*Edit - Moved to Modifications, as I’ve discovered this is a software issue, most likely with the a GUI Mod, as it’s happened to a replacement Ekrano also.
Ekrano tank inputs show ‘open circuit’ for a KUS 0-180Ω resistive sender.
Initially, V3.54 showed this issue of ‘Open Circuit’ for the sender so I tried the beta 3.60~25 which has a patch for this, but still the sender input is not reporting. I tried both GUI-V1 / V2
I have tested all 3 tanks inputs, they always report an open circuit of 471Ω whether the sender is connected or not.
Connecting the same sender in to my Cerbo on V3.22 GUI-V1 and it works, I can see it is currently 65.3Ω when the tank is 40% full and have checked the resistance with a multimeter.
*EDIT: I have just tested manually moving the sender float up and down the 950mm rod, I can see the resistance; ‘Sensor Value’ changing on the tank setup page, but interestingly what should be 0Ω for an empty tank is 16Ω, and in the bottom 100mm the rod the Ω rises quickly to 360+ Ω until the 471Ω ‘open circuit’ is reached, when it should use all 950mm of the rod until getting to 180Ω at the top. So I guess the Ekrano inputs are converting the signal with too high a resistance?
I’ve tested changing the settings to US, EU and custom with widest range possible but it looks like the input logic see’s too high of a resistance, or the input connectors create too high a resistance value?
*Edit also tested Beta V3.60~39 - Tank input still not working
*Disclosure - I have installed GUI Mods + dBus-seriallBattery on the Ekrano with V3.54 before testing the Beta - They are also installed on the Cerbo that does work. - So realise it could still be GUI Mods related, but I see it was an issue before so thought I’d check to see if it’s an Ekrano / OS problem for others too?
I waited a few days for a response to fix this before swapping over the new Ekrano for the old Cerbo, and have just uninstalled all mods and done a fresh install of V3.54, sprayed contact cleaner on the terminal connector and still the tank inputs are broken.
I then tried V3.60~39 again as the earlier Beta 3.60~25 is meant to have a fix for this or a very similar tank input not working problem, sadly it hasn’t fixed this Ekrano.
I guess as no one else has responded with similar issues this means it’s not the OS so this brand new Ekrano is broken and I’ll have to RMA.
So I’ve had a few more issues with the replacement Ekrano, Initially it was working with V3.01 + V3.54 + V3.60~49
But V3.60~49 didn’t install GUI mods properly and I got a white screen for GuiV1 but could still SSH in and also see GuiV2 on my remote tablet using the Beta for WiFI tablets.
To get rid of the white screen I used a tip from @mr-manuel to run this command then reboot:
But then I lost the tank input again! I’m not sure how it’s related though!?
The only way to solve that was to do a Factory Reset, I first tried uninstalling all mods from Package Manager and with standard SSH for Dbus-serialbattery but still had to factory reset:
Although that process itself didn’t look good as it was stuck in a bootloop, I left it for 15 mins looping, then pulled the Ekrano Power and the SD card, powered it back up and the tank sensor was back.
I’m not exactly sure what’s causing the issue, I’ll slowly put the mods back on V3.54 to see if it happens again.
