Gboard Pro 800

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IM141125008 4.jpg

Gboard Pro 800 is a unique Arduino mainboard with SIM800 GSM / GPRS module, XBee socket, nRF24L01 + module interface, micro SD card interface, ITDB02 parallel LCD module interface, electronic brick interface and ATmega2560 chips, which can achieve wireless control via XBee, nRF24L01 + or GSM / GPRS with functions covering from smart home to remote control of robots to meet various needs of different projects.


  • 1. There is a USB connector on the board for debugging or firmware uploading to SIM800 module only.
  • 2. The serial interface (bootloader connection) is 3.3v, not the typical 5v as on many Arduino boards - anyone using an alternative to the Foca board must take note not to risk damage.

Attention: You can power the board through either the DC jack or the battery socket but NOT both at the same time. There is no Li-ion battery charger circuit on this board.

Go shopping Gboard Pro 800(IM141125008)


  • SIM800 is a quad-band GSM/GPRS module that works on frequencies GSM 850MHz, EGSM 900MHz, DCS 1800MHz and PCS 1900MHz.
  • SIM800 GPRS multi-slot class 12/ class 10 (optional) and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
  • One USB port can be used as SIM800 debugging and firmware upgrading
  • Support Bluetooth function
  • Support XBee and nRF24L01+ wireless control
  • Require FTDI basic board to upload sketch
  • Support various sensor bricks accessing
  • Support ITDB02 series TFT modules accessing


PCB size 131.0mm X 68.8mm X 1.6mm
Supply voltage 7~23V DC
Operating voltage 3.3V DC
Microprocessor ATmega2560
Indicators PWR,NET,Status,Test
Communication interfaces XBee,nRF24L01+,UART,IIC,ITDB02 LCD,micro SD

Electrical Characteristics

Parameter Min. Typical Max. Unit
Supply voltage 7 - 23 VDC
Input high voltage VH 3 3.3 3.6 V
Input low voltage -0.3 0 0.5 V
Average Current consumption - 100 500 mA
Peak Current consumption - - 2 A


IM141125008 - Gboard Pro 800.jpg IM141125008pic3.jpg


  • Baterry Socket: you can connect a Li-ion battery onto the socket to power the board up instead of DC external power supply, the input voltage is from 3.4V~4.4V.
  • Debug Port: debugging interface for SIM800 that you can upgrade firmware and debug software.



Power indicator:Normally ON indicates normal power supply to Gboard Pro 800.


Status indicator:Normally ON indicates SIM800 already powered on.


Network indicator:OFF indicates SIM800 does not work; ON for 64ms / OFF for 800ms indicates SIM800 did not find the network; ON for 64ms / OFF for 3000ms indicates SIM800 registered on the network; ON for 64ms / OFF for 300ms indicates GPRS communication.



ATmega2560 reset button:press the button to reset ATmega2560。


SIM800 reset button:press the button to reset SIM800。


SIM800 power button: if SIM800 is powered off, it will be powered on by keeping pressing the button (for more than 1s); if SIM800 is powered on, it will be powered off by keeping pressing the button (for more than 1s).


  • ITDB02 Parallel LCD Module Interface
Index of Interface Name of Interface Index of Arduino Pin of Atmega2560
1 GND - -
2 DB0 D37 PC0
3 5V - -
4 DB1 D36 PC1
5 NC - -
6 DB2 D35 PC2
7 LCD_RS D38 PD7
8 DB3 D34 PC3
9 LCD_WR D39 PG2
10 DB4 D33 PC4
11 LCD_RD 3V3 3V3
12 DB5 D32 PC5
13 DB8 D22 PA0
14 DB6 D31 PC6
15 DB9 D23 PA1
16 DB7 D30 PC7
17 DB10 D24 PA2
18 Touch_CLK D6 PH3
19 DB11 D25 PA3
20 Touch_CS D5 PE3
21 DB12 D26 PA4
22 Touch_DIN D48 PL1
23 DB13 D27 PA5
24 Touch_BUSY - -
25 DB14 D28 PA6
26 Touch_DOUT D3 PE5
27 DB15 D29 PA7
28 Touch_IRQ D2 PE4
29 LCD_CS D40 PG1
30 SD_MISO D50 PB3
31 NC - -
32 SD_SCK D52 PB1
33 LCD_RST D41 PG0
34 SD_MOSI D51 PB2
35 NC - -
36 SD_CS D53 PB0
37 LED+ 3V3 3V3
38 NC - -
40 NC - -
  • Electronic Bricks Interface
Index of Interface Name of Interface Index of Arduino Pin of Atmega2560
1 EB0 A0 PF0
2 EB1 A1 PF1
3 EB2 A2 PF2
4 EB3 A3 PF3
5 EB4 A4 PF4
6 EB5 A5 PF5
7 EB6 A6 PF6
8 EB7 A7 PF7
9 EB8 A8 PK0
10 EB9 A9 PK1
11 EB10 A10 PK2
12 EB11 A11 PK3
13 EB12 A12 PK4
14 EB13 A13 PK5
15 EB14 A14 PK6
16 EB15 A15 PK7
17 SCL D21 PD0
18 SDA D20 PD1
19 RX1 D19 PD2
20 TX1 D18 PD3
  • XBee Interface
Index of Interface Name of Interface Index of Arduino Pin of Atmega2560
1 XBee_DOUT D15(RX3) PJ0
2 XBee_DIN D14(TX3) PJ1
  • SIM800 Communication Interface
Index of Interface Name of Interface Index of Arduino Pin of Atmega2560
1 SIM800_TXD D17(RX2) PH0
2 SIM800_RXD D16(TX2) PH1
3 SIM800_RST D47 PL2
4 SIM800_PWR D46 PL3



Useful Link

GSM GPRS GPS Bluetooth for SIM800/808/900/908 Library