Current Ranger Calibration

Started by MT5axisCNC, May 11, 2023, 06:17:21 PM

MT5axisCNC

What steps do you follow to calibrate the current ranger?

I accidently pasted text into my serial console and messed up the calibration.

I figured out the LDO value, but am not sure how to find the Gain Value and Offset Value.

Felix

A simple way to do it on your own is to test with some random current value, and adjust the gain so that the ADC (OLED) reading is close to that value that you see at the raw output terminals (use a good DMM).
Offset is usually not necessary.

mrthreeplates

I upgraded my fw from a very old version to the latest and may have lost my calibrated values.  How do I set the LDO?

When doing the calibration, should I use a specific range?  Or check all ranges?

Thanks

Felix

You can check the LDO value on one of the 4 pin headers (ex. OLED or serial).
Then the calibration mentioned above can be done in the mA range.

mrthreeplates