GSM interfacing | Microcontroller › AVR › USART:ATMEGA8535 › GSM interfacing February 8, 2011 at 5:27 am #5456 dagakshayParticipant learn serial port interfacing from here: http://www.engineersgarage.com/embedded/avr-microcontroller-projects/usart-serial-transmission-circuit and how to interface GSM from: http://www.engineersgarage.com/microcontroller/8051projects/gsm-interface-8051-microcontroller-circuit-code http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code http://www.engineersgarage.com/microcontroller/8051projects/interface-gsm-module-8051-microcontroller-circuit-code