SIM800C schematic & PCB circuit

Description

SIM800C Schematic circuit

SIM800c PCB

hi

this board is SIM800C it have BLUETOOTH

in this board i used UFL Antenna

if you turn on without antenna Maybe ruined

bluetooth antena is on board

for supply you can use this board

SIM800C SUPPLY BOARD

warning:

before instal sim800 bord on supply board set voltage between 3.7 to 4.2 with time pot

i test this board and it works currect

when have a call RI LED in board turn on

for power up sim800 push PWRK for 3 second