Nordic Semi nRF52840 vs nRF52832 vs nRF52810 Comparison for Bluetooth 5 Applications

Bluetooth 5 was formally introduced earlier this year with promises of four times the range, and twice the speed. Several companies offer chips that are compatible with the new standard, and among them Nordic Semi offers Bluetooth 5 ready solutions via nRF52840, nRF52832, nRF52810 Bluetooth SoCs. However, if you thought – like I did – that all three would provide the same Bluetooth 5 support with just some differences in memory, storage and performance, a comparison table put together by Raytac Corporation will show that among the three SoCs only nRF52840 will support the longer range, while the two older SoC only support the extra bandwidth offered by Bluetooth 5. I could find a blog post about a long range demo that confirms the above: Two nRF52840 Preview Development Kits (PDK) or nRF52832 Development Kits. A combination of the two different kits can also be used. Notice that if the […]

Nordic Thingy:52 Bluetooth 5 IoT Sensor Development Kit Targets Mobile & Web App Developers

Some developers may be interested in providing solutions for the Internet of Things, but they may not have the skills or interest in making their own hardware, and/or develop firmware, and just want to create demos or prototypes quickly, focusing on app development instead. Nordic Semiconductors has recently launched Thingy:52 IoT Sensor Kit with Bluetooth 5 & NFC connectivity, and various sensors for those developers. Nordic:52 IoT Sensor development kit (nRF6936) hardware specifications: MCU – Nordic Semi nRF52832 ARM Cortex-M4F Bluetooth 5 System on Chip (SoC) Connectivity – Bluetooth 5 LE and NFC Sensors Temperature,Humidity, Air pressure, Air quality (CO2 and TVOC), color and light intensity 9-axis motion sensing – Tap detection, orientation, step counter, quaternions, euler angles, rotation matrix, gravity vector, compass heading, raw  accelerometer, gyroscope, and compass data Audio Speaker for playing prestored samples, tones, or sound streamed over BLE (8-bit 8 kHz LoFi) Microphone streaming (ADPCM compressed […]

Nordic Semi Unveils nRF52840 Bluetooth 5 Ready SoC and Development Kit

Nordic Semiconductor nRF52xx Bluetooth and 2.4 GHz solutions are very often found in development kits and low power devices such as wearables, and it’s no surprise that the company introduced a new nRF52840 SoC supporting Bluetooth 5, the new standard promising twice the range, and four times the speed of BLE 4.x, as well as ANT, 802.15.4, 2.4GHz proprietary, and NFC connectivity. Nordic Semi nRF52840 key features and specifications: MCU – 32-bit ARM Cortex-M4 @ 64 MHz with with FPU Memory & Storage – 256 KB RAM, 1MB Flash Connectivity Bluetooth 5-ready multiprotocol radio Bluetooth 5 data rate support: 2 Mbps, 1 Mbps, 500 kbps, 125 kbps 104 dB link budget for Bluetooth low energy -96 dBm sensitivity for Bluetooth low energy Programmable output power from +8 dBm to -20 dBm NFC-A tag on chip Single-ended antenna output (on-chip balun) I/Os USB – Full-speed 12 Mbps USB controller SPI up […]

Nordic Semi Announces nRF51 DK Arduino Compatible Board, and nRF51 Dongle with Bluetooth Smart, ANT, and 2.4GHz Connectivity

Nordic Semiconductor has introduced two new low cost development boards supporting Bluetooh LE, ANT/ANT+, and proprietary 2.4GHz applications based on their nRF51 series SoCs: nRF51 DK, an Arduino UNO Rev.3 compatible board that can be used for various IoT and wearables applications, and nRF51 Dongle, a USB dongle to connect to a PC or board, which can be useful for packet sniffing and BLE peer connection. nRF51 DK Development Board Key features listed for the board: SoC – Supports nRF51822 (BT/2.4Ghz) and nRF51422 (BT/ANT) SoCs based on an ARM Cortex M0 processor, with 128kB or 256kB flash memory, and 16kB or 32kB RAM. Connectivity Bluetooth Smart, ANT/ANT+ and 2.4GHz proprietary Integrated PCB antenna Connector for RF measurements Expansions Headers Arduino Uno Rev. 3 compatible connector for use with 3rd party shields All I/O and interfaces available via connectors Debugging Segger J-Link OB and ARM CMSIS-DAP Program/Debug supported Support for Program/Debug […]

