Helpdesk

I had power down timer set to 30 seconds (via the GUI) and disconnected the power source. After 30 seconds it powered down. When I reconnected the power source, nothing happened. I does not draw any current, and the LEDs at the RPi4 stay dark. It seems like the Strompi is dead.

I can still power up the RPi via the USB-C port (not via the µUSB at the Strompi). I cab still access the GUI.

Any hints how to make it work again?

Additional Info:
[gt]show-status

Time: 14:32:11
Date: Wednesday 09.12.2020
StromPi-Output: [nbsp]Power-Off [nbsp]
StromPi-Mode: Wide -[gt] Battery [nbsp]
Raspberry Pi Shutdown: Disabled [nbsp]
[nbsp]Shutdown-Timer: 10 seconds
Powerfail Warning: Enabled [nbsp]
Serial-Less Mode: Disabled [nbsp]
Power Save Mode: Disabled [nbsp]
Power-Off Mode: Disabled [nbsp]
Battery-Level Shutdown: Disabled
Powerfailure-Counter: 3
PowerOn-Button: Disabled [nbsp]
[nbsp]PowerOn-Button-Timer: 30 seconds
FirmwareVersion: v1.72c

[gt]adc-output
****************************
Wide-Range-Inputvoltage: 20.257 V
LifePo4-Batteryvoltage: 3.173 V [50%]
microUSB-Inputvoltage: not connected
Output-Voltage: 0.062 V

So there is no output voltage. Is the Strompi really broken? The wide range input voltage looks about right.

Hello Eggert,

please try to disconnect all power supplies and remove the CAP-Jumper for a couple of seconds.[nbsp]

This should restart the microcontroller on the StromPi and could solve your problem.

Best regards

Tim (Joy-IT)

In the meantime I got it working, I had played with the settings in the GUI, and suddenly it came to life. Can this happen again?

It happened again. Removing the jumper did not help. Can you tell me exactly which settings I should use for this scenario:

• Power by primary wide range (12 V), secondary by 1000mAh.


• High[nbsp] power USB output powers a monitor, about 1.2 A.


• RPi should start up without pressing the button.


• When primary power is switched off, RPi should run on secondary power and shut down.


• When primary power is switched on, it should start as normal.

Do I need the serialShutdown script?

Hello,

[nbsp]

Try the mode 6, StromPi-Mode: Wide -[gt] mUSB -[gt] Battery.

And test with a mUSB power, without the wide power.

Do you have a fix ip in the /boot/cmdline.txt? If yes remove it. I had troubles with the ip fix in cmdline.txt for the reboot process.

[nbsp]

finally, test this setup::

StromPi-Mode: Wide -[gt] mUSB -[gt] Battery.

Raspberry Pi Shutdown: Disabled
Shutdown-Timer: 30 seconds

WakeUp-Alarm: Enable
Alarm-Mode: Minute WakeUp-Alarm
Weekend Wakeup: Enabled
Minute Wakeup Timer: 01 minutes

[nbsp]

Normally, it should reboot after 1min.

[nbsp]

Raspberry Pi Shutdown: Enabled
Shutdown-Timer: 30 seconds

[nbsp]

Raspberry PI Shutdown: Enabled,

sorry.

[nbsp]

At the moment, it seems to run fine wit this setup:
[gt]show-status
Time: 00:02:19
Date: Wednesday 02.05.2018
StromPi-Output: [nbsp]Wide [nbsp]
StromPi-Mode: Wide -[gt] Battery [nbsp]
Raspberry Pi Shutdown: Enabled [nbsp]
[nbsp]Shutdown-Timer: 60 seconds
Powerfail Warning: Enabled [nbsp]
Serial-Less Mode: Disabled [nbsp]
Power Save Mode: Disabled [nbsp]
Power-Off Mode: Disabled [nbsp]
Battery-Level Shutdown: Disabled
Powerfailure-Counter: 17
PowerOn-Button: Disabled [nbsp]
[nbsp]PowerOn-Button-Timer: 30 seconds
FirmwareVersion: v1.72c
I have set up the serialShutdown.py script with a 5 seconds timeout. It will shut down the RPi after 5 seconds and then it is powered down after 60 seconds. When power is switched on again, it restarts fine. So it seems my problem is solved. Do I need the wakeup alarm settings? I do not want to restart it when the main power is off.

There is a trap one can easily step in: when the serialShutdown.py is running, it owns the serial port. The strompi_config_gui.py or the minicom will not work in this situation. This should be mentioned in the docs.

Hello Eggert,

that's great news, we will mention it with the next documentation update.

Thank you S. Reillon for your help in this thread.

Best regards
Tim (Joy-IT)