diff --git a/src/machine/board_feather-stm32f405.go b/src/machine/board_feather-stm32f405.go
index ebba9edc..0fd14956 100644
--- a/src/machine/board_feather-stm32f405.go
+++ b/src/machine/board_feather-stm32f405.go
@@ -231,6 +231,9 @@ const (
 
 	I2C_SDA_PIN = I2C0_SDA_PIN // default/primary I2C pins
 	I2C_SCL_PIN = I2C0_SCL_PIN //
+
+	SDA_PIN = I2C0_SDA_PIN
+	SCL_PIN = I2C0_SCL_PIN
 )
 
 var (
diff --git a/src/machine/board_feather_rp2040.go b/src/machine/board_feather_rp2040.go
index 9226760b..77981b23 100644
--- a/src/machine/board_feather_rp2040.go
+++ b/src/machine/board_feather_rp2040.go
@@ -38,6 +38,9 @@ const (
 
 	I2C1_SDA_PIN = GPIO2
 	I2C1_SCL_PIN = GPIO3
+
+	SDA_PIN = I2C1_SDA_PIN
+	SCL_PIN = I2C1_SCL_PIN
 )
 
 // SPI default pins