Tag Archives: nRF52832

Pixl.js – The Latest Addition to the Espruino Family

Espruino is a small computer that anyone can use to control things around it. Its JavaScript interpreter gives you instant feedback so that you can experiment and develop whatever your level of experience. Even if you can’t program, you can still get started quickly with the web-based graphical code editor! The Espruino family started with one board that promised so much potential after the first launch of the Espuiro Original, their first board but have seen grow from the original to several other boards like the Pico, Puck.js and the latest addition is the Pixl.js.

The Pixl.js Board
The Pixl.js Board

Espruino boards have known famously for their ability to be programmed with Javascript. They are described as the Board for the Web, codename Javascript for the Things. The new Pixl.js brings a new approach to the Espruino boards with the introduction of a small LCD, unlike its earlier predecessors which can be handy for playing some simple games.

Pixl.js Showing the Chrome T-Rex Game
Pixl.js Showing the Chrome T-Rex Game

The Pixl.js is a Bluetooth LE device with a connected display and is based around the Nordic Semiconductor nRF42832 SoC. The nRF52832 SoC is a powerful, highly flexible ultra-low power multiprotocol SoC. The nRF52832 SoC is built around a 32-bit ARM® Cortex™-M4F CPU with 512kB + 64kB RAM. The embedded 2.4GHz transceiver supports Bluetooth Low Energy, ANT, and proprietary 2.4 GHz protocol stack.

The Pixl.js can talk and control other Bluetooth LE devices making it a good option for mesh networking applications. It can act as a wireless display, a conference badge, or as a notification message console. The board measures about 60mm × 53mm × 15mm and the LCD is a 128×64-pixel monochrome display that features a white backlight. The board is very power friendly and can be powered from an attached micro USB connector and a CR2032 coin cell battery which can give it a whopping 20-day life of juice.

The Pixl.js board comes with some similar Arduino footprint. It has a standard Arduino GPIO header beneath it making it able to interface with existing Arduino shields. The board packs a lot of features and doesn’t even require a driver when plugged into a computer.

Pixl.js with an Arduino headers footprint.

Below are some of the features of the Pixl.js:

  • Bluetooth Low Energy
  • Espruino JavaScript interpreter pre-installed
  • nRF52832 SoC – 64MHz ARM Cortex M4, 64kB RAM, 512kB Flash
  • 54mm diagonal, 128 x 64 Sunlight readable monochrome display with white backlight
  • 20x GPIO in Arduino footprint (capable of PWM, SPI, I2C, UART, Analog Input)
  • Support for GSM, LTE, WiFi and Ethernet Arduino shields
  • 3v to 16v input range
  • CR2032 battery holder (20 days battery life with LCD on), or Micro USB (power only)
  • 4x 3mm mounting holes
  • 4x Buttons
  • Built in thermometer and battery level sensors
  • NFC tag programmable from JavaScript
  • Dimensions: 60mm x 53mm x 15mm

The Pixl.js board is available for purchase for £36.00 from the Espruino Store, and example tutorials are available on the Espruino site.

RAK8211-NB iTracker – An All Weather IoT Board designed for Asset Tracking with Bluetooth 5.0

In the last few years, we have seen a lot of love poured towards the hardware ecosystem especially hardware related to the Internet of Things applications (hardly would you find any board that doesn’t have one or two IoT offerings). Some boards give basic IoT functionality like providing you with a basic IoT connectivity interface with no extra add-ons while some boards goes the extra mile by providing more, RAK8211-NB iTracker is one of those boards.

RAK8211-NB iTracker

Rak Wireless, the Chinese based hardware company has recently launched a new IoT focused board called the RAK8211-NB iTracker based on the Quectel BC95-G NB-IoT Module, Nordic Semi nRF52832 Bluetooth 5 chip, and Quectel L70-R GNSS module. The Quectel BC95-G is a high-performance NB-IoT module which supports multiple frequency bands of B1/B3/B8/B5/B20/B28* with extremely low power consumption. The ultra-compact 23.6mm × 19.9mm × 2.2mm profile makes it a perfect choice for size-sensitive applications like the RAK8211-NB iTracker. The Quectel provides a flexible and scalable platform for migrating from GSM/GPRS to NB-IoT networks.

