2023-11-27, 04:58 AM
OK, will do.
I have also worked out the IS pins on the BTS7960 motor drivers to provide a single analog current input signal. After reading the datasheet for the driver I found the IS pin is a current source with ratio to load current, ratio is 8500:1. Connecting both IS pins together and adding the appropriate resistor to ground and then a RC filter to filter the extremely noisy current signal I get a nice, stable current signal just adding two resisters and a cap. I don't really need an extra circuit board for that!
So far, so good.
I am also thinking of porting it to one of the more powerful black pill boards. Not for the computing power but because many of the blue pills out there are Chinese knockoffs. I have also found a pill board using the STM32L412 which is the ultra-low power board which may be of interest for sail applications($11):
https://www.digikey.com/en/products/deta...bgQAvD_BwE
Brad
I have also worked out the IS pins on the BTS7960 motor drivers to provide a single analog current input signal. After reading the datasheet for the driver I found the IS pin is a current source with ratio to load current, ratio is 8500:1. Connecting both IS pins together and adding the appropriate resistor to ground and then a RC filter to filter the extremely noisy current signal I get a nice, stable current signal just adding two resisters and a cap. I don't really need an extra circuit board for that!
So far, so good.
I am also thinking of porting it to one of the more powerful black pill boards. Not for the computing power but because many of the blue pills out there are Chinese knockoffs. I have also found a pill board using the STM32L412 which is the ultra-low power board which may be of interest for sail applications($11):
https://www.digikey.com/en/products/deta...bgQAvD_BwE
Brad