This kit has revolutionized my use of RC2014 hardware: it can do so much. Essential for really getting the most from your retrocomputing hardware, and very flexible: at the moment, mine is connected to a standalone Forth-based computer, and I can use it to load and save the entire contents of RAM to SD Card, as well as running debugging sessions. It also replaces dedicate ROM boards, clocks and even a serial card. Get one.
Works fine. Bright display. No flicker. Easy to program. One assembly hint: to help get all the LEDs at the same height - solder LEDs in each of the 4 corners first at the exact height desired. Thus you have a reference for filling in the square.
The z80ctrl is a system controller that enables running different 8-bit systems. I am pleased with this module, but I have to warn potential buyers that this product is not for beginners. I have successfully assembled and running the module, but it is a bit too complicated for me. The product is well documented but aimed more toward experienced users.
This card adds a lot of flexibility to the RC2014 system and can save you buying a clock card, a card for storage, and a serial interface card--all while given you more power than those cards alone would offer. Great support on the forum and a path to some interesting upgrades over time.
Fast shipping and as described. Only hint I would offer is insert the left sound chip first. One of the pins broke on one of mine (an issue with the IC and me, not the kit), but left is used for mono output which is most likely to be used anyway. I had a spare and am in business.