diff --git a/ports/atmel-samd/boards/pyportal/pins.c b/ports/atmel-samd/boards/pyportal/pins.c
index 7d4bc2a46a..ddb8fa08a2 100644
--- a/ports/atmel-samd/boards/pyportal/pins.c
+++ b/ports/atmel-samd/boards/pyportal/pins.c
@@ -8,8 +8,20 @@
 // microcontroller.pin.
 STATIC const mp_map_elem_t board_global_dict_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_AUDIO_OUT),  (mp_obj_t)&pin_PA02 },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_A0),  (mp_obj_t)&pin_PA02 }, // analog out/in
 
+    // STEMMA connectors
+    { MP_OBJ_NEW_QSTR(MP_QSTR_A1),  (mp_obj_t)&pin_PB02 }, // SDA
+    { MP_OBJ_NEW_QSTR(MP_QSTR_A2),  (mp_obj_t)&pin_PB03 }, // SCL
+    { MP_OBJ_NEW_QSTR(MP_QSTR_A3),  (mp_obj_t)&pin_PB00 }, // D3
+    { MP_OBJ_NEW_QSTR(MP_QSTR_D3),  (mp_obj_t)&pin_PB00 }, // D3
+    { MP_OBJ_NEW_QSTR(MP_QSTR_A4),  (mp_obj_t)&pin_PB01 }, // D4
+    { MP_OBJ_NEW_QSTR(MP_QSTR_D4),  (mp_obj_t)&pin_PB01 }, // D4
+
+    // Indicator LED
     { MP_OBJ_NEW_QSTR(MP_QSTR_D13),  (mp_obj_t)&pin_PA27 },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_L),  (mp_obj_t)&pin_PA27 },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_NEOPIXEL), (mp_obj_t)&pin_PB22 },
 
     // LCD pins
     { MP_OBJ_NEW_QSTR(MP_QSTR_TFT_RESET),  (mp_obj_t)&pin_PA00 },
@@ -40,18 +52,26 @@ STATIC const mp_map_elem_t board_global_dict_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_ESP_GPIO0),  (mp_obj_t)&pin_PB15 },
     { MP_OBJ_NEW_QSTR(MP_QSTR_ESP_RESET),  (mp_obj_t)&pin_PB16 },
 
+    // UART
+    { MP_OBJ_NEW_QSTR(MP_QSTR_TX),  (mp_obj_t)&pin_PB12 },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_RX),  (mp_obj_t)&pin_PB13 },
+
+    // SPI
+    { MP_OBJ_NEW_QSTR(MP_QSTR_MOSI), (mp_obj_t)&pin_PA12 },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SCK), (mp_obj_t)&pin_PA13 },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_MISO), (mp_obj_t)&pin_PA14 },
+
+    // I2C
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SDA), (mp_obj_t)&pin_PB02 },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_SCL), (mp_obj_t)&pin_PB03 },
 
     // SD Card
-    { MP_OBJ_NEW_QSTR(MP_QSTR_SD_MOSI), (mp_obj_t)&pin_PA12 },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_SD_SCK), (mp_obj_t)&pin_PA13 },
     { MP_OBJ_NEW_QSTR(MP_QSTR_SD_CS), (mp_obj_t)&pin_PB30 },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_SD_MISO), (mp_obj_t)&pin_PA14 },
     { MP_OBJ_NEW_QSTR(MP_QSTR_SD_CARD_DETECT), (mp_obj_t)&pin_PA01 },
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_NEOPIXEL), (mp_obj_t)&pin_PB22 },
-
     { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
     { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
+    { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
 
     { MP_ROM_QSTR(MP_QSTR_DISPLAY), MP_ROM_PTR(&board_display_obj)}
 };