Testing the ATMEGA328-MCU (power via FTDI)
Required parts:
Placing the parts:
1*Pinheader
(6 Pins)
1*100 nF
1*10 kOhm
For the FTDI connector you can use either a straight or right-angled header, whichever you prefer. The pin header and capacitor are only
needed when using an FTDI cable or ISP header to program the ATMEGA328-MCU.
The resistor by the reset switch must be added even if you don’t intend to add a button. If it is not, then the Reset pin of the
ATMEGA328-MCU will hang and the microcontroller will constantly reset itself.
If you have an FTDI cable or a USB cable and a USB-BUB (e.g., from Jee-Labs), then you can now test the ATMEGA328-MCU.
Open the Serial-Monitor in the Arduino-IDE with the right settings (Serial-Port: something with „USB“ (The name is different on every system),
Board: Arduino Duemilanova; Serial speed in the monitor: 57600) then the MCU will output:
Qlockthree is initialazing...
... done and ready to rock!
The red power inicating LED will only light up using an external power supply.