Jee Labs Talk

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1. gregor
   

   I built the JeeNode v4 from the wireless starter pack. It appears to work: Upon connecting it via the USB-BUB the expected messages ("Available commands: etc...") are appearing. I can use the preloaded RF12demo and send and receive to/from the JeeNode.

   However, I cannot upload a new sketch to the JeeNode v4: I uploaded the "JeeNodeIoCommander" sketch to the JeeLink and the JeeNodeUSB without problems, but not to the JeeNode v4.

   Additional info:

   I'm trying to upload to the JeeNode v4 via USB-BUB (set to 3.3V), the JeeNode is not connected to an additional power source (this should work, correct?).

   I'm using Arduino IDE, "Board" is set to "Arduino Duemilanove or Nano w/ Atmega328"

   The upload command is "[path]avrdude -C[path]avrdude.conf -v -v -v -v -pm328p -cstk500v1 -P/dev/ttyUSB0 -b57600 -D -Uflash:w:[path]nodeIO.cpp.hex:i "

   Error messages (in the IDE and in a terminal): avrdude: serrecv(): programmer is not responding avrdude: stk500recv(): programmer is not responding

   Chances are I messed something up during soldering. Keeping in mind that the JeeNode v4 appears to work, can anybody give me hints to narrow down or localize the reason why an upload fails? For example, checking certain connections on the board, measuring voltage on specific points?

   Posted 28/07/2010 11:21:19

2. stef007
   

   I'm probably not the best person to help you. But better something then nothing;-) So your TX and RX lines seem to work. Another important line is the reset/DTR line. Try opening and closing the arduino IDE serial monitor several times. Each time the jeenode should reset and you should see the rf12 demo help output.

   Posted 28/07/2010 17:33:44

3. tor
   

   --deleted

   Posted 28/07/2010 20:22:32

4. tor
   

   Try reseating the CPU - fixed my identical problem. If not try swapping the CPU (if you have a spare)

   Posted 28/07/2010 20:24:55

5. tankslappa
   

   It could be that you've got one of the ATmega's that had the fuses set incorrectly from a month or two back. Luckily as you have a working JeenodeUSB there is an easy way to fix it.

   http://news.jeelabs.org/2010/06/09/repairing-a-faulty-atmega/

   Posted 29/07/2010 13:18:05

6. gregor
   

   Thank you all very much, I will try all suggestions and let you know. The strange thing is, I get exactly the same upload errors when there is no JeeNode attached to the USB-BUB.

   Posted 29/07/2010 16:33:38

7. tankslappa
   

   @gregor - Now that does sound like one of the misconfigured ATmegas!

   Have you had these for a few months by any chance?

   Posted 29/07/2010 17:25:29

8. gregor
   

   OK, here's what I tried: -Reseating CPU: no effect, and I have only this one 328.

   -Checking RX/TX/SCK etc with a multimeter: Connections appear to be OK, but that does not mean much.

   -@tankslappa: Got the kit two weeks ago...

   -Tried to repair/reset fuses following tankslappas link: Both JeeNodes behaved as expected/described in the link, no errors came up. And something has changed: The RF12demo is no longer working on the JeeNode v4 (the JeeNodeUSB, of course, now contains the "repair" sketch). But still, the "repaired" JeeNode v4 does not accept any uploads, error messages are the same as ever. But I think I'll take another look at this "fuses" thing, maybe try repairing once more.

   Also I'll try to hook up the JeeNodeUSB to the USB-BUB, just to make sure that the USB-BUB is working.

   So, thanks again everybody who responded, ideas are still welcome.

   Posted 30/07/2010 13:22:44