TF2040 Design Complete

[Maximilian]

It certainly looks good. :yay:

As said a few mounting holes would be nice in the next revision.

[phoenixdownita]

Just registered, been lurking for a while, happy owner of TF328 and TF330 all from @supaduper in both cases with a fantastic deal and package and who I bug every few months to see if the TF360 fw/board is past the CD issue .... I already have an LC060 which I've never tested (china fake maybe who knows) but it's ready for it

First I want to thank Steven for all of his hard work with stellar results (for me the best CD32 experience so far possible), second I want to thank supaduper for an excellent service on the 2 TFs I got from him, and last I wanted to point out that 68040V are LC versions aka there's no FPU ( https://www.nxp.com/docs/en/product-brief/MC68040V.pdf ) ... it is indeed a 3.3V part, before LC060 price shooted up an FE040V costed more than an LC060 so it literally made no sense whatsoever ....

Anyhow thanks Steven, thanks supaduper ... fantastic work.

[terriblefire]

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[alexh]

Looking good. A2000 owners who have dreamed of owning an A2060 for decades are getting slightly moist at the prospect.

I notice the edge connector is square. Every PCB with an edge connector I've made was square (because I didn't know how to add a chamfer/bevel edge) and over the years I have destroyed quite a few slots. But they were mainly cartridge slots that require frequent insertion and removal.

Today PCB ordering has changed considerably but I was just curious to know if that is something you put in your design files? Or a post manufacturing step?

[terriblefire]

Looking good. A2000 owners who have dreamed of owning an A2060 for decades are getting slightly moist at the prospect.

I notice the edge connector is square. Every PCB with an edge connector I've made was square (because I didn't know how to add a chamfer/bevel edge) and over the years I have destroyed quite a few slots. But they were mainly cartridge slots that require frequent insertion and removal.

Today PCB ordering has changed considerably but I was just curious to know if that is something you put in your design files? Or a post manufacturing step?

The chamfer is an option you choose when you order (which i did). However JLCPCB are a bunch of useless ****** and dont bother to do it. They've also stopped removing parts of the panel too. I'm getting increasingly annoyed with them

[terriblefire]

So i am considering something like this to extend the card out to the front slot support.

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The mouse bites should let you remove it fairly easily. It will add cost though which has me worrying about it.

[go0se]

It is likely that the board house will charge the same or more for mouse bite panels added to the PCB as they would for the full length card. The detachable panels will still count towards the overall dimension of the board and that will probably be pretty steep on 4 layer.

How about adding three M3 holes along the side of the 2040 and then having two separate 2layer PCBs bolted on either side to bring the card back into line with the guide on the case?

If the two extender boards were identical then a batch of 5 would only add a few quid to the order for anyone that wanted them. They would also give a nice 1.6mm interface with the guide.

Or if people didn't like the idea of the PCB extenders then they could 3D print their own design and affix it to the three mount holes on the 2040?

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[terriblefire]

It is likely that the board house will charge the same or more for mouse bite panels added to the PCB as they would for the full length card. The detachable panels will still count towards the overall dimension of the board and that will probably be pretty steep on 4 layer.

Absolutely and I understood this. Its just that i think being able to remove the excess is very important if anyone was wanting to get this into a checkmate case at some point. For the right hand side of the card I'm absolutely going to add the M3 holes. For the left its a tough call because its actually only another 3cm extra needed.

[go0se]

Ah, apologies, I misunderstood.

I only envisioned the card being extended to the front side slot guide on the 2000 case, not the full length bonkers card dimensions of yore that went all the way to the backplate.

That's a whole lot of extra!

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[terriblefire]

Ah, apologies, I misunderstood.

I only envisioned the card being extended to the front side slot guide on the 2000 case, not the full length bonkers card dimensions of yore that went all the way to the backplate.

That's a whole lot of extra!

Yeah the missing part to the front plate is only 25mm on the current card. I could add that but then that would mess up trying to get it in a small enclosure for A500 use. But I'd like the option for it to not flop about by default, I think the mouse bites and a break off tab (or two) would be the best option that wouldnt leave me with multiple versions of the card.

For anyone reading this that doesnt understand my terror at two versions of the card.... I already have 14 cards. With 2-3 revisions of each. Its a support nightmare to have different options.