Parts listArduino UnoSparkfun RS-232 Shifter
- System unable to send out an SMS
Wavecom GPRS ModemConnections
USB Powered for Arduino
RX (Shifter) - TX (Arduino)
TX (Shifter) - RX (Arduino)
GND (Shifter) - GND (Arduino)
VCC (Shifter) - 5V (Arduino)
My connection is exactly like this video Query
- How much voltage is needed to be pumped into the RS-232 Shifter VCC
- Do I have to use an external power source for the arduino like the video?
Help needed urgently! Appreciate it very much and thanks a million in advance for looking thru this problem of mine.