The RAK8211-NB is a module geared towards asset tracking and management due to its arrays of features, and it’s one of those board that supports the new Bluetooth 5.0. The board includes a vast array of connectivity options (NB-IoT, BLE 5.0 and GPS). The asset tracker module comes with five different sensors to monitor motion and environmental data, and can optionally be powered directly by a solar panel. It comes with accompanying sensors like an accelerometer, a light sensor and a barometric sensor. At the heart of the RAK8211-NB is the Nordic NRF52832 SoC. The nRF52832 SoC is built around a 32-bit ARM® Cortex™-M4F CPU with 512kB + 64kB RAM. The embedded 2.4GHz transceiver supports Bluetooth Low Energy, ANT, and proprietary 2.4 GHz protocol stack.

The RAK8211-NB module is Arduino friendly and can be programmed using the IDE. The board also provides SWD interface for programming the NRF52832 core. The combination of BLE and NB-IoT offers flexible low power consumption development along with a myriad of application option ranging from telemetry to live tracking and environment sensing. The RAK8211-NB iTracker provides applications in the following areas:

  • Vehicle location/fleet transportation management.
  • Safety monitoring of old/young children.
  • Animal protection and animal husbandry management.
  • Asset tracking and management.
  • Prototyping for NB-IoT Applications.

The below are some of the specifications of the module:

  • Connectivity
    • NB-IoT via Quectel BC95-G (Global) wireless communication module + SIM card socket
    • Bluetooth 5 via Nordic Semi nRF52832 Arm Cortex-M4F micro-controller (Arduino compatible)
    • GPS/GLONASS via Quectel L70 GNSS module
  • Sensors
    • LIS3DH ultra-low-power, high-performance 3-axes “nano” accelerometer
    • LIS2MDL ultra-low-power, high-performance 3-axis digital magnetic sensor.
    • Tilt sensor
    • BME280 pressure, humidity and temperature sensor
    • The OPT3001 intensity of light sensor
  • Expansion – 3x headers with SWD, 2x sensor out + tilt out (also usable as GPIO and analog inputs), 3.3V, GND, and reset
  • Power Supply – 3.5V to 18V via solar panel (P2) or battery (P3)
  • Dimensions – 43mm x 38mm x 18mm
  • Temperature Range – 40°C to +85°CBLE Features

The company provides instructions to use the module with the Arduino IDE, Espruino (JavaScript) and Arm Keil tools. The RAK8211-NB iTracker kit is available and sells for $98.40 + shipping on Aliexpress. Rak Wireless also offers another variant of RAK8211 with RAK8211-G based on the most of the same features, except GPRS is used instead of NB-IoT. It is sold for $87.40 + shipping.

Module provides BLE connectivity between tablets and cloud

by Alice Matthews@ electronicspecifier.com discuss about MBN52832 a BLE module:

A Nordic-based BLE module has been released by Murata. The latest MBN52832 device consists of Nordic Semiconductor’s nRF52832 IC, a 32MHz crystal for timing, and an on-board antenna. Additionally, it contains pins for an off-board omni-directional antenna and a NFC antenna. The module provides a Serial Port Interface (SPI) and UART interface to Nordic’s nRF52832 ARM Cortex M4 processor.

Module provides BLE connectivity between tablets and cloud – [Link]

hackaBLE – tiny nRF52832 BLE development board

hackaBLE uses the Nordic nRF52832 which in turn is based on an ARM Cortex-M4 core. So you can really program it with any ARM compatible programmer. We do have a convenient solution though, in the form of our Bumpy blackmagic probe compatible SWD debugger and our PogoProg.

Bluey, BLE Development Board Supports NFC

Development boards are assistant tools that help engineers and enthusiasts to become familiarized with hardware development. They simplify the process of controlling and programming hardware, such as microcontrollers and microprocessors.

Electronut Labs, an embedded systems consulting company, had produced its new BLE development board “Bluey” with a set of useful sensors and NFC support.

Bluey is an open source board that features the Nordic nRF52832 SoC which supports BLE and other proprietary wireless protocols. Bluey has built-in sensors that include temperature, humidity, ambient light and accelerometer sensors. Also, it supports NFC and comes with a built-in NFC PCB antenna.

The nRF52832 SoC is a powerful, ultra-low power multiprotocol SoC suited for Bluetooth Low Energy, ANT and 2.4GHz ultra low-power wireless applications. It is built around a 32-bit ARM Cortex™-M4F CPU with 512kB + 64kB RAM.

