This kit is so amazingly flexible and extensible. As a historical and retro computing educational resource I can not recommend it highly enough.

Easy to construct, easy to understand, and designed for the tinkerer, a fantastic tool for the compsci enthusiast.

Documentation is a bit minimal but follow the photo and your be just fine. I recommend using jumpers for the out/in ports to be more flexible. There is a small basic example to get you started and with a bit of ingenuity the board can be used for a number of software and hardware management purposes.

The kit arrived quickly, good quality PCB and components and easy to build. I had an old 20 GB 2.5" laptop disk and ordered a 44 pin ribbon cable on Amazon (pity it's not offered as an option). I have to say that the documentation is quite limited, just a schematic and photograph, but there's very little room for error as it's quite a simple build. You will probably need to do a bit of research when it comes to preparing the disk for use under CP/M, a few notes on this might be helpful. Clue - look at the documentation for fdisk80.com. But this is a hobby and working it out is part of the fun. If you are in the market for a disk interface for your RC2014, I would recommend this.

So I bought the RC2014 Pro, with extra I/O boards and the Raspberry Pi interface, Spencer gave me a refund since initially I did not order the kit correct. Started soldering and once completed put the power on. Hmmmmm, not working. I found out that you have to connect PORT A to the FTDI cable, I consistently used PORT B. Changed PORT and the computer booted. Started BASIC, but could not get a running light to work. After some more troubleshooting and mails back and foreward to Spencer I found out that the direct boot into BASIC version 32 or 57 starts up a BASIC version which contains a bug on the FOR loop. So this BASIC version isn't of much use. Note this only applies to the RC2014 Pro. The RC2014 Pro however has more options. So I changed to booting into CP/M, hmmmmm, not working. After some more debugging I found a soldering error. You really need to take care how to assemble the 64k RAM module. Corrected the error, bingo. Started CP/M but this does not contain a BASIC interrupter in the ROM. Spencer advised change to SCM, small computer monitor. Changed some jumpers, worked. From there you can start a BASIC version without the error. You can also boot into CP/M. Next I tried to make a small assemby program in asm80.com. Copied the HEX file into SCM, worked. So finally I was heading in the right direction. The components supplied are of good quality. The PCB's are outstanding and the kit itself was complete and I did not miss a single component. I see three improvement points. First a minor one, mounting the resistors is a bit tight. Second on the 64K RAM module the white box near the link mark should, in my opinion, be removed. I was thinking you have to mount there a header. You don't, the double row pins need to be soldered there, leaving one open pin. Last improvement is on documentation could be better organised, everything is there but it's a bit of a search. So I would advise anyone purchasing the kit, first read all documentation it really helps. And as general advice, don't just put power on the board after having completed the soldering work. You need to check, the build is not a fail-safe design. You also cannot expect this for a hobby project. Lot's of text has to be followed by an overall number, I would rate this kit as 8 out of 10. Fun factor a 10.

Yet another excellent turnaround response to my order for a couple of these prototyping boards. I'm going to use one for a simple Power-on-Reset, with a delay of about 1.5 seconds, having found that I have to manually reset my RC2014 when using the Pi Zero Terminal to overcome what seems to be a sequence/race condition issue. It seems the PI wins, hands-down, on power-up and consequently reports that it's waiting for serial comms between the RC2014 configuration and the PI to commence so I'm confident that my PoR idea will hold the RC2014 a little then Reset - the PI, which will be waiting, should then see the serial comms.