Arduino Nano 33 Ble Sense board docs + bluetooth instructions

content/docs/reference/microcontrollers/nano-33-ble-sense.md

@@ -0,0 +1,17 @@
+---
+title: "Arduino Nano 33 BLE Sense"
+weight: 3
+---
+
+The [Arduino Nano 33 BLE Sense](https://store.arduino.cc/arduino-nano-33-ble-sense) is a very small ARM development board based on the Nordic Semiconductor [nrf52840](https://www.nordicsemi.com/eng/Products/nRF52840) processor.
+
+This is the same board as [Arduino Nano 33 BLE](nano-33-ble) but with additional onboard sensors (see below).
+
+Flash this board exactly the same way as [Arduino Nano 33 BLE](nano-33-ble) (target name is the same too).
+
+## Additional onboard sensors
+
+* Proximity [APDS9960](https://github.com/tinygo-org/drivers/tree/release/apds9960)
+* Pressure [LPS22HB](https://github.com/tinygo-org/drivers/tree/release/lps22hb)
+* Humidity [HTS221](https://github.com/tinygo-org/drivers/tree/release/hts221)
+* Microphone [MP34DT06JTR](https://github.com/tinygo-org/drivers/tree/release/microphone)

content/docs/reference/microcontrollers/nano-33-ble.md

@@ -5,7 +5,7 @@ weight: 3
 
 The [Arduino Nano33 BLE](https://store.arduino.cc/arduino-nano-33-ble) is a very small ARM development board based on the Nordic Semiconductor [nrf52840](https://www.nordicsemi.com/eng/Products/nRF52840) processor.
 
-There is also the [Arduino Nano33 BLE Sense](https://store.arduino.cc/arduino-nano-33-ble-sense) which is the exact same board but with additional onboard sensors.
+There is also the [Arduino Nano33 BLE Sense](nano-33-ble-sense) which is the exact same board but with additional onboard sensors.
 
 ## Interfaces
 
@@ -18,6 +18,10 @@ There is also the [Arduino Nano33 BLE Sense](https://store.arduino.cc/arduino-na
 | ADC      | YES | YES |
 | PWM      | YES | YES |
 
+## Onboard sensors
+
+* 9-axis IMU: [LSM9DS1](https://github.com/tinygo-org/drivers/tree/release/lsm9ds1)
+
 ## Machine Package Docs
 
 [Documentation for the machine package for the Arduino Nano33 BLE](../machine/nano-33-ble)
@@ -69,6 +73,13 @@ Once you have installed the needed BOSSA command line utility, as in the previou
 
 Instructions needed here.
 
+## Bluetooth
+
+Nordic Semiconductor's SoftDevice (s140v7) must be flashed first to enable use of [bluetooth](https://github.com/tinygo-org/bluetooth) on this board.
+
+SoftDevice overwrites original bootloader and flashing method described above is not avalable anymore.
+Instead, please use [debug](../../guides/debugging.md) probe and flash your code with `nano-33-ble-s140v7` target.
+
 ## Notes
 
 You can use the USB port to the Arduino Nano33 BLE as a serial port. `UART0` refers to this connection.