@sleve_mcdichael said in In-game saves in Zelda 1&2 NES (lr-fceumm):

Can you clarify? You're using the (Rev 1) rom and you're seeing saves persist? Here is the rom that I am using (md5sum):

No, the ROM file I was using for test doesn't have the Rev 1:

md5sum Legend\ of\ Zelda\,\ The\ \(USA\).zip ba3737710651036dbb3b28b88b9dfbb0 Legend of Zelda, The (USA).zip

never mind because i put the on/off switch in the middle. ugh. it says on the website that this battery bank stays on, but it goes to sleep after inactivity. does anyone have any reccomendations on a dual output usb battery bank that charges via a micro usb port and stays on? and is relatively small?

One more thing I would like to add after using this battery is that it WILL pass through power while charging, which means I can plug it into the charger and play while charging. This battery will also power down on a quick double-tap of the power button which means you don't have to have a power switch to use after safe shutdown. HOWEVER, when you are charging, it will automatically pass power through to the Pi whether the battery is turned on or not. This means that your Pi will power on while charging unless you shut it down after plugging in the charger. I'd recommend the power switch anyway.

Seems pretty straightforward to run a script from EmulationStation. Proof of concept, here is a crude 10-minute version I made using Hursty's "Bluray" theme. It already contains a "Power" system, so I just added a small script, uploaded a small .png of the DualShock controller and edited the gamelist.xml file.

MAIN MENU (from Hursty):
main menu.png

SELECTION:
selection.png

OUTPUT W/Pause (currently requires a keystroke instead of a button-press, but can modify this):
ps4power-2020.04.14-17.24.46.png

The simple script:

#!/bin/bash clear echo PS4 Dual-Shock Battery Level: cat /sys/class/power_supply/*/capacity echo read -p "Press Enter to continue"

Be sure that the script is set as executable.

Lastly, the es_settings.cfg entry for the "Power" menu item to appear:

<system> <name>power</name> <fullname>Power Menu</fullname> <path>/home/pi/RetroPie/roms/power</path> <extension>.sh .SH</extension> <command>%ROM%</command> <platform>linux</platform> <theme>power</theme> </system>

Ideally, the output would be prettier and require a DualShock button to be pressed instead of the keyboard Enter key, but this will certainly work.

@Eyeball_36 iirc there's a specific sensor of sorts that would enable the potential to have an onscreen battery type of thing but it wasn't part of the raspiboy hardware. It was one of the grievances I had with the hardware, until it just fried completely. Sorry I'm not much more help

If I were to do the handheld thing again I'd do the mintypi V3

@cyperghost yeah, I will try to do that

we could some how adjust the ps3 battery check post here: https://retropie.org.uk/forum/topic/12945/wireless-battery-indicator-ps3/10
And try it for ps4 controllers anyone know of any other scripts please comment!

@caver01 That's true, I am also investigating udev and xrender as I was told by a friend that a rule could probably be defined to handle that behavior. Indeed, since the portable screen will be connected internally (inside the box) to the raspberry pi, we can know for certain which HDMI port is associated to the screen and therefore differentiate it from the other one which would be assumed to be an external screen.

EDIT: Actually, I realize now that contrary to USB ports, HDMI splitters only duplicate the input display to two outputs in an identical way, so I am no longer sure udev understands it is communicating with two different displays.

@caver01 @rbaker I am also investigating using a USB Power Bank as a UPS (which I read from over at http://raspi-ups.appspot.com/en/index.jsp). Some models have smart charge features and are able to serve while charging and feature two USB ports (which is useful to provide power to both the Raspberry Pi and the portable screen).

Controlling the power drop seems feasible using a voltage diviser and an analog digital converter bound to the Raspberry Pi GPIO (one reference among others: http://raspi.tv/2013/controlled-shutdown-duration-test-of-pi-model-a-with-2-cell-lipo).

A quick Amazon search provides results that I believe could do the trick (like http://amzn.eu/fAd5fRV which:

is pretty cheap (~20 bucks), has a 16.75A capactity, provides 5V outputs, provides 3A max on each of its 2 ports,

I am guessing this could be used as a UPS.

Just as a side note I have seen several interesting projects providing UPS boards for the Raspberry Pi. But they seem focused on powering it through the GPIO (as far as I understand) and therefore do not seem very appropriate to me if I want to power a portable screen as well.

Another side note to say that I don't have any stakes at Amazon (and my links aren't sponsored), it just seems convenient to provide examples :)

EDIT: changed the example provided for a more suitable USB Power Bank

@silverbullet
So I did a little detective work.
It looks like in RetroPie 4.4/Stretch the /var/log/sixad file was removed and the logs for sixad are sent to journald ("/run/log/journal/44377289e4ad47738189eab7cbdb463a/system.journal" on my Pi) and i'm not sure if the script can read from that file as it contains a bunch of different logs.

to test this you can try changing batCheck.py from
"logPath='/var/log/sixad'" to "logPath='/run/log/journal/44377289e4ad47738189eab7cbdb463a/system.journal'" (note the big string of characters in the file path is probably different on your Pi!) and then running the script

I don't want to start any arguments so if a mod can delete this whole topic please?

@barrymossel The cost for the wood, Pi, SD card and joysticks will be roughly 200$ and he said he would be willing to pay more then how much it would cost just for the time i would be spending on making it for him.

I am going to put it in a NES advantage, and the two player switch "might" be used for power ON/OFF instead.

@joestrong as the man above me stated. And when it blinks it shows 1-4 lights at once. The less lights you see the less battery power you have. You can see this when you turn on your controller on as well

@LiqwdE I think I know what you mean. The type of connector that used to come on the old PCMCIA laptop cards back in the day.

My little pi zero is flanked by a microcontroller and a lithium battery protection board, you can read the whole project here

https://retropie.org.uk/forum/topic/2089/yet-another-pi-zero-portable

I normally make my photos backup to my Google drive then just right click and copy the image URL from photos.google.com seems to work ok

@PetroRie said in How do you charge your PS3/PS4 controllers?:

I have been doing that since the beginning. They will work fine, I dont understand why people will charge them separately. I never turn my Pie off, and I do leave the controller connected.

I do the exact same thing and have yet to have an issue.

Although now I'm upgraded to a Pi3 so not sure if Ill still use the USB or Bluetooth connection. But Ill still plug it in overnight to charge.