Introduction In the world of embedded systems and IoT (Internet of Things) development, the SIM800L module has become a staple. This tiny, quad-band GSM/GPRS module allows microcontrollers like Arduino, PIC, and STM to make calls, send SMS, and connect to the internet. However, testing firmware with a physical SIM800L can be expensive, time-consuming, and risky. One wrong wiring connection (e.g., applying 5V to the 3.8V tolerant pin) can instantly fry the module.
// SIM800L Simulation Test on Proteus // Sends "Hello Simulation" to a virtual phone number #include <SoftwareSerial.h> sim800l proteus library
However, always keep your expectations realistic. The library will not teach you about power sequencing, antenna ground planes, or signal dropouts. Treat it as a , not an electronic emulator. Introduction In the world of embedded systems and
// Send SMS to a simulated phone number (any string works in simulation) sim800.println("AT+CMGS="+1234567890""); delay(1000); One wrong wiring connection (e
// Use software serial for flexibility, or hardware serial (Serial1 on Mega) SoftwareSerial sim800(10, 11); // RX=10, TX=11
void loop() // Forward responses from SIM800L to Serial Monitor while(sim800.available()) Serial.write(sim800.read());