sudomod

Short introduction to my black "beauty".

It was a very funny project ... and killed a lot of time.

Basically, I'm satisfied, but at one point or another, I could have worked cleaner. I think for my first build, it is okay.

See my parts list for more details:
https://docs.google.com/spreadsheets/d/ ... sp=sharing

Best regards from germany

Pictures:

Nice work! I actually like the screws on the sides, subtle so it doesnt look like hack job.

DrMeet wrote: ↑

Sat May 05, 2018 10:19 am

Short introduction to my black "beauty".

Basically, I'm satisfied, but at one point or another, I could have worked cleaner. I think for my first build, it is okay.

nice build....

for a first build you did really well
and its good to see another HDMI build.....


can you share some of what you did...

how you modified the screen to fit (as its the later version of the Kedei HDMI, which others have complained about fitment issues)
and also how you extended the SD Card on the Pi3 (as it doesn't have test pads like the Pi0)...

also hows the power on the system, are you getting the lightening bolt pop up with your setup....


thanks, nice build....



.

Ok, I probably did not take enough pictures...and I do not want to completely dismantle the gb again. SORRY

So I try to explain it.

SD Card Socket: I have the aluminum shield bent up by desolder the two soldering points in front...then I soldered the lines directly to the pins and soldered the shield again.

HDMI Screen: I have the screen separated from the lower main board ... with a scalpel carefully solved. I have also removed the touchscreen from the screen, it's like a foil just peel it off (then the picture appears clearer). I cut the pcb accordingly, the labeled area can be completely removed. From the screen itself, all protruding plastic (white) parts were removed with a file. so the screen fits without making any adjustments to the dmg housing. Furthermore, I remove the audio jack, gpio connectors, main switch and the microusb from the pcb.

Power: First I used the following power adapter/charger, but 1A is not enough.The lightning bolt came over and over...and games have heavy framedrops and sound stutterring about every 2 minutes.

5V 1A

The other adapater works flawlessly without any problems...

5V 2.1A

Problems:

• Safeshutdown: low Bat detection doesent work (i have no idea why - the power off works flawlessly - it is not noticeable to see in the logfiles) EDIT: i pulled the lowpin manually to ground...but nothing happens. I change the GPIO Pin from 17 to 18 with the same result...that drives me crazy!
  
  EDIT2: i use

  Code: Select all

  gpio readall

  and the GPIO 17 works ... but the script does not react to that ... why?

EDIT3: ok i use the to check if the Safeshutdown 1.0 PCB is working...and yes it works great, exactly at 3.25V the GPIO 17 goes into the status "low" (0). The Power Monitor script does not recognize this condition ... but why?
@Camble: i hope you can help!

(Can we discuss this here? I can not really get on with it!)

And please excuse my bad english ... if you do not understand something please just ask again.

Very nice. Those side screws are a great way to hold it together. How is that joystick placement for play-ability? I figure with N64 games the Z trigger would be hard on the hand assuming you'd be using R1 or R2. I'm still undecided where to go on my CM3 build.

I also have issues with the low power on the generic Safeshutdown. My system actually slows down when GPIO 17 is in low state, so it does seem like the script is doing something. Haven't delved into it more yet, as the slowdown works fine for me for a battery warning. Your Pi3 might not experience the slowdown being faster than my Pi0. Perhaps the omxplayer command needs modification on line 32 in the script?

Concerning N64 and playability I can not say anything yet. I am not that far yet. But I tend to make it rather impractical and more likely to show "yes it works and it's nice to have" more unfortunately not.

I have no slowdowns if GPIO17 goes to 0.
i hope the script will soon optimized.

Best regards

DrMeet wrote: ↑

Sun May 06, 2018 4:15 am

• Safeshutdown: low Bat detection doesent work (i have no idea why - the power off works flawlessly - it is not noticeable to see in the logfiles) EDIT: i pulled the lowpin manually to ground...but nothing happens. I change the GPIO Pin from 17 to 18 with the same result...that drives me crazy!

There is an issue with the current version of the script (https://github.com/Camble/Safe-Power-Monitor/issues/10) so low battery detection should be disabled.

I'm currently writing a new version as there seems to be a few other niggles with the existing version.

Alternatively, the original script is still available: https://github.com/Camble/GBZ-Power-Monitor_BG

How many hours of playtime are you getting with those batteries?

No I have not tested yet. Which game or program should I run? The playtime is very dependent on the cpu utilization.

EDIT:
Ok here are my results.

I testet SNES Super Mario Kart...killer loop.

I have two SSH Sessions on.

RPI3B
Battery capacity: 6800 mAh
WiFi ON
BT ON
CPU@1200 MHz

Runtime: 03:31:15 (GPIO goes to low (3.25V))

Hey DrMeet,

Which charging Controller are you using?

Grüße aus Berlin
Peter