Another Relay Trainer V3 up and running (99% complete)
A single board computer using an electromechanical CPU
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jhallen
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Hello Everyone,
It took about 10 hours to assemble and 1 hour to clean the flux off it, but I was able to get another Beta V3 Relay Trainer up and running today. I was amazed it worked on the first power up! The only thing left to install, is to install eight 2-post terminal blocks which were back ordered…
Dont laugh at my soldering too much :-)
Last edit: Jim Bailey 2019-04-30
While I love the idea of having silkscreened keycaps, I am not that handy. However I found the P-touch TZe 6mm white on black label tape to work well. See the attached picture.
Looks good, thanks for the tip.
I recently finished assembling my board as well. I used the BOM to order parts from Mouser and DigiKey as suggested, substituting machine pin sockets (from Jameco) for the original side-wipe sockets. Aside from a brand new Jameco wall wort being DOA (fortunately I had another supply to use instead) and finding two sockets which were each only half soldered (flexing the board gave random results), it essentially ran "first time". I'm looking forward to experimenting with the serial port connection next. Well done Joe!
Congratulations on getting your relay SBC up and running. The serial port connection is a great way to interact with the system, have fun...
Congratulation on your build, these are very cool computers. Did you come up any labeling or key caps for your machine? Please consider uploading pictures as it always interesting to see other approach to componet selection, installation, and changes (like LED colors, key choices and etc).
My build it pretty much stock. I may add labels to the tops of the buttons as they are in a different layout than I expect. I did use 1/2" threaded standoffs with nylon screws to space the board off of the table, preventing the cut solder joints from scratching. I have an interesting (to me) project in mind and will post pictures once I am farther along with it...