deskthority

Hi, 1) I can't help you that much on prices. I had a few that were somewhat dirty that I sold for about $50 not including shipping. I am not sure what any others have sold for, but I imagine a clean example would go for quite a bit more. 2) I am this Ben person so I can help you with the converter s...

I see, it did have quite a few issues. It is unfortunate that recyclers often cut the cables on keyboards. Btw, I noticed the one "bodge" wire. There always seems to be one on the first go

Neat custom pcb. Unusual layout for sure. What was wrong with the Tandon? I'm sure it could have been fixed. They are pretty uncommon

Apologies for the lack of updates. May was unexpectedly busy. I am still moving forward on this when time allows. I will be building the new pcb revision this weekend and have made the majority of the code updates that will be required. Hopefully I will have a working demonstrator soon.

forter4 wrote: ↑

07 May 2020, 03:50

https://www.ebay.com/itm/233580199070

Looks like a keypunch keyboard

I have one of these, its Cortron saturated core switches.

You can use a mild abrasive like fine sand paper or steel wool. It may scuff up the soldermask a bit but won't damage if you don't over do it. You can also try a bit of vinegar and salt solution on swabs to carefully clean just the copper parts. You will then then to wipe with alcohol to remove any ...

Sad news. That is far too young.

When it passed through my hands, I took a peek and if I remember correctly, this used a simple serial protocol that sent ASCII character codes. This was pretty common for basic "dumb" terminals as which relayed ASCII data from the keyboard to the host and displayed ASCII data received from the host.

I like the look of this quite a bit. It has a nice shape, especially the sloped portion that fits under the front of the terminal. Hope you get it working

I feel like the offset display would bug me, although with a color matched piece of plastic or the like, that could be severely reduced. The extra resolution of the no mod I feel like wouldn't come in as useful since it appears there no PC interface? Static logo/time/calculator I would assume would...

Time for a long overdue update. Take a look and please share any questions, concerns or feedback you have. "No mod" display I received the display that is a candidate for use with out modification of the case. The good news is that with a bit of light sanding, the display does fit in the existing op...

A quick status update: From the responses, I plan to move forward without offline availability to simplify both design and installation. I have located a display that I think may work without modifying the case and have ordered a few samples. I will update this thread after they arrive and I test th...

What the heck is that? Hard to tell depth from photo but appears quite low profile, yes?

Background Some time ago, I developed a replacement for the stock, failure prone calculator module in the Focus FK-9000. This project was essentially a "two" off that I made for myself and Chyros. You can see the module on Chyros' youtube channel in his "Project F" at around the 10:30 mark . In the...

Nice work on the research! I really wish more of these would turn up in the real world. I imagine the total number made was low and the due to their research/lab usage they didn't end up in the normal computer recycling pipeline when retired

Not sure I follow. What do you mean by "US English" layout being supported by ASCII? ASCII predates pretty much any keyboard layout.

Those are quite nice. I think it is actually an HTX-10, H for Heath. Same as the Zenith ZTX-10, Z for Zenith. They are neat little terminals.

These look nice and compact. Good job on the case. Good luck!

There was a specific model called the "I/O Selectric 731" that was produces with all the electronics and hardware to interface for both input and output, hence the I/O tag. There are few pics here: https://www.vaxbarn.com/index.php/other-bits/362-ibm-731. Some of this was used in the later Selectric...

I'd be in for one as well

Nice job. This is one of the better looking cut jobs I have seen.

That is really clean example! Nice find, snacks!

Great work and excellent write up! Who would of thought you could find the controller chips for sale.

Nice. That space invaders board looks essentially new. I bet those feel nice.

Hypersphere's instructions are excellent. I will add that I find having some foam swabs in addition to cotton ones is useful as they come in several sizes and don't leave fibers on sharp edges. I find these small ones are useful to get in the narrow areas and crevices. https://www.amazon.com/Semi-Fl...

Who knows what treasures are hidden in the heap. Good luck!

Really nice. I love seeing rare space invaders boards. Holy card fish look at those feet!!

Some of the teensy boards have a microcontroller with a small amount of eeprom (1K), which is persistent, but no other persistent memory. More could be added by connecting an external eeprom or disk storage such as an SD card.

What caps do you need? I have some extra space invader caps, as long as they aren't specific to that board I may be able to help.

Fingers crossed.