Here is a brief comparison between RePhone Core Module (Xadow Core Module) and LinkIt ONE. It seems that Xadow core module is the little brother of LinkIt ONE, both of them are built in the same processor Mediatek MT2502. The slimmer black guy is more than a inherit of the lovely green guy, but, ahhh… something  more?

Xadow GSM +BLELinkIt ONE

 

 

Xadow GSM + BLE LinkIt ONE
Microcontroller MT2502 MT2502
MCU Core 32-bit ARM7EJ-STM RISC processor, 260MHZ 32-bit ARM7EJ-STM RISC processor
RAM 4 MB 4 MB
Flash Memory 16 MB 16 MB
Power Supply 3.3 ~ 4.2V(no SIM)/3.5 ~ 4.2V(with SIM) 3.7~4.2V Li-battery
Power Consumption 20mW/30mW/52mW @ standby(no radio)/standby(GSM)/standby(BT) 0.3~3mA DC Current Per I/O Pin
Communications GSM 850/900/1800/1900 MHz GSM 850/900/1800/1900 MHz
Communications GPRS Class 12 modem GPRS Class 12 modem
Communications Bluetooth BR/EDR/BLE(Dual Mode) Bluetooth BR/EDR/BLE(Dual Mode)
Communications None Wifi 802.11 b/g/n
Positioning None GPS/GLONASS/BEIDOU
Connectors 35 PIN Connector & 11 PIN Connector for Xadow Modules; JST 1.0 Connector for the battery Pin-out similar to Arduino boards, compatible with Grove 4-pin interface
Interfaces LCD, Audio, I2C, SPI, UART, and GPIOs etc  Digital I/O, Analog I/O, PWM, I2C, SPI, UART and power supply, Audio
Storage None SD Card, up to 32GB
Dimensions 25.37mm × 20.30mm / 1” × 0.8” 3.3 x 2.1 inches
Software Arduino IDE,Eclipse IDE,Lua,JavaScript,Building RePhone Applications on Mac OS X,RePhone APIs for Arduino,RePhone Kit Create Source Code,RePhone SDK Support Arduino‘s C-like language, Arduino Sketches,LinkIt ONE API,Windows XP,Vista7/8 /10 and Apple Mac 10.09 and 10.10

 

The quite obvious difference between Xadow GSM + BLE and LinkIt ONE  in HARDWARE is that Xadow GSM + BLE has less connectivities and Storage, except those interfaces. If you don’t need any more  functionalities for building up your project and take consider on the cost, Xadow Core module will be your preferable choice as it only integrates GSM/GPRS and BLE with an absolutely enhanting price - $19.

Xadow_GSM+BLE_Overview

Xadow-connector-Pin-definitions-06

Beyond the core module, there are 8 chainable add-on modules to extend features and functionalities  – Xadow 1.54’’ Touchscreen, Xadow Audio, Xadow GSM Breakout, Xadow LED 5×7, Xadow Basic Sensors, Xadow Duino, Xadow GPS v2 and Xadow NFC v2. You can use the plug-n-play  FPC cable to connect all these modules easily and flexibly, reducing your cycle on building wearables, comunications and IoT projects. I will introduce Xadow GPS v2, Xadow Duino and the related kits in my next article. In terms of LinkIt ONE, its 8-in-1 features is fit for development and evaluation when building up prototypes.

RePhone_Extesion_Pack_wiki_2

Another obvious difference in software  is that Xadow GSM + BLE provides much more richful development environment for wide range of software engineers, like Arduino IDE, Eclipse IDE, Lua and Javascript.

RePhone Development Environment

In comparison with LinkIt ONE, RePhone  provides a preferable way to prototype your wearables or Internet of Things(IoT) idea  because of the designing of open source modular hardware. The RePhone modules can be inserted as standard embedded modules in your finished product especially portable devices, or as the control unit. Whether you are building a smart control communication device for your dog, Smart Cookers or DJ gesture-controlling device, Xadow GSM + BLE is your personal starting line. Post your voice via #rephone on Twitter

RePhone Projects Diagram