Hello friends, I hope you all are doing great. Today, I am going to share the new SIM800C GSM Library for Proteus V1.1 . The SIM800C is SIMCom's quad-band GSM module, and many makers buy it on the small blue HW-537 board with a flexible antenna. This board has one habit that confuses many beginners: it stays switched off until its PWX power key is held LOW for more than a second. With this SIM800C Library for Proteus , you can learn that habit, send SMS, make calls and debug your GSM sketch on your PC, before you buy a SIM card or a 2 A power supply. Version 1.1 gives you two devices : SIM800C Simple , with a virtual smartphone next to the module, and SIM800C Advance , with a pop-up window that holds the phone plus four measured GSM test tools . The Arduino SIM800C Proteus demo has two Ard ...