
Formant vco
vk2seb/formant_vco_prototype
KiCAD EDA files for an analog voltage-controlled oscillator compatible with modular Eurorack synthesizers.

The CD4093 is a logic Gate made by Slkor in a SOP-14 package with 14 pins.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CD4030S, from EasyEDA) and its footprint (Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, from KiCad's library), ready for a KiCad board. 2,272 are in stock at JLCPCB (part C3041280). 11 open-source boards in 7 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | A | Unspecified |
| 2 | B | Unspecified |
| 3 | J | Unspecified |
| 4 | K | Unspecified |
| 5 | C | Unspecified |
| 6 | D | Unspecified |
| 7 | VSS | Unspecified |
| 8 | E | Unspecified |
| 9 | F | Unspecified |
| 10 | L | Unspecified |
| 11 | M | Unspecified |
| 12 | G | Unspecified |
| 13 | H | Unspecified |
| 14 | VDD | Unspecified |

vk2seb/formant_vco_prototype
KiCAD EDA files for an analog voltage-controlled oscillator compatible with modular Eurorack synthesizers.

alfieRopson/Emerging-Tech
Collection of files and stuff for my emerging tech brief



maheen-ahmed1/OptoTACH
Precision non-contact optical tachometer (0–9999 RPM/RPS) built entirely with discrete CMOS logic & 555 timers; no microcontroller, no firmware. Includes KiCad EDA, 3D model, Python simulation, and bench validation.

RivenHexagon/EtherwaveGateCV
Gate and CV extension for Moog Etherwave Theremin

vk2seb/formant_vco_prototype
KiCAD EDA files for an analog voltage-controlled oscillator compatible with modular Eurorack synthesizers.

<iframe src="https://pcbkit.io/embed/parts/slkor/CD4093" title="CD4093 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/slkor/CD4093.jpg" alt="CD4093" width="1200" height="900">[](https://pcbkit.io/parts/slkor/CD4093)Yes. The symbol is EasyEDA_Cloud:CD4030S and the footprint Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOP-14, with 14 pins. Its footprint is drawn on this page.
Slkor publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C3041280, with 2,272 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the CD4093BM96 by Texas Instruments, the CD4078BM96 by Texas Instruments, the SN74LS21D by Texas Instruments and the CD4030BM96 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
11 boards in 7 repositories on GitHub; the most starred are listed on this page, with their KiCad files.