Hello
I read another thread that ended on 03/10 in which the OP found that by re-soldering two joints his issue was solved. I'm using an Arduino UNO to install the sketch I'm getting messages I'm not understanding. Several weeks ago, I didn't have any trouble uploading the same sketch to another ATMega 328 with bootloader from from Sparkfun. These last two days have been unhelpful in so far as getting my sketch uploaded.
My Arduino was set to COM4 when I opened it later, and again today. I was getting this message:
Serial Port COM4 already in use. Try quitting any programs that may be using it.
And then this appears in the window:
Binary sketch size: 2,748 bytes (of a 32,256 byte maximum)
processing.app.SerialException: Serial port 'COM4' already in use. Try quiting any programs that may be using it.
at processing.app.Serial.<init>(Serial.java:171)
at processing.app.Serial.<init>(Serial.java:77)
at processing.app.debug.Uploader.flushSerialBuffer(Uploader.java:77)
at processing.app.debug.AvrdudeUploader.uploadViaBootloader(AvrdudeUploader.java:174)
at processing.app.debug.AvrdudeUploader.uploadUsingPreferences(AvrdudeUploader.java:67)
at processing.app.Sketch.upload(Sketch.java:1671)
at processing.app.Sketch.exportApplet(Sketch.java:1627)
at processing.app.Sketch.exportApplet(Sketch.java:1599)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2380)
at java.lang.Thread.run(Thread.java:619)
processing.app.debug.RunnerException: Serial port 'COM4' already in use. Try quiting any programs that may be using it.
at processing.app.debug.Uploader.flushSerialBuffer(Uploader.java:101)
at processing.app.debug.AvrdudeUploader.uploadViaBootloader(AvrdudeUploader.java:174)
at processing.app.debug.AvrdudeUploader.uploadUsingPreferences(AvrdudeUploader.java:67)
at processing.app.Sketch.upload(Sketch.java:1671)
at processing.app.Sketch.exportApplet(Sketch.java:1627)
at processing.app.Sketch.exportApplet(Sketch.java:1599)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2380)
at java.lang.Thread.run(Thread.java:619)
"Okay, well, now what" I asked myself. Then, when I reset Arduino 1.0.3 to COM3. I receive this:
Done Uploading
Binary sketch size: 2,748 bytes (of a 32,256 byte maximum)
avrdude: stk500_getsync(): not in sync: resp=0x30
I've tried with Blink, too. I could upload both Blink, and my custom sketch to the first chip several weeks ago, but I have 4 more here that can't, although Blink did upload to one of the chips. Uno's LED is flashing on and off in 2 second cycles. I'm powering the UNO through the USB.
Thanks for your assistance.
Peace,
Dave
ETA:
There is one port listed in my device manager:
Prolific USB-to-Serial Comm Port (COM4)