Reef-pi wont start

[robertmosen]

Hi,

My reef-pi works great. I have temp and pH connected. There's one problem thou, it wont POST in some situations.

My setup:
Raspberry Pi 3B+
Latest linux (apt update and upgrade)
reef-pi 6.0
Cheap aliexpress analog pH board and pH probe
ADS1115 via i2c

I've connected the pH board to A0 on the ADS1115. I get readings and all is well. Temp probe is connected through the pH-board and reports temp.

If i press restart in the admin menu the raspberry reBOOT and then...nothing. Blank screen on HDMI-display.

If i disconnect the pH-probe = POST and BOOT ... then i can reconnect the probe and everything works as it should
If pH-probe is connected and i remove the ADS1115 (socketed) instead = POST and BOOT

I suspect something is going on with the ADS1115. Is it shorting or produce weird stuff on the i2c preventing the raspberry from POSTing? What am i missing here? Please help.

Kind regards,
Robert

 

[kyreefville]

Can you run it without rebooting and just let it run

 

[robertmosen]

Yes. No problems at all. Uptime atm = 3days.
But as soon i need to restart it wont POST/BOOT.

 

[kyreefville]

Unfortunately I don’t know enough about coding raspberry pi to help. Not even being able to see the boot log error on screen makes it tough. I use my pi for a network server and never have to reboot it just runs for years.

 

[biznatch]

Are you using an SSD for storage? I noticed when I switched to that, I cannot just do a reboot though SSH or I have the same issue. I have to do a hard reboot by cutting power to the Rpi. Doing that, it starts up with no issues every time.

 

[robertmosen]

Are you using an SSD for storage? I noticed when I switched to that, I cannot just do a reboot though SSH or I have the same issue. I have to do a hard reboot by cutting power to the Rpi. Doing that, it starts up with no issues every time.

Nope.
Nvme connected to usb.

 

[biznatch]

Nope.
Nvme connected to usb.

My SSD is attached via USB as well. Sounds like the exact same problem. I can't even SSH to the rPi if I do a soft reboot, and the activity light on the SSD box doesn't flash like normal. Restarting reef-pi itself isnt an issue, so it's something with the rPi or the OS when using USB attached storage. I never had a problem with the SD card, but I use the flow meter addon with 4 flowmeters, and it would only be a matter of time before that amount of writes would kill the SD card.