Retroflag NESPi Case - Soft Power & Reset Hack

DaminouTav

Hardware done, hardware check OK, now I have to add a script into my distrib :)

Edit : Everything is working well :) Thank you @Yahmez ! (note, script into recalbox are already ready for this modification :) nothing to add)

Fernandike

I have a problem with the script. on my pi at the gpio readall on pin 25 its Mode IN and Value 0. i made all the other things what could be wrong. I tested hardware as you said and it was ok Please Help Someone

Yahmez

@fernandike download the newest version of the PDF. There is a link to pastebin pastes of the scripts in the updated PDF. Try using that instead of copying from the PDF.

Yahmez

@daminoutav glad you got it going!

Fernandike

@yahmez the one that says here? on the PDF?
and wich one its ok the raw or the oder one. by the way i dont know how i fixed that problem on the gpio readall

Fernandike

@yahmez the guide its awesome. tnx for that. do you have any video showing how it works. i couldnt make it work i tried everithing Visual test ok hardware test ok software test seems to be ok but neither resets or soft shutdown works. it just kills the power right away. and on the hardware test waits a few seconds to shuts off

Yahmez

@fernandike said in Retroflag NESPi Case - Soft Power & Reset Hack:

@yahmez the one that says here? on the PDF?
and wich one its ok the raw or the oder one. by the way i dont know how i fixed that problem on the gpio readall

Correct. Either one from the pastebin is fine.

Yahmez

@fernandike said in Retroflag NESPi Case - Soft Power & Reset Hack:

@yahmez the guide its awesome. tnx for that. do you have any video showing how it works. i couldnt make it work i tried everithing Visual test ok hardware test ok software test seems to be ok but neither resets or soft shutdown works. it just kills the power right away. and on the hardware test waits a few seconds to shuts off

Try it with the pi not screwed down, just loose. The same happened to me when I screwed it down because the underside of the pi pinched the on control wire and was shorting it to ground. If that fixes it, be careful how you route this wire. Really if all the tests are good, the only thing it could be is the on control wire shorting to ground.

I do not have a video of it but it works as described. Upon switching the power off, the pi shuts down, then in a couple seconds the NESPi case cuts power to the pi and the power LED on the case goes out.

MD500_Driver

@Yahmez

I followed your instruction and I am having a problem where the mosfet powers up immediately upon applying power and never shuts off. All of the switches work and have been verified with a MM.

I have verified that the power switch and reset switch are completely separated from one another, when you hit the power switch is connects ground to the center pins on the power switch which then connects ground to the "ON CONTROL" on the Mosfit (which should trigger the power on if it were not already on).

I have verified that when everything is running, hitting the power switch does cause the pi to initiate a shutdown but the mosfet never shuts off power after that and when I push the power switch back on, nothing happens and I need to remove input power and really it and then the power comes on immediately.

I have verified that the switch on the mosfet is in the OFF position as well.

The only thing I did differently was using a 470 cap instead of the 220 you had in your plans.

Any help would be greatly appreciated.

iggy

@md500_driver Hey There....I had the same problem.....did you make sure to cut the trace where the led is at ? There should be 5 traces that need to be cut on this board. If you miss this trace, the mosfet board will automatically turn on the moment you apply power.

0_1507267301166_8bd2eb64-631d-4bd7-9cd9-e0981460a9cc-image.png

Yahmez

@md500_driver
as @Iggy said, it sounds like ytou did not fully cut the traces on the power /reset switch PCB. I saw someone else have the same issue and he did not fully cut the traces.

MD500_Driver

@iggy @Yahmez

Thank you for the quick reply. You are absolutely correct, for some reason I missed that trace on the LED! I must have looked at those instructions 50 times, not sure how I missed it!

Thanks for the quick reply!!

MD500_Driver

@Yahmez

One other quick question. There has been talk of ES not saving metadata unless you shutdown via the ES scripts. In the case of nespi.py, it looks like you are calling shutdown. Does this cause problems with the metadata?

Thanks

cyperghost

@md500_driver Not if you use @meleu shutdown service.
https://retropie.org.uk/forum/post/107139

MD500_Driver

Thanks. I followed that to a T and yet I still lose favorites and recently played :-(

Fernandike

@yahmez I did it again from scratch and there in front of me there was my mistake It works so good Thanks and i appreciate your time on doing this and sharing it

jmcfsu13

Why does the reset and power switch have three rows of leads? for the power you connect to all three and on reset just the middle and bottom. Do you know the pinout for these switches? for the original reset mod the guy actually solders the top to middle lead on the reset switch.

@cyperghost @Yahmez - either of you know?

snarc

@cyperghost:
Sorry, if that is a "noob question" but do I have just to follow the instructions of meleu and create the killes.sh and killes.service files "beside" the script of yahmez (leaving the script of yahmez "untouched") or do I have to modify the script of yahmez, too (and if yes in which way)?

Regards!

cyperghost

@snarc No....
The shutdown service is intended to work without any modification to the shutdown/button scripts. That's the big advantage here ...

Of course you can modify the python script to call a specific shutdown script. That would also work.

snarc

@cyperghost

THX, tried it out and it works perfect! YES! :D