The AD collection voltage value of STM32F103VET6 is inaccurate and changes a lot. After the average filtering is done, the difference between the two collected data is still very large. Please help me. This is the data collected twice
Edith 发表于 January 8, 2021
It is normal for a signal of mV level to skip a few words!
Lennon 发表于 January 8, 2021
It is recommended that you can add an external high-precision reference, connect it to an ordinary ADI interface, and then reverse the power supply voltage, or associate other channels with this.
Dorian 发表于 January 8, 2021
Remove the total maximum value, remove the total minimum value, and then average filter.