Bluey Specifications:

  • Nordic nRF52832 QFAA BLE SoC (512k Flash / 64k RAM)
  • TI HDC1010 Temperature/Humidity sensor
  • APDS-9300-020 ambient light sensor
  • ST Micro LSM6DS3 accelerometer
  • CREE RGB LED
  • CP2104 USB interface
  • 2 push buttons
  • Coin cell holder
  • Micro SD slot
  • 2.4 GHz PCB antenna
  • NFC PCB antenna

Bluey can be programmed using the Nordic nRF5 SDK. You can upload the code with an external programmer such as the Nordic nRF52-DK, or the Black Magic Probe firmware on STM32F103 breakout. But, within the built-in OTA (over the air) bootloader, you can upload the code directly using a PC or a phone.

The sensors on the board require a minimum of 2.7 volts to function properly, and the maximum power is 6 volts. Bluey’s design offers three different ways to power it, all of them have a polarity protection:

  1. Using the 5V micro USB connector (which also gives you the option to print debug messages via UART).
  2. The + / – power supply pins which can take regular 2.54 mm header pins, a JST connector for a 3.7 V LiPo battery, or a 3.5 mm terminal block.
  3. A CR2032 coin cell for low power applications.

You can use Bluey for a wide range of projects. The BLE part is ideal for IoT projects, or if you want to control something with your phone. The nRF52832 SoC has a powerful ARM Cortex-M4F CPU, so you can use this board for general purpose microcontroller projects as well.

Bluey is available for $29 for international customers from Tindie store. Indian customers can purchase it from Instamojo store. There are also discounts for bulk purchases. For more information about the board visit its github repository, where you will find a full guide to start and a bunch of demo projects.

MDBT42Q, nRF52832-based BLE module

The open hardware innovation platform Seeedstudio produces the MDBT42Q, a Bluetooth Low Energy (BLE) module. It is a BT 4.0, BT 4.1 and BT 4.2 module designed based on Nordic nRF52832 SoC, a powerful, highly flexible ultra-low power multiprotocol SoC ideally suited for Bluetooth low energy, ANT and 2.4GHz ultra low-power wireless applications.

txsxl4eeqdrnhrm9pk21et1w

MDBT42Q features a dual transmission mode of BLE and 2.4 GHz RF with over 80 meters working distance in open space. It is a 16 x 10 x 2.2 mm board which contains GPIO, SPI, UART, I2C, I2S, PWM and ADC interfaces for connecting peripherals and sensors.

nrf52832_mediumThe nRF52832 SoC is built around a 32-bit ARM® Cortex™-M4F CPU with 512kB and 64kB RAM. The embedded 2.4GHz transceiver supports Bluetooth low energy, ANT and proprietary 2.4 GHz protocol stack. It is on air compatible with the nRF51 Series, nRF24L and nRF24AP Series products from Nordic Semiconductor.

MDBT42Q Specifications:

  • Multi-protocol 2.4GHz radio
  • 32-bit ARM Cortex – M4F processor
  • 512KB flash programmed memory and 64KB RAM
  • Software stacks available as downloads
  • Application development independent from protocol stack
  • On-air compatible with nRF51, nRF24AP and nRF24L series
  • Programmable output power from +4dBm to -20dBm
  • RAM mapped FIFOs using EasyDMA
  • Dynamic on-air payload length up to 256 bytes
  • Flexible and configurable 32 pin GPIO
  • Simple ON / OFF global power mode
  • Full set of digital interface all with Easy DMA including:
  • 3 x Hardware SPI master ; 3 x Hardware SPI slave
  • 2 x two-wire master ; 2 x two-wire slave
  • 1 x UART (CTS / RTS)
  • PDM for digital microphone
  • I2S for audio
  • 12-bit / 200KSPS ADC
  • 128-bit AES ECB / CCM / AAR co-processor
  • Lowe cost external crystal 32MHz ± 40ppm for Bluetooth ; ± 50ppm for ANT Plus
  • Lowe power 32MHz crystal and RC oscillators
  • Wide supply voltage range 1.7V to 3.6V
  • On-chip DC/DC buck converter
  • Individual power management for all peripherals
  • Timer counter
  • 3 x 24-bit RTC
  • NFC-A tag interface for OOB pairing
  • RoHS and REACH compliant

pcb

This BLE module can be used in a wide range of applications, such as Internet of Things (IoT), Personal Area Networks, Interactive entertainment devices, Beacons, A4WP wireless chargers and devices, Remote control toys, and computer peripherals and I/O devices.

Full specifications, datasheet, and product documents are available at seeedstudio store, it can be backordered for only $10.