SIM800A_ Nano development board is a high-performance industrial-grade GSM/GPRS module with a rich interface, perfect function, stable operation, strong anti-interference, high integration of peripheral circuits and small size. It is especially suitable for various fields that require voice/SMS/GPRS data services, such as smart home, intelligent collection system, remote monitoring and so on.
Support dual-band GSM/GPRS (900MHz / 1800MHz)
Support RS232/TTL serial port (supports 3. 3V/5V system)
Support 5V- 18V power supply (9V1A power supply is recommended)
Reserved voice interface
Reserve SMA and IPX interfaces
Support SMS service MT/M0/Text/PDU mode
Support TCP/UDP communication, FTP/HTTP service
Support Nano SIM card
PWR: Positive power supply
RI: RI output pin
RES: reset foot
S+: horn positive
S-: horn negative
GND: power ground
BAT: Lithium battery power supply interface
EN: Power enable, default high
VCC_IN: external power input
TXD: TTL serial output
RXD: TTL serial input
V_MCU: Level matching interface
R_232: RS232 serial input
T_232: RS232 serial output
GPRS multi-slot class 12/10
GPRS m0bile station class B
Meet the GSM 2/2+ standard
– Class 4 (2W @900MHz)
– Class 1 (1W @1800MHz)
Controlled by AT c0mmands (GSM 07.07, 07.05 and SIMCOM enhanced AT c0mmand set)
Supply voltage: 3.4 ~ 4.4V
Low power consumption
Operating temperature: -40°C ~ +85°C
GPRS class 12: Maximum 85.6 kbps (downstream rate)
The CNC Shield v4 is made for the control of 3D printers, milling and engraving machines. This version of the shield has 1 motor driver less than its predecessor, but is more compact and has room for an Arduino Nano. This board has 3 sockets for the installation of stepper motor drivers such as the A4988. Only 2 channels per motor are required to control this motor. There is also a connection for 2 end-stop switches per motor.
The A4988 is a complete Microstepping Motor Driver with built-in translator for easy operation. The driver has a maximum output capacity of 35 V and ± 2 A. It can operate bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes.
Arduino Pro Mini is minimal design approach to Arduino. This is a 3.3V and 5V Arduino running the 8MHz bootloader. Arduino Pro Mini does not come with connectors populated so that you can solder in any connector or wire with any orientation you need. We recommend first time Arduino users start with the Uno R3. It’s a great board that will get you up and running quickly. The Arduino Pro series is meant for users that understand the limitations of system voltage (3.3V) and (5V), lack of connectors, and USB off board.
Arduino Uno is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53-R0), a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.. You can tinker with your Uno without worrying too much about doing something wrong, worst case scenario you can replace the chip for a few dollars and start over again.