This is the main board for my MiniDiv clock divider based on the CD4040 binary counter IC. Make sure to also print the front panel!

DISCLAIMER: I've found a clearance issue with the LEDs under the sockets.

After some investigation and testing, I noticed that the jacks would hit the LED when plugged in. The module still works, but this might cause problems down the road. I'll do another version with a fix if you want a more reliable build.

Important Assembly Notes

Choosing the `PCB+Assembly` will only PARTIALLY populate the board. It will populate all of the SMD components and only some of the through hole parts that are known to be easily purchased by PCBWay.

The rest can be purchased elsewhere:

• PJ-3001F/Thonkiconn Jacks (12pcs) - https://www.taydaelectronics.com/pj-3001f-3-5-mm-mono-phone-jack.html
• B100k Potentiometer with Indicator (1pc) - https://www.taydaelectronics.com/100k-ohm-linear-taper-potentiometer-round-knurled-plastic-shaft-pcb-9mm.html
• Button_KFC7x7, Momentary (1pc) - https://www.taydaelectronics.com/push-button-switch-momentary-dc-30v-0-1a-dpdt-7x7mm.html
• 3mm LEDs (10pcs)

More info about this build on my website: https://benjiaomodular.com/post/2024-11-22-minidiv-pcb/