Nordic nRF52832 DK

The nRF52 DK is a versatile single board development kit for Bluetooth® low energy, using the nRF52832 SoC.

AS OF APRIL 2019, THERE ARE NO MORE ESPRUINO BUILDS FOR THIS BOARD

Nordic Semiconductor have decided they no longer want to support Espruino on these boards. Firmware builds stopped at version 2.01. You may still be able to build yourself from the source on GitHub but this is not guaranteed.

If you'd like this board supported again, please ask Nordic Semiconductor on Twitter. With enough persuasion from the community they may decide that it is worth continuing their support.

In the mean time, check out our official Espruino boards, which will always have up to date firmwares available:

Puck.js Pixl.js MDBT42Q Bluetooth Module Jolt.js Pixl.js Multicolour Espruino WiFi Bangle.js 2 Bangle.js Espruino Pico Original Espruino Board

Contents

• Features
• Buying
• Getting Started
• Tutorials
• Information
• Pinout
• Serial Console

Features

• Low cost single board development kit supporting Bluetooth low energy, ANT and 2.4GHz
• Arduino Uno shield compatible
• All GPIO and interfaces available at edge connectors
• Segger J-Link OB Program/Debug supported

Buying

Nordic has a list of distributors on their website.

Getting Started

• Plug the nRF52 DK in
• Go to http://www.espruino.com/binaries (or http://www.espruino.com/binaries/travis/master/ for the absolute latest builds) and download the latest file named espruino_*_nrf52832dk.hex
• Save it to the JLINK drive that should have appeared on your computer and wait for the LEDs on the nRF52 DK to stop flashing
• The LED1 on the DK should flash to show Espruino has started. If it doesn't press the RESET button.

And you're ready to go! Follow the Getting Started Guide for details on getting the IDE connected wirelessly, or connect direct to the DK's communications port.

Tutorials

First, it's best to check out the Getting Started Guide

Tutorials using Bluetooth LE:

BLE Advertising with Node.js/Python/C#/Android Quick Start (Bluetooth LE) Automatic Data Download BTHome Library Puck.js to GCP BigQuery & Data Studio Stream from Puck.js to AWS IOT Core & SNS Email Bluetooth LE UARTs (NUS) Bluetooth LE HID Keyboards Bluetooth LE Security and Access Control Bluetooth LE MIDI Web Bluetooth on Linux Bluetooth Time Setter Using Web Bluetooth with Espruino Battery Monitor Bluetooth LE and If This Then That Tilt Hydrometer Repeater UART.js Library iBeacons Eddystone Beacons Bluetooth LE Printers Bluetooth LE and Node-RED with MQTT Bluetooth Music Controller Controlling Bluetooth Lights with Puck.js Bluetooth LE HTTP Proxies Exercise Machine controlled Video BLE Communications About Bluetooth LE (BLE) Puck.js with SMS control Pixl.js SMS Remote Monitoring Web IDE on a Raspberry Pi Puck.js Bluetooth with the Graphical Editor Controlling Other BLE Espruino Devices Pixl.js Simple Logger Pixl.js Multiplayer Pong Game Pixl.js Bluetooth to Ethernet MQTT Bridge Bluefruit LE app interface

Tutorials using Bluetooth LE and functionality that may not be part of the nRF52 DK:

BTHome and Home Assistant Setup BTHome Door Sensor for Home Assistant Pixl.js Wireless Temperature Display Turning an Espruino Puck.js Into a Universal Presentation Clicker Interfacing to a PC DIY Smart Meter LEGO Power Functions Clone Remote Control (Mould King M-0006 / Kaiyu / Bandra / AKOGD / MayD / etc) Controlling Espruino from Tensorflow on the Desktop Bookmarklets with Web Bluetooth Bangle.js Data Streaming Puckmote - Universal Remote Control IoT for Kitchen Gardens Time Machine Retro-Inspired Smartwatch Talos, Keeping You Safe During Your Commute Bluetooth Energy Usage Monitor Electric Skateboard Controller Wooden Bluetooth Remote for Lego Duplo Train Puck.js Control from Android using DroidScript Ikea Eneby Speaker Controller Pixl.js Wireless Weather Station Temperature Controlled Night Light with Puck.js Infrared Record and Playback with Puck.js Door Controlled Light with Puck.js Freezer Alarm

Information

• nRF52832 Datasheet
• Nordic nRF52 DK information

Pinout

Hover the mouse over a pin function for more information. Clicking in a function will tell you how to use it in Espruino.

• Purple boxes show pins that are used for other functionality on the board. You should avoid using these unless you know that the marked device is not used.
• ! boxes contain extra information about the pin. Hover your mouse over them to see it.
• 3.3v boxes mark pins that are not 5v tolerant (they only take inputs from 0 - 3.3v, not 0 - 5v).
• GND is ground (0v).
• ADC is an Analog to Digital Converter (for reading analog voltages)

Note: The nRF52 port has one available I2C, SPI and USART (and infinite software SPI and I2C). Unlike STM32-based Espruino boards, these peripherals can be used on any pin.

Serial Console

The nRF52 DK firmware exposes a serial console on D6 (RX) and D8 (TX) at 9600 baud. You can connect to this with the Espruino Web IDE, or a serial terminal application at 9600 baud.

Note: to be listening for bytes on the serial port, the MCU has to keep the high speed oscillator running. This means increased power usage over other nRF52 based devices that only turn the Serial connection on when it is required.

When you connect via Bluetooth, the console will automatically move over to Bluetooth. To stop this, execute Serial1.setConsole(true) to force the console to stay on Serial1.