Yea I spotted the signals were the same. I have a hybrid auris sitting in my drive, I believe it’s identical to the gen 3 Prius, so can log any data we need. My logic analyser is quite old, but I should be able to make up something with an stm32 to log both sides of the communication. I actually hav...

Im looking to see what the difference between the gen 2 and gen 3 Prius transaxle motors are, I know there is slightly different power outputs, but do the motors have the same number of poles etc? Considering trying to drive my gen 2 transaxle off a stock gen 3 inverter. I know changing the control ...

If you don’t have the WiFi module you can use a terminal application to change settings over the usart interface.

Be careful of the current sensor outputs on the gen 2 inverter, they are bipolar centered at zero volts, where as the STM32 add will want them at vcc/2 (or close to this). You might be able to use a pull up resistor on each of the two inputs to achieve this.

Great work! I wonder would it be possible to use dual or quad rs485 drivers for the inverter interface. Was there a particular reason for the Sam Microcontroller?

A number of the Blue Pills for sale on eBay only have the 64k processor, so you won’t be able to save your parameters unless you change the start of the eeprom block. 0x8001fc00 -> 0x800fc00, basically replace the 1 with a zero. The current firmware is about 38k, so will easily fit inside the smalle...

Good evening, I collected on such a Board inverter for the test, but there was a mistake DESAT what are the conditions for its appearance? Are you getting the desat error flagged every time you try start your dev board? You need to pull the fault line low, I believe the same line is used for a few ...

I assume your using a usb to serial converter to connect to uart3. Connect the tx and rx pins together on this converter, send characters and see if they echo back, them check the baud with the scope, sending U should be 1010....

I assume your grounds are ok too.

Thanks JB. This looks great, plenty of gen 2 inverters out there for little money.

Does the resolver require external excitation?

Are the gen2 current semsors not bi polar (-3 to +3v), so would need level shift and divide by 2. Or possibly a 10k to the 3v3 rail and 10k to the current sensor.

Looks interesting, should really reduce part count. Would it be an idea to put jumpers on the accelerator inputs to allow for a separate pot to each controller or a dual pot setup which is mapped to both controllers.