's latest generation...

The CT3101 is now available! https://cabintechglobal.com/ct3101 Only a few left from the beta tests, we won't make a full public announcement until we have production quantities in a few weeks. Pricing might change at that point depending on exactly how the costs work out. We would love to add...

Preliminary datasheet, let us know if you spot any errors or typos...

Right, because I look so good on video hahahaha!

Beta Update Thanks a ton to all the beta testers (we sent modules to more than a dozen people). I know some of you went out and bought projects to build, or finished an abandoned project just for this test, thanks for that! Here are the results that we know of so far: With these results I...

Wow thanks for taking the time to make a video! (Nice guitar noodling BTW :cool: ). I don't think changing the clock would affect bias, so that should all be good. I took the audio track and loaded it into a DAW so I could quickly A/B compare the MN3101 sound with the CT3101. With some good...

Possibly, but I would not want to make a module that requires soldering resistors to work, it should just be a no-fuss drop-in replacement for the MN3101. The bigger issue though is that for 320X series chips Vdd (pin 1) is a positive voltage with respect Vss (pin 3). That is the opposite of the...

That is awesome! Thanks for all the great debugging work! Whew. Glad that is sorted, was a bit worried by this one since we did not explicitly test that configuration. I guess that's what 'beta' is for :).

Looks like the SMT format of the J201 will be around for a long while. DigiKey has 22,000 in stock, Mouser has 150,000+ on order. Does not seem like a component going out of production. For through-hole use there are plenty of J201-on-SMT adapters around for less than $1.50. You can have one...

It would be great if we could swap pins 6 and7 on IC4 to verify the CT3101 works properly there. I cannot think of a way to do that on the PCB without destructive PCB changes (e.g. cut traces). If you are game and handy with a soldering iron, you could build an adapter from 2 bits of header...

Both the MN3101 and CD4047 are CMOS devices which in general have rather undefined behavior with unconnected gate inputs. There must be some detail of the MN3101 output gate circuit that allows it to be driven backwards from the output pin and thus drive the next inverter inside the chip...

PS. A quick google for AD-900 schematics turned up this one which someone manually traced the circuit to produce, and it shows the slave MN3101 is driven from pin 7, not pin 6. This is what I would expect. And I think I know why the CT1301 does not operate correctly in this configuration.

Wow, thanks for the excellent testing and debugging! That circuit design is interesting. It seems that both clock chips will put out the same frequency -- IC4 does not oscillate, but is driven by the oscillation of IC5 so both clocks run at the same speed. So I wonder why there are two clock...

Hi all, we have developed a simple drop-in replacement for the MN3101 BBD clock chip for use with MN300X series BBDs. The CT3101 is a small PCB with the same DIL-8 footprint and same pinout as the MN3101. It is based on the CD4047 and includes the Vgg (14/15 Vdd) output voltage, and supports...

We have a customer looking for someone to help them with an FV-1 design including programmable effects and integration with a display. If you have experience with this and are interested, contact us (PM us here, or send us an email) and we will put you in touch with them. (Disclaimer: We have no...