GBoard

Gboard is a unique Arduino board which features a SIM900 GSM/GPRS module, an XBee socket, nRF24L01 module interface and an ATMega328P controller. This board will add wireless XBee / nRF24L01 control as well as GSM/GPRS connectivity to your projects. It’s great for anything from home automation to robot control. The possibilities are endless!

Gboard can be used as a GSM/GPRS data transfer or wireless communication project development platform. Gboard support wide range power supply and Micro SD for mass storage. There are some 3pin electronic brick/ sensor brick interface breakout on board, it offer an easy way for a quick prototyping. The board requires FTDI basic board to upload sketch, you can use our Foca board to do it. Gboard can be powered by a mini USB, power Jack.

UART Setting Jumpers

The SIM900 module and XBee module communicate to ATMega328 through UART. They cannot be used with the same port at the same time, so there are two UART setting jumpers to configure the UART communication. The figure of UART setting jumpers is as below.

D0 and D1 are hardware UART ports of Arduino. D2 and D3 are digital GPIO of Arduino. There are two configurations to set the UART communication:

Hardware UART to SIM900,Software UAR to Specific: ST D0(Hardware Rx of Arduino),SR D1(Hardware Tx of Arduino),XT D2(Software Rx/Tx of Arduino),XR D3(Software Rx/Tx of Arduino)

Software UART to SIM900,Hardware UART to Specific: XT D0(Hardware Rx of Arduino),XR D1(Hardware Tx of Arduino),ST D2(Software Rx/Tx of Arduino),SR D3(Software Rx/Tx of Arduino)

Arduino pin SIM900 pin Enable

D6 PWR High level Active

D7 RESETHigh level Active

Software

With embedded bootloader, Gboard is easy to use by Arduino IDE through Foca series. ISP of Atmega328 is broke out for download firmware easily.

Specification

Microcontroller ATMega328P

Max Frequency 16MHz

RAM Capacity 2K

FLASH Capacity 32K

External Resources :

Onboard SD socket