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[Group Buy-19][O] TMS0803/5 Emulating Calculator With Bubble Display

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It would be nice to see it 3d printed. Some of our libraries here has 3d printers that I may be able to access (after a certified course). Do you know of any open-source Linux S/W that I can try?

 

I use OpenSCAD on Windows and Linux.  Has a programming interface but a terrible editing window.  I use an external editor (Notepad++) on Windows; I use the built in editor on Linux.

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Now that looks nice!

 

I wonder if @@Fred could laser cut that?

 

Could anyone else 3D print the keys?

 

I believe the keys are cut from flat sheet using a laser cutter as well. The instructions mention building each key from two pieces of plastic and sticking together with double sided tape, page 10 of the linked PDF. 3D printing might be a better approach though.

 

http://www.spikenzielabs.com/Downloadables/calc/CalcBuildInstructions.pdf

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@@2lostkiwis @@zeke

 

That reminds me of sick-of-beige.

 

The acrylic won't fit the retro theme for this project though.

 

The original DataMath is actually a beige soapbox design.

 

I do prefer the slim look of the Sinclair. I don't think we need to protect the front as this is really a show piece that asks to be touched. A slide-in shell can protect the back (i.e. protect your hand from the back) and also serve for storage when reversed.

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Ok.. all.. I'm back.

Final call for the group buy. Closes 12:00 pm 7th July @11:00PM EST.

 

bluehash---------------1---------US
cubeberg---------------2---------US
GeekDoc----------------2---------US
Greeeg-----------------1---------AUS

Swampdonkeykami--------2---------CA

SergioDeNice-----------1---------FR

2lostkiwis-------------2---------NZ

distefanom-------------1---------ITA

angelgrig--------------1---------GR

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@@bluehash

 

You may want to avoid DX on this one. After a 6 weeks' wait. My tactile buttons comes to me wrong. They (or whoever supplies them / drop shipment?) just filled the order w/ SMD parts instead of thru-hole.

 

May be if you can match them from newark or other US suppliers even better to guarantee quality.

 

I could as well order (which I did last week) from ebay and get them in 2 weeks. The 1st batch (100s) I got from DX are good quality, I guess they ran out and just try to make me put up with whatever they had.

 

I had filed a ticket w/ them, I've been getting stuff from them for more than 5 years. Hope they will do the decent thing and acknowledge / fix the wrongs.

 

 

post-23-0-23505500-1404771432_thumb.jpg

 

Should have put this in the "mailbag" thread titled "Wrong item received".

 

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Update. It turns out I can use still use the smd buttons and there is a bonus.

 

I use pliers to clamp down the horizontal contacts and turn them into very short pins. When placing them on the PCB they are kind of wooby wooby as "pins" did not penetrate to the underside. And I solder on the top.

 

And the bonus is that the backside is no longer poke-y.

 

@@swampdonkeykami if you can accept the smd buttons and want your kits quicker, please response and PM your address to me. The differences will be a slight difference on the PCB (bypass cap position and some back-side silkscreen text).

 

I can only assemble the 2 kits for Swampdonkeykami as he's in Canada. Shipping elsewhere would be too expensive. And I only have parts for another 3 kits.

 

Here is the new one I just did for a friend. They had the smd buttons but still be able to line them up (buttons) nicely. This one actually is the best build by far.

 

post-23-0-34324000-1404872227_thumb.jpg

 

I am also documenting some assembly tricks on to the build thread that will help you avoid some mistakes I made on the initial builds.

 

Will put link here when done.