Vigekwear is a Modularized, Open source, Wearable BLE Development Kit (Crowdfunding)

[Update: Atomwear has been renamed to Vigekwear due to (Intel’s) copyrights infringement]. Giayee is a company mainly manufacturing Android tablets, thin clients, and mini PCs, but their latest product, called Atomwear, is a Bluetooth Low Energy (BLE) development kit based on Nordic nRF51822 chipset that comes with various modules such as battery charger, accelerometer, gyroscope, OLED display, heart rate monitor, etc… which connect together via 24-pin connector on a standard rigid baseboard or a flexible printed circuit (FPC). All modules are connected via the same 24-pin connector with power, I2C, SPI, UART, ADC, and GPIOs signals. The baseboard and FPC both contain 6 such connectors connected in parallel for up to 6 modules, and two baseboard can be connected together via a bridge circuit to accept more modules. The minimum configuration is with a BLE MCU module, and a power module. The different boards and modules are listed as follows: […]

$34 BLEduino Bluetooth 4.0 Low Energy Arduino-Compatible Board

After RFDuino, here’s another tiny low cost Bluetooth 4.0 SMART development board compatible with Arduino. BLEduino board is the merger of Arduino Leonardo and Bluetooth module, features Atmel ATmega32u4 MCU, Nordic Semi nRF8001 for BLE, and includes an on-board USB programming interface. Key features of BLEduino board: MCU – Atmel ATmega32u4 @ 16 MHz with 32 KB flash, 2.5 KB SRAM, and 1 KB EEPROM Power Supply – 5V.  Onboard 5V & 3.3V regulators I/O: 21x GPIO Pins 6x PWM Channels 12x Analog Input Channels Serial Communication – UART, SPI, I2C LED – RX/TX for serial communication, LED for Bluetooth connectivity Bluetooth – Version 4.0 with Low Energy sypport via Nordic Semi nRF8001. Expected range: at least 24 meters Dimensions – Around 22.8 x 43.2 mm Kytelab, the company behind BLEduino, also provides “Shield-Shield”, a baseboard that translates BLEduino’s pin layout into the traditional Arduino layout, and allows you to […]

Bluetooth Versions Walkthrough, and Bluetooth 4.0 Low Energy Development Resources

I’ve seen more and more Bluetooth 4.0 LE devices in the last few months including RFDuino, Wimoto Motes, TI SensorTag, and Scadanu Scout, so I thought it would be good to write a bit about Bluetooth. First, I’ll write about the different version of Bluetooth, since I was still confused with the practical implications between the versions, and then I’ll show some development kits and software resources to play around and/or develop Bluetooth 4.0 LE applications both on devices and hosts. Bluetooth Versions Bluetooth v1.0 and v1.0B The Bluetooth 1.0 Specification was released in 1999, and according to an entry in Wikipedia, 1.0 and 1.0B devices had many issues, mainly interoperability issues. You won’t find any Bluetooth 1.0 device today. Bluetooth v1.1 Bluetooth v1.1 was ratified as IEEE Standard 802.15.1-2002 in 2002. It fixed many issues found in the previous specifications, added the option to use non-encrypted channels, as well […]

$19 RFDuino is a Coin-sized Bluetooth Arduino-compatible Board

RFDuino is a tiny board, about the size of a coin, powered by Nordic nRF51822 Cortex M0 SoC including bluetooth 4.0 LE support, and software compatible with Arduino UNO and DUE board, so you can just use Arduino sketches with the board. Bluetooth allows it to communicate with your smartphone (iPhone for now, but Android support is coming) to control motors & relays, monitor sensors, turn LEDs on/off, and more. Key features of RFDuino board: MCU – Nordic nRF51822 Cortex M0 @ 16 MHz Memory –  16 KB on-chip SRAM Storage – 256 KB on-chip Flash Connectivity – Bluetooth 4.0 Low Energy built in MCU GPIO – 7 pin software configurable as digital IO, analog ADC, SPI, I2C, UART and PWM.  The company currently offers several stackable shields for RFDuino including battery shields (1x AAA, 2x AAA, and CR2032 coin battery), a servo shield, a USB shield, a prototype shield […]