I am trouble uploading sketches and communicating with standalone ATmega328 using CP2102 USB-Serial Converter module (from China). The Pin Configuration is :
USB-Converter Pin: .......... Atmega328 RX Pin 3 TX Pin 2 DTR Pin 1 via 100nf Capacitor 5V Pins 7, 20, 21 Gnd Pins 8, 22
Atmega328 has 16Mhz Crystal with a pair of 22pf attached as standard.
I have tried different combinations but all failed .. Following is the result: avrdude: stk500_getsync(): not in sync: resp=0x00
the Arduino IDE is set to : Board: Arduino Nano / 328 Programmer: AVRIsp mkll
Atmega328 was loaded with Boardloader earlier and a blink sketch was uploaded using ArduinoISP method given on Arduino's Website. With normal power, the Pin 13 blinks Led normally. But new sketch is not getting through.
Please help ...