/EDIT this links to assembling tips for the project (in build thread)

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Count me in as well - if the price is right ;)

 

bluehash---------------1---------US
cubeberg---------------2---------US
GeekDoc----------------2---------US
Greeeg-----------------1---------AUS

Swampdonkeykami--------2---------CA

SergioDeNice-----------1---------FR

2lostkiwis-------------2---------NZ

distefanom-------------1---------ITA

jensma-----------------1---------GER

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Please add me too. (jensma , I added angelgrig back into the list it looks like they were dropped off your list)

 

bluehash---------------1---------US
cubeberg---------------2---------US
GeekDoc----------------2---------US
Greeeg-----------------1---------AUS

Swampdonkeykami--------2---------CA

SergioDeNice-----------1---------FR

2lostkiwis-------------2---------NZ

distefanom-------------1---------ITA

angelgrig--------------1---------GR

jensma-----------------1---------GER

clyvb------------------2---------US

 

 

 

 

Count me in as well - if the price is right ;)

 

bluehash---------------1---------US
cubeberg---------------2---------US
GeekDoc----------------2---------US
Greeeg-----------------1---------AUS

Swampdonkeykami--------2---------CA

SergioDeNice-----------1---------FR

2lostkiwis-------------2---------NZ

distefanom-------------1---------ITA

jensma-----------------1---------GER

 

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Awesome ... worked on the sim for this with Ken and Ed

He's linked it to the group so you'll probably get a few more visitors :-P

 

So yes please and please send me PayPal details for cost of two kits plus shipping to UK

 

Many thanks :D

 

bluehash---------------1---------US
cubeberg---------------2---------US
GeekDoc----------------2---------US
Greeeg-----------------1---------AUS

Swampdonkeykami--------2---------CA

SergioDeNice-----------1---------FR

2lostkiwis-------------2---------NZ

distefanom-------------1---------ITA

angelgrig--------------1---------GR

jensma-----------------1---------GER

clyvb------------------2---------US

philm------------------2---------UK

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Just a thought ... I also did the images and manual for the sim

 

How easy / doable would it be for any of the above who can do 3D modelling and laser / 3D prototyping to match the pcb to a realistic original style case for the Scientific and/or the Enterprise?

Some old files here:

http://phils.bitboxes.co.uk/calculators/dev/
 

I've got lots more files / better for measurement, etc. please message me :)

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@@PhilM

 

Hello Phis,

 

Thanks for great resource. Looks like we are adding a 3rd rom (Sinclair Cambridge) to the build thanks to Ken Sherriff.

 

I am really surprise to see the actual Sinclair did not compense the brightness of less segmented digits (say '1'). I guess that was the limitation on the H/W. May be the msp430 implementation should be changed to observe that.

 

I don't have 3D printing resources. The PCB is 50mm x 85mm, i.e. same width, but shorter. I guess one can lengthen the PCB if desired.

 

I know The Sinclair was offered as a kit, so one can design a new PCB that fits and replaces the old one. May be cheaper to do than creating all the plastic parts.

 

/EDIT also thanks for your work on the original simulators, Ken Sherriff mentions your contribution on his page.

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@@PhilM

 

Hello Phis,

 

Thanks for great resource. Looks like we are adding a 3rd rom (Sinclair Cambridge) to the build thanks to Ken Sherriff.

 

I am really surprise to see the actual Sinclair did not compense the brightness of less segmented digits (say '1'). I guess that was the limitation on the H/W. May be the msp430 implementation should be changed to observe that.

 

I don't have 3D printing resources. The PCB is 50mm x 85mm, i.e. same width, but shorter. I guess one can lengthen the PCB if desired.

 

I know The Sinclair was offered as a kit, so one can design a new PCB that fits and replaces the old one. May be cheaper to do than creating all the plastic parts.

 

/EDIT also thanks for your work on the original simulators, Ken Sherriff mentions your contribution on his page.

Hi!

I would like to know if I'm still in "hold", waiting a call for a kit of this calculator.... :ohmy:

What I really need could be:

 

- pcb

- acrylic case (if available)

- processor (1 pcs)

- bubble displays (2 pcs)

- int'l shipping to Italy

 

If those are still available to me, please let me know where to send money to buy it.

Thanks

Mario

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