2. Soldering the headers Before using your click boardTM, make sure to solder 1x8 male headers to both left and right side of the board. Two 1x8 male headers are included with the board in the package. GSM2 click 2 1 3 4. Essential features 1. Introduction GSM2 click is an accessory board in mikroBUSTM form factor. It's a compact and easy solution for adding a GSM module to your design. It carries a Quectel M95 FA GSM module, audio connector, SIM card socket as well as an SMA antenna connector. GSM2 click communicates with target board microcontroller via mikroBUSTM UART (Tx, Rx), PWM, INT, AN, RST and CS lines. The board is designed to use 3.3V and 5V I/O voltage levels. LED diode (GREEN) indicates the presence of a power supply. Turn the board upside down so that the bottom side is facing you upwards. Place shorter pins of the header into the appropriate soldering pads. Turn the board upward again. Make sure to align the headers so that they are perpendicular to the board, then solder the pins carefully. 3. Plugging the board in Once you have soldered the headers your board is ready to be placed into the desired mikroBUSTM socket. Make sure to align the cut in the lower-right part of the board with the markings on the silkscreen at the mikroBUSTM socket. If all the pins are aligned correctly, push the board all the way into the socket. GSM2 click with its Quectel M95 FA IC is ideal for mobile devices. The module is a quad-band GSM/GPRS engine that works at frequencies of GSM850MHz, GSM900MHz, DCS1800MHz or PCS1900MHz with 85.6 kbps GPRS data transfer. It supports internet service protocols, such as TCP/IP, UDP, FTP and PPP. click BOARD TM www.mikroe.com GSM2 click manual ver 1.01b 0100000076521 CN1 ANTENNA 5. Schematic VCC Vgsm 8. Code examples VCC R1 3K3 R2 3K3 RI !PWRKEY Q4 BC846 PWRKEY R12 1K R14 100K Vgsm VCC !STAT 12 NET_LED 13 14 15 RXD TXD CTS RTS STAT TXB0106 100nF AGND SIM_VCC SIM_RST SIM_CLK SIM_IO 1 2 3 7 SIM_GND SIM_CLK SIM_IO SIM_RST SIM_VCC 26 25 24 23 22 21 !RI R4 100K RI DCD RTS CTS TXD RXD 1K !RTS !CTS !TXD !RXD 100nF 10uF E5 C7 470uF/10V E4 470uF/10V E3 100nF C6 1 Left Audio E1 10uF C9 33pF 33pF 2 Right Audio E2 4 3 2 .com CN3 1 9. Support ST-328B-3 AGND MiC- 8 4 5 CD1 CD2 GND 4 Pin Number Description R7 C2 SIM_GND E6 10uF AGND +5V LD1 PWR R6 100K R10 2K2 MIC+ EAR+ C1 2.2uF 3 2 3 Microphone 1 4 Common/GND U4 MCP1826 GND FP1 FERRITE BEAD E7 10uF Vgsm R8 100K R11 10K R15 470 25.4 mm / 1000 mils mils LENGTH 64.15 2525 WIDTH 25.4 1000 HEIGHT* 16 630 64.15 mm / 2525 mils * without headers MikroElektronika offers free tech support (www.mikroe.com/support) until the end of the product's lifetime, so if something goes wrong, we're ready and willing to help! C16 2.2uF 7. SMD jumper 6. Dimensions mm Once you have done all the necessary preparations, it's time to get your click boardTM up and running. We have provided examples for mikroCTM, mikroBasicTM and mikroPascalTM compilers on our Libstock website. Just download them and you are ready to start. VDD_EXT +3V3 R13 2K2 +5V J1 Q2 BC846 R5 !STAT VDD_EXT U3 VCC RST CLK IO 31 30 29 28 27 SIM_CARD 16 15 14 13 12 11 10 9 B1 VCCB B2 B3 B4 B5 B6 GND SPK1SPK1+ LOUDSPKLOUDSPK+ PWRKEY EMG_OFF 33pF C5 C8 A1 VCCA A2 A3 A4 A5 A6 OE 33pF C4 !RXD !TXD !CTS !RTS !STAT VCC U2 TXB0106 1 2 3 4 5 6 7 8 EAR+ !PWRKEY 33pF C3 VDD_EXT !RI QUECTEL M95 6 7 8 9 10 11 MIKROBUS DEVICE CONN. SIM_GND SIM_CLK SIM_IO SIM_RST SIM_VDD 6 C15 33pF AGND MIC2+ MIC2MIC1+ MIC1- SHDN VIN GND VOUT ADJ C14 10pF 1 2 3 4 5 1K 1 2 3 4 5 C13 33pF GND GND VBAT VBAT VRTC C11 33pF C12 10pF NC NC NC VDD_EXT DTR MIC- C10 10pF LD3 Q1 BC846 R3 NET_LED 16 17 18 19 20 MIC+ NC NC R9 1K PWM INT TX RX SCL SDA +5V GND 41 42 AN RST CS SCK MISO MOSI +3.3V GND RI CTS TXD RXD GND ANT GND GND +5V STAT NETLD RXDdbg TXDdbg +3V3 STAT PWRKEY RTS 36 35 34 33 32 40 39 38 37 LD2 U1 QUECTEL M95 FA There is one zero-ohm SMD jumper J1 used to select whether 3.3V (default) or 5V I/O voltage level is used. Note that, regardless of the logic level, the module requires a 5V power supply in both cases. 10. Disclaimer MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document. Specification and information contained in the present schematic are subject to change at any time without notice. Copyright (c) 2015 MikroElektronika. All rights reserved.