David N8DAH has been working on a few projects. The first of these is a CW Zero Beat
If anybody is interested in a CW Zero Beat addition to their µBITx, then he has nine in kit form and one built for testing available. The kits are US$13 shipped inside the US. Add actual shipping costs outside Continental USA. He can build them for you for $2 extra or only solder the surface mount and allow you to build your own.
Kees K5BCQs has 403 paid orders for AGC and/or Anti-pop Mini-Kits and 399 of these have been shipped. He has additional boards and parts and will continue to supply these Mini-Kits as long as there is demand. Details are in the “Files” section of the BITX20 webpage under his call K5BCQ.
Kees was somewhat surprised to be able to process such a quantity over a short period of time. That indicates there are opportunities for others to join in with their ideas. As Kees notes, the uBITX is a great vehicle for modifying and improving.
Mike, WA6ISP has a small PCB that will add 16 more I/O Lines. It runs on the I2C lines, along with 5V and earth. It is 1.750″ x 1.100″ and has 3 address lines, so you can run a several of them and they won’t interfere with the SI5351 (which also uses i2C lines). The chip uses the Adafruit Library for Microchip I2C Expander. Mike has a few built up versions and a few bare PCBs. Email him if interested using his BITX20 list email address.