diff options
| -rw-r--r-- | docs/BLTouch.md | 6 | ||||
| -rw-r--r-- | docs/Config_Reference.md | 5 |
2 files changed, 7 insertions, 4 deletions
diff --git a/docs/BLTouch.md b/docs/BLTouch.md index 3a5c6ba6..0f97bc91 100644 --- a/docs/BLTouch.md +++ b/docs/BLTouch.md @@ -10,11 +10,13 @@ Hook up the BL-Touch "servo" connector to a `control_pin` according to the BL-Touch documentation or your MCU documentation. Using the original wiring, the yellow wire from the triple is the `control_pin` and the white wire from the pair is the `sensor_pin`. You need to -configure these pins according to your wiring. For example: +configure these pins according to your wiring. Most BL-Touch devices +require a pullup on the sensor pin (prefix the pin name with "^"). For +example: ``` [bltouch] -sensor_pin: P1.24 +sensor_pin: ^P1.24 control_pin: P1.26 ``` diff --git a/docs/Config_Reference.md b/docs/Config_Reference.md index d7dc8290..3c1f4017 100644 --- a/docs/Config_Reference.md +++ b/docs/Config_Reference.md @@ -1552,8 +1552,9 @@ section for the details). ``` [bltouch] sensor_pin: -# Pin connected to the BLTouch sensor pin. This parameter must be -# provided. +# Pin connected to the BLTouch sensor pin. Most BLTouch devices +# require a pullup on the sensor pin (prefix the pin name with "^"). +# This parameter must be provided. control_pin: # Pin connected to the BLTouch control pin. This parameter must be # provided. |