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Another ATARI Portable


selgus

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2 hours ago, Ben from Plaion said:

Yes the legs on the socket I've been working on are straight, certainly bendable but I think too weak for a right angle, unless you have the socket actually attached to the PCB elsewhere other then the soldered legs.

 

Anyway, more then happy to send you a couple of my sockets, DM me if interested.

 

I very much like your case design and super to see original chips repurposed. Great project.

PXL_20240508_124516443.jpg

PXL_20240508_124504138.MP.jpg

Ben the pins look longer than the ones used on the 2600+. If so that is good because it means these could be used on actual consoles to replace old cart slots? 

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16 minutes ago, -^CrossBow^- said:

Ben the pins look longer than the ones used on the 2600+. If so that is good because it means these could be used on actual consoles to replace old cart slots? 

Yeah, pins at that length might be just be prototype lengths, I havent thought at all about selling them individually. Happy to send some spares out to test.

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Made some more progress assembling my portable motherboard.. all that's left are the electrolytic caps, some diodes, push buttons and then the sockets..

 

portable.thumb.jpg.f0dd15ff040def8f8a07919bf17350a1.jpg

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Still need to install the leds, but want to create a small jig to bend them properly at their right angle.. I had been just using needle nose pilers before, but that won't always be consistent from bend to bend.

 

Also, just have the cartridge port loose fitted, as I will test out @Ben from Plaion 2600+ cartridge port, when it arrives.

 

portable.thumb.jpg.3646f578862560e93eff9de703479b72.jpg

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17 minutes ago, selgus said:

Still need to install the leds, but want to create a small jig to bend them properly at their right angle.. I had been just using needle nose pilers before, but that won't always be consistent from bend to bend.

 

Also, just have the cartridge port loose fitted, as I will test out @Ben from Plaion 2600+ cartridge port, when it arrives.

 

portable.thumb.jpg.3646f578862560e93eff9de703479b72.jpg

Looking good!

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  • 2 weeks later...

Received the new 2600+ cartridge connector that @Ben from Plaion sent me from ATARI, and did some observations/testing to see what, if anything, this could mean for my portable.

 

Here are the different 7800 cartridge connectors-- left is the original 7800 console, middle is the new one that ATARI will start using in the 2600+ and the right is the right-angle version I'm using in the portable..

 

connector1.thumb.jpg.d90bc0aab895cb378679715e405e208b.jpg    connector2.thumb.jpg.4420ae48aa87d0ce5afffd8321eb4d6b.jpg

 

The new connector's leads are longer than the original 7800 console, which is good, as the original are too short for the portable. They are the same length as the one's I'm currently using, just not bent.

 

The new one's also have the same keying, which while nice, doesn't really add value to my use of the connector.

 

All the spacings, obviously, are the same..

 

connector3.thumb.jpg.723e02763dfa20e667b98c88447f299a.jpg

 

The downside of the new connectors for use in the portable, is the pins would need to be bent before installation, as the orientation is different than console sitting on a table/desk. These would need to be bent at precise distances/angles, to make sure it fit correctly into the enclosure and makes proper connection with a cartridge.

 

So my conclusion would be, unless I built some sort of jig to bend the pins just right, and the cost of these connectors were substantially less than my DigiKey right-angle versions, I should continue with my current setup.

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30 minutes ago, selgus said:

Received the new 2600+ cartridge connector that @Ben from Plaion sent me from ATARI, and did some observations/testing to see what, if anything, this could mean for my portable.

 

Here are the different 7800 cartridge connectors-- left is the original 7800 console, middle is the new one that ATARI will start using in the 2600+ and the right is the right-angle version I'm using in the portable..

 

connector1.thumb.jpg.d90bc0aab895cb378679715e405e208b.jpg    connector2.thumb.jpg.4420ae48aa87d0ce5afffd8321eb4d6b.jpg

 

The new connector's leads are longer than the original 7800 console, which is good, as the original are too short for the portable. They are the same length as the one's I'm currently using, just not bent.

 

The new one's also have the same keying, which while nice, doesn't really add value to my use of the connector.

 

All the spacings, obviously, are the same..

 

connector3.thumb.jpg.723e02763dfa20e667b98c88447f299a.jpg

 

The downside of the new connectors for use in the portable, is the pins would need to be bent before installation, as the orientation is different than console sitting on a table/desk. These would need to be bent at precise distances/angles, to make sure it fit correctly into the enclosure and makes proper connection with a cartridge.

 

So my conclusion would be, unless I built some sort of jig to bend the pins just right, and the cost of these connectors were substantially less than my DigiKey right-angle versions, I should continue with my current setup.

I seem to recall that Ben stated that these pre-release ports we are being sent will likely NOT have as long of a leads on them. I kinda hope they do as it would allow for more versatile installs going forward as both OEM replacements and other projects.

 

Your right angle version also has the pre-drilled holes for securing the port to the PCB while that isn't really as much of an option on the Atari remakes. Unless another bracket or something is put into the mix to attach it all into place.

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  • 3 weeks later...

Another update, another rev of the board.. I didn't like how I routed the audio output around the board, to get to the speaker connector. I wanted to cleanest signal, so I reworked the pcb so that the speaker connector is right next to the audio capacitors. I also have been optimizing the schematic, to utilize more resistor and capacitor arrays, hence lower the part count (building these by hand is tedious, though I think my next step is to utilize my infra-red reflow oven and solder paste, instead of hand soldering). I've populated all the passives (except for the large caps, which I normally do last) and most other parts.. moving to the smd ics next..

 

7800-pcb.thumb.jpg.aa00cdade971c9bbeba9802757bd9e9a.jpg

 

I also wasn't happy with the 3d printed faceplate for the product name (there just isn't enough surface area to get crisp full-color 3d prints), so I spent some time designing a die press that I am going to cnc out of steel, and press into aluminum sheet. This is closer to what ATARI actually did for the 7800 console, just on a smaller scale. This way each enclosure will be cheaper, too. This is the die I will be machining..

 

faceplate-die.thumb.png.170bcfee9d699f020e34102c53a90daf.png

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Thanks, making progress..

 

I think I have finished the die for pressing the faceplates, now to just get it cnc milled. Once done, I can just put it up on my hydraulic press and make as many faceplates as I wish.

 

faceplate-die.thumb.png.30b1d7a5cd9016bd58d4d151323eb843.png

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