[Pre-Order] Safe Shutdown Switch (BangGood Edition) - Closed

[Allanrscott]

Do you have any boards remaining for purchase? Thanks!

[Paddy]

It's not working for me ... and I have no idea ... I have allready checked all wiring ... there are no shorts and everthink looks fine.

Failure: low-battery alarm after booting ... than shutsdown to kernel panic

My wiring is here:

1) 3.3v -> red -> pin 17 (pin gives me 3.3v)
2) off -> green -> pin 13
3) low -> white -> pin 11
4) on -> orange -> pin 15

config is edited:

Code: Select all

dtoverlay=gpio-poweroff,gpiopin=22,active_low="y"

aswell power monitor script is running (I can see the video short after booting)

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[Camble]

@Paddy Have you also wired up B+, V+ and V- ?

Also, please make sure you are using the latest version of the power monitor, and that it's the BangGood version.

https://github.com/Camble/GBZ-Power-Monitor_BG

[Paddy]

Hi Camble,

I sorry ... it looks like my fault. The safe shutdown works as promised. The LiPo is low on power ... after charging some minutes I'm only getting the warning without shutting down. I'm pretty sure that there will be no warning when the LiPo is fully loaded

So sorry ... B+, V+ and V- is wired but it's hidden under the PCB

[Paddy]

ok, I was too fast :/

- the banggood supply shows a green led which means the LiPo is fully loaded (power cord is connected)
- switching on the GBZ gives me a red and blue led which means the LiPo is charging and the USB port delivers power to the safe shutdown switch
- Pi is booting ... I'm getting a warning Power too low
- after some minutes the countdown starts

I will try this again with another LiPo

[Paddy]

also the other LiPo ist not working ... when the Pi boots up I'm getting the power too low warning ... after some minutes the countdown starts and ends with kernel panic ...

- LiPo is connect to B+ and B- of the Banggood supply
- B+ of Banggood is also connected with B+ of the safe shutdown
- USB + and - of Banggood is connected to V+ and V- of the safeshutdown (shows always 5V)
- PP1 and PP6 of safeshutdown is connect to the power circruit where Pi, Screen, etc. is connected to (shows only 5V when switched on)

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[Camble]

@Paddy Have you reinstalled the power monitor script?

[Paddy]

yes ... I removed it and the GBZ runs fine on battery ...

So I reinstalled the script ... but when I'm starting the script the countdown video starts:

Code: Select all

pi@retropie:~ $ cat /boot/config.txt | grep poweroff
dtoverlay=gpio-poweroff,gpiopin=22,active_low="y"
pi@retropie:~ $
pi@retropie:~ $ cd ~;git clone https://github.com/Camble/GBZ-Power-Monitor_BG.git
Cloning into 'GBZ-Power-Monitor_BG'...
remote: Counting objects: 355, done.
remote: Total 355 (delta 0), reused 0 (delta 0), pack-reused 355
Receiving objects: 100% (355/355), 7.04 MiB | 1.01 MiB/s, done.
Resolving deltas: 100% (142/142), done.
Checking connectivity... done.

pi@retropie:~ $ python ~/GBZ-Power-Monitor_BG/gbz_power_monitor.py              Video codec omx-h264 width 1920 height 1080 profile 77 fps 29.970030
Audio codec aac channels 2 samplerate 44100 bitspersample 16
Subtitle count: 0, state: off, index: 1, delay: 0
V:PortSettingsChanged: 1920x1080@29.97 interlace:0 deinterlace:0 anaglyph:0 par:1.12 display:0 layer:999999 alpha:180 aspectMode:0
have a nice day ;)

[Camble]

@Paddy Have you altered the script in any way?

Have you measured the voltage of your battery while the GBZ is on?

[Paddy]

no ... it's not touched ... but I will try not another Pin for the low battery. The battery is ok ... without script the Pi stays up:

pi@retropie:~ $ uptime
13:33:58 up 20 min, 2 users, load average: 0.02, 0.13, 0.24