Gboard Pro 800

Overview

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.

Note:

• 1. There is a USB connector on the board for debugging or firmware uploading 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.

Specifications

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

Hardware

Note:

• 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.

Indicators

1.PWR

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

2.Status

Status indicator：Normally ON indicates SIM800 already powered on.

3.NET

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.

Buttons

1.Reset

ATmega2560 reset button：press the button to reset ATmega2560。

2.Sim_rst

SIM800 reset button：press the button to reset SIM800。

3.Sim_pwr

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).

Pinmap

• 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	-	-
39	LED-	GND	GND
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