@jcaron Please note these curves are drawn for 5C (= 5 times rated capacity in chargecurrent) steps.
If your application draws less current (say below 1C) you can expect that the dependency of voltage with dischargging current is also less pronounced.
But anyhow it remains battery and temperature dependent. For discharge currents below 1C the effect of temperature might be more visible than of the discharge current.
@jcaron We are using the pysense library for it.
It could have been the suggestion we read somewhere else on the forum for connecting P8 with a resistor to 3V3. If we remove the resistor it seems to work. More testing being done at the moment.
Well You should start with documentation and step by step work on representing the dashboard and implement the services according to it, I am also trying work something similar,
So I hope this might help you out
I am also planning something similar but I am facing the same problem. Although, for me their is something more to the story. I am not using the conventional AWS servers, I am using the managed AWS cloud servers which is powered by Cloudways. So, does your research woks fine for me or I have to figure out something else to counter the issue.
@reidfo my hint may have been wrong. I remember that I could call attach() with band=8, not getting any error, but it simply did not attach. So maybe Paul knows how to get that information from the modem.
@peterb If you look at the PCB, from pin 2 (ISET) of the charger a trace goes directly to a 0402 resistor (which is connected to GND), measuring 1.2 kOhm. Looks pretty obvious to me. Probably difficult to see without microscope though.
This is a digital input, not an analog one. Re-read what I wrote about input protection. How much current flows into the input? Draw a schematic including the input protection as in the article you are referring to (hint: Figure 6).
Do you mean what you wrote when you said to use an input series resistor. Is the circuit above what you meant?
EDIT: I have since found out that the impedance will be minimal. It is just the resistance of a short cable. So less than 1 ohm. Also this device will go into deep sleep in which case there will still be the analog but no power to the FiPy. Won't this then apply a voltage to VDD?
Has anyone managed to successfully hand solder the OEM modules onto the reference boards?
Lots of solder. Higher great settings. Patience.
Nothing seems to work!
Yes I've done this many times. My secret is lots of flux, drag soldering and cleaning up with solder wick and more flux. Most problems come from using too much solder creating shorts underneath the pads or too little solder and not making a solid connection.