iSpindel reporting extremely low voltage.

themoch commented 4 years ago

I'm submitting a ...

[ ] bug report
[ ] feature request
[x] support request => Please note that this repositories issues are intended for feature requests and bug reports.

Did you follow the general troubleshooting steps first:

[x] Follow through the FAQ ?
[x] Checked the logs for errors in the terminal console ?
[x] Searched for similar reports already ?

Report

iSpindel shows output of voltage at 0.036496 while multimeter reads 3.89 and this causes unit to go into safe mode, broadcasting every hour.

Context

I have tried multiple working batteries from other units to no success.

As stated in the FAQ I need to update my voltage factor in order to make the battery read correctly.

When following the formula I need to set the value to approximately 1.24. Because of the following lines of code it will not save those values:

iSpindel.cpp

 if (my_vfact < ADCDIVISOR * 0.8 || my_vfact > ADCDIVISOR * 1.25)
    my_vfact = ADCDIVISOR;

I have used the multimeter to check that I have the correct resistors in place AND they are reading at the proper resistance of 4.7K and 220K. The diode is oriented in the proper direction and is reading ~240

Your Environment

Firmware Version used: 6.3.1
Service backend you have configured the iSpindel to talk to: personal http endpoint logging and Arduino serial monitor

thegreatgunbantoad commented 4 years ago

If you're getting a voltage like that there is likely something wrong with the build. I would suggest checking your connections of the 220k right to the pin of the metal can on the ESP/Wemos board and to the pin of the Lipo Charge board. You're basically seeing 0 volts so suggests you have an iffy connection. Possibly a duff ESp/Wemos.

themoch commented 4 years ago

If you're getting a voltage like that there is likely something wrong with the build. I would suggest checking your connections of the 220k right to the pin of the metal can on the ESP/Wemos board and to the pin of the Lipo Charge board. You're basically seeing 0 volts so suggests you have an iffy connection. Possibly a duff ESp/Wemos.

I’m getting the correct readings at the polls on the d1mini. I’m suspecting that the batch of wemos I got are all bad. I have a few others with weird issues.

thegreatgunbantoad commented 4 years ago

A whole duff batch is pretty unlucky. I find about 1 in 10 of the Wemos clone boards on eBay are duff. For a while the Accelerometer boards were about 1 in 5 was duff, but that blight seems to have passed.

themoch commented 4 years ago

@thegreatgunbantoad It’s about 3/5 at this point. I have 2 others that act normal until you go to connect via wifi. Then nothing can connect to them.

One other that connects to the AP only about 20% of the time. The rest of the time it times out after 10 sec of trying. Sometimes that one says it's successfully connected, but then doesn't send data.

¯\_(ツ)_/¯

What's your source, maybe I'll try ordering from there?

thegreatgunbantoad commented 4 years ago

@themoch I just grab stuff off eBay and test everything. I have a PCB with sockets on it so I can use that as a testbed for the various parts and just plug then in and out as needed.

universam1 commented 3 years ago

Not firmware related

universam1 / iSpindel