I recently got my SparkFun Inventor’s Kit and cannot make it work. The software loaded OK from the Arduino web site and the hardware shows signs of working – lights blink. I am trying to load the Blink program. I get the error message “stk500_getsync”. Upon looking in SparkFun and Arduino forums, I see this is a problem shared by many.
I have two Mac computers. One I call Jim’s in this note, and the other Randy’s. Both fail to upload my program.
I select the Uno board. I get different error messages based on which Serial Port I select. I surmise the Arduino app is looking at the hardware in the computer it is running on to determine which options to present to the user for “Serial Port”.
The information below shows the verbose output describing the problem when I run on Jim’s computer and select /dev/tty.modem for the Serial port.
How can I fix this so I can get on with my real project??!! --jim hahn
iBook G4 Power Pc processor Mac OS 10.4.11 There is only one device plugged into the USB port: The Arduino board.
Jim’s computer, Arduino application, Tools->Serial Port
Eight options are presented for the Serial Port:
/dev/tty.modem stk500_getsync error /dev/cu.modem /dev/tty.usbmodem1B11 stk500_getsync error /dev/cu.usbmodem1B11 /dev/tty.Bluetooth-PDA-Sync /dev/cu.Bluetooth-PDA-Sync /dev/tty.Bluetooth-Modem /dev/cu.Bluetooth-Modem
The usbmodem1B11 options are presented only if the Arduino is plugged in.
Error messages from Jim’s computer. Using /dev/tty.modem
Binary sketch size: 1018 bytes (of a 32256 byte maximum) /Volumes/Arduino/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/avrdude -C/Volumes/Arduino/Arduino.app/Contents/Resources/Java/hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega328p -cstk500v1 -P/dev/tty.modem -b115200 -D -Uflash:w:/tmp/build7554345388825479034.tmp/Blink.cpp.hex:i
avrdude: Version 5.4-arduino, compiled on Oct 9 2007 at 11:22:08 Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
System wide configuration file is "/Volumes/Arduino/Arduino.app/Contents/Resources/Java/hardware/tools/avr/etc/avrdude.conf" User configuration file is "/Users/jimhahn/.avrduderc" User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/tty.modem Using Programmer : stk500v1 Overriding Baud Rate : 115200 avrdude: Send: 0   avrdude: Send: 0   avrdude: Send: 0   avrdude: Recv: 0  avrdude: stk500_getsync(): not in sync: resp=0x30 avrdude: Send: Q   avrdude: Recv: Q  avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
avrdude done. Thank you.
Macbook Intel processor Mac OS 10.5.8 There are many devices plugged into the USB besides the Arduino. These include a mouse, external disk, printer, hub.
Randy's computer, Arduino application, Tools->Serial Port
Only four options are presented for the Serial Port:
/dev/tty.Bluetooth-Modem /dev/cu.Bluetooth-Modem /dev/tty.Bluetooth-PDA-Sync /dev/cu.Bluetooth-PDA-Sync
Why only these four? None appear to be anywhere near correct.