I don’t need another multimeter, (so I keep telling myself this) but this does have logging ability, and some other features I find nice in this price range like the VA measurement, low burden voltage, burden voltage display, micro current, 15v diode checker, built in Flux capacitor and more. For all this in one meter in the palm of my hand, well I have to give this one a try.
I think the only current thing I can think of that might be nice for Version 2 in the future would be a kelvin 4 resistance testing. Even if this came at an extra cost for a special set of add on probes to make it possible with just plugging into two jacks that are wired in a special way.
After skimming the manual I did have one idea.
I was surprised to see it can be calibrated by the user and I like this feature, thank you.
So the idea is a way to dump the EEPROM calibration data to the SD card before making any changes. This also allows to restore the meter to the default or previous calibration.
Maybe this could be a future firmware feature update to include a way to backup the calibration data. Do a EEPROM dump and write the data to the SD card. Maybe keep the last 5 calibration data files on the SD card, one being the factory calibration for default factory restore, and 4 user calibrations that can also be used to track any drift over the years.
You could make this a menu to do a manual backup of the calibration data, or make it a requirement to have an SD card installed so the firmware writes the calibration data before any new calibration perimeters are saved, or both?
I also understand that memory space could be limited for firmware, so it might be easier to add a way to remotely pull the calibration data over blutooth with a single command added to the firmware for this EEPROM dump. Being that most of the code will be on github I’m sure someone will write an app or script to pull the calibration backup remotely over a Bluetooth terminal (if it supports Bluetooth terminal) as long as a command was built into the firmware to do the calibration EEPROM query?
Side Notes: I’m sure the manual is still being worked on with final touches, or is this the completed manual? If it’s comoleted I noticed at the bottom of page 58 it satiates CALIBRATION REFERENCE TABLE, but nothing follows this.
And the temperature calibration still says pending procedure, maybe this part isn’t comoleted yet?
Just some random thoughts.
Looking forward to receiving the new meter.
Thank you,
Scott