diff --git a/docs/interfaces.md b/docs/interfaces.md index 3c1cf39d..3f5a7dbd 100644 --- a/docs/interfaces.md +++ b/docs/interfaces.md @@ -33,6 +33,7 @@ The ODrive can be controlled over various ports and protocols. If you're comfort (*) ODrive v3.5 and later Notes: +* You must also connect GND between ODrive and your other board. * ODrive v3.3 and onward have 5V tolerant GPIO pins. * ODrive v3.5 and later have some noise supression filters on the default step/dir pins * You can change the step/dir pins using `axis.config._gpio_pin`.