Hi all,
Today the driver burnt again...
As always after a stop.
No spi communication anymore so drv8308 dead!
I don't have any drv8308 left to change, some are ordered but i'am still waiting for them.
I will try another solution (partly tested by another member
@NormanB):
I ordered a BLDC8015A driver. (40Euro on ebay)
The idea is to make a small adaptor board to be able to use it without changing the code in the
M4.
The adaptor board will probably use a PWM converter to convert the 26kHz PWM from the
M4 to a 1kHZ (or to 0..5v if it is more easier to do).
We probably not need the adaptor board if we could have use 2 frequencies for the PWM in the
M4.
The 26kHz for the 2 drives
motor and the 1kHz for the mowing
motor.
But i don't knwo if this is possible.
The advantage of using the adaptor board is that we don't need to change the
M4 code.
I don't think the odometry is used for the mowing
motor so, I will not have to use this signal.
I will report back as soon as i will get the 8015A drivers and if the adaptor works well i will put the schematic here.
This way we will have another solution fully compatible for the ardumower.
See you in 1 or 2 week!
Stephane