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compatible with 3
Transistor
VCC_MCU when the SIM900A module and 5V TTL level communication
Main Chip: LM393
can be directly after purchase and single-chip computer connection
Arduino Pro Mini ATMEGA328P 5V/16M soldering compatible with 3The Arduino Pro Mini is a microcontroller board based on the ATmega328. It has 14 digital input output pins (of which 6 can be used as PWM outputs), 6 analog inputs, an on board resonator, a reset button, and holes for mounting pin headers. A six pin header can be connected to an FTDI cable or Sparkfun breakout board to provide USB power and communication to the board. Specifications: 8 analog input port: A0 ~ A7 A pair of TTL level serial port
US$ 12.50
US$ 30.00
US$ 16.50
