Thanks @exxos for sending over the boards from the manufacturer. Comparing to the older board size its a lot slimmed down and we have managed to pack in the audio codec / mixer chip as well. In addition the Micro-JTAG boards https://www.exxosforum.co.uk/forum/viewt ... =10#p44580 were also in the the batch.
Now I just need to find some Atari time which has become very scarce over the last month or so to build these :(
Am not looking forward to having a go at the MBGA chip but its going to be an adventure no doubt.
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Project: HDMI/DVI out for STFM
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Icky
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Re: Project: HDMI/DVI out for STFM
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Icky
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Re: Project: HDMI/DVI out for STFM
Well thats the easy side SMT components soldered using the higher temp solder paste. Just a little clean up needed as I have spotted a couple of solder bridges.
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Icky
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Re: Project: HDMI/DVI out for STFM
Well that wasn't fun and must be the smallest, most dense work (MBGA) I have done so far. Just need to give it a clean and then see if it works or ends up in :fire:
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PhilC
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Re: Project: HDMI/DVI out for STFM
@Icky nicely done. Hope all well under that BGA chip.
Look forward to seeing if it works or not :D
Look forward to seeing if it works or not :D
If it ain't broke, test it to Destruction.
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Icky
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Re: Project: HDMI/DVI out for STFM
@PhilC - no joy yet and no :fire:. Have checked for shorts and their aren't any but it isn't programming at the moment so am suspecting the MBGA soldering.
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rubber_jonnie
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Re: Project: HDMI/DVI out for STFM
Oooh, BGA, nasty.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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Icky
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Re: Project: HDMI/DVI out for STFM
Yep - I thought it was time to experiment with these packages as they are cheaper. @exxos suggested we need an x-ray machine to add to our arsenal of tools :)
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rubber_jonnie
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Re: Project: HDMI/DVI out for STFM
Or an army of nano-bots that can clamber underneath and eat any shorts (Simpsons reference there!)Icky wrote: 30 Aug 2020 17:12Yep - I thought it was time to experiment with these packages as they are cheaper. @exxos suggested we need an x-ray machine to add to our arsenal of tools :)
How many 'pins' does it have? I assume you must have to have a pretty accurate stencil to get the solder as you need it?
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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Icky
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Re: Project: HDMI/DVI out for STFM
@rubber_jonnie - 153 pins. The stencil worked and looking at the pads they all had paste on each pad and not too much.
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stephen_usher
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Re: Project: HDMI/DVI out for STFM
Aren't those packages designed to be fitted using machines which vibrate the chip very quickly, friction melting the solder?
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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