Hello, The electronic schematic of v3.2 shows current sensors that must be powered at 5V, however, the board comes preconfigured at 3V3, this could be a problem for the correct reading of phase current.
2 Answers
2Have a look here: Possible bug in SimpleFOCShield v3_2024-06-23 - #5 by gimbal_pete
I’ve tested it with the VDD bridge to +5V and with a Nucleo64, and it works fine. To work at 3V3, the ideal solution is to replace the ACS712 with a 3V3 one. I’ll look for a compatible one and post it in the next few days.
This one is more noisy (20mV noise and 132mV/A sensitivity = 151mA, versus 21mV noise and 185mV/A sensitivity = 114mA for the ACS712), but is 3.3V and pin compatible https://www.lcsc.com/product-detail/Current-Sensors_Cross-chip-CC6903SO-10A_C469386.html
– dekutree64