Project

General

Profile

Resolved: Jeenode won't start!!!

Added by dofami over 7 years ago

Hi there,
I finally decided to solder on one of my Jeenode v6 I purchase some time ago.
It is my first attempt in the jeenode world, but not in the arduino.
I have assembled it without any problem (from my point of view), but when I want use it, it does not work well.

First I am using a Sparkfun FTDI Basic 5v. I tried it as is, then with the 3v3 jump; nothing happens.
What seems me wired, it is the two LEDs TX an RX steady bright as long as the USB cable is plugged.

I found a topic on the forum with some physical check to do with a meter, but I am not sure that it is for the V6 Jeenode.
Can you put it in a clear way for me ?

It is quite difficult for me to figure out what is wrong.
I don’t think that my soldering are bad.
Any ideas ??

IMG_1063.JPG (699 KB) IMG_1063.JPG FTDI 5v - 3v3 jumper
IMG_1062.JPG (909 KB) IMG_1062.JPG TX-RX LED
763
764

Replies (20)

RE: Jeenode won't start!!! - Added by dabbishaw over 7 years ago

I’ve been using the Sparkfun FTDI basic without any problems. I just treat the Jeenode like its an Arduino UNO and all is well, (although you can experiment at running it at 8mhz.)

From the picture you posted it appears like you soldered all of the RFM12b radio connections. Not all of these need to be soldered. This picture shows the important pads.

Note that on the antenna side only the middle pad is left un-soldered.

TBH I don’t know if that would be enough to cause an issue or not.

Personally, I’d be inclined to do the following.

  1. Test the FTDI adapter with a known good Arduino.
  2. Unsolder the RFM12B and re-test. (the Jeenode will work without it, enough at least that you see in the serial window that the default sketch starts. Don’t forget they come pre programmed.)
  3. Go over all of the solder joints again with the soldering iron, just enough to reflow the solder. Not long enough that you burn out the gold contacts though.

If you can post a couple of clearer photos front and rear we might be able to see if there is anything else to suggest.

Oh and did you align the long pin on the capacitor with the hold marked with +?

RE: Jeenode won't start!!! - Added by JohnO over 7 years ago

Desoldering the RFM12B is not recommended - almost always ends in destruction.

RE: Jeenode won't start!!! - Added by JohnO over 7 years ago

Could you check that your ATMega328 chip has a bootloader by switching with and equivalant working Arduino.

RE: Jeenode won't start!!! - Added by dabbishaw over 7 years ago

I’ve de soldered one once without problem. But I’d take JohnO’s caution as he’s got way more experience than me. .

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

First of all, thank you for your comments. I was pretty lost with my problem.
I am sure the capacitor is in the right way.

I would be happy to test the FTDI, but I have nothing to test with. My arduino have an USB port, so…
I am lost with the logical voltage and the other one. Could anybody may be clear about witch voltage on with leg of the FTDI?

I think that the safest and fastest way to proceed, is to re-check my solder joins.
Here some more pics.

Do you have any leads to check with a multimeter ?

RE: Jeenode won't start!!! - Added by Rzbo over 7 years ago

I think that D1 or SJ3 (jumper) is missing = jeenode not powered
Moreover, your solder technique needs to be improved, lot of solder point are not ‘clean’ ;-)

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

You are right; I need to improve my solder joins and I will ! :o)

I did not know that the D1/SJ3 jumper must be soldered.
Thanks so much!

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

It seems to have more than one issue.
I rechecked all my solder joins and close the D1/SJ3 jumper.

The situation is still the same: both FTDI leds are steady bright all the time (with the Jeenode connected).
When I open the serial screen, nothing appears.

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

dabbishaw wrote:
> I’ve de soldered one once without problem. But I’d take JohnO’s caution as he’s got way more experience than me. .

Do you have the same behavior of the FTDI LED’s when connected ??

RE: Jeenode won't start!!! - Added by JohnO over 7 years ago

Disconnect your FTDI from the JeeNode then link RX to TX on the FTDI using a piece of wire. Open up a terminal program and connect to the FTDI serial port. When you type into the terminal program you should see it echoed back to you. Remove the wire between RX & TX and type again - the echo should now have stopped. If you get echo and then the echo stops I think for FTDI is good.

RE: Jeenode won't start!!! - Added by JohnO over 7 years ago

I’m not with my kit right now but I think the test will show that the LEDs only flash when there are high/low transitions. I think the idle condition is LEDs off. I think we need some close up pictures - has the ATMega chip seated into the socket nicely? No bent pins?

RE: Jeenode won't start!!! - Added by dabbishaw over 7 years ago

My LEDs are off when idle.

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

I found the hardware check [[http://forum.jeelabs.net/comment/3728\#comment-3728]].
I pass all the check with the right values.
Keep on searching… :o/

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

dabbishaw wrote:
> My LEDs are off when idle.

Thanks for your feedback.

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

Everythings looks fine with the ATMega legs.
I will try the RX-TX trick.

I have the feeling that is not the FTDI board and not the ATMega chip.
I thing I am going to try to power the board with a battery (BATT port) and stick a LED in port 9 (PB1).
This way I can see if the ATMega is running the RF12demo or not.

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

Hi guys,
Still me and still does not work.

I recheck the values of the hardware with my multi meters, and it appears that the following condition fails :
“Now keep your meter on the bottom leg of the resistor and check its connection to pin 1 (lowest left) of the ATmega chip. Again it should be 0 ohms.”

Quoted from here

Can anyone tell me what does it mean and how that could be fixed ??

Thanks!

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

dofami wrote:
> Hi guys,
> Still me and still does not work.
>
> I recheck the values of the hardware with my multi meters, and it appears that the following condition fails :
> “Now keep your meter on the bottom leg of the resistor and check its connection to pin 1 (lowest left) of the ATmega chip. Again it should be 0 ohms.”
>
> Quoted from here
>
> Can anyone tell me what does it mean and how that could be fixed ??
>
> Thanks!

Never mind, my multi meters is almost dead, and giving me random reads.

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

After talking with the support, I decided to buy another FTDI board; the USB BUB from Jeelabs.
I am waiting for my package and I will post the result.

RE: Jeenode won't start!!! - Added by dofami over 7 years ago

I got my USB BUBII from Jeelabs.
I put it together. I connect everything, I plug the USB and … nothing !
The guys of Jeelabs, sent me another ATMega to try, So I remove mine and replace it with the loan.
Plug the USB and … it works !

Apparently, my FTDI Basic from Sparkfun burn my ATMega. (sad)

So good and bad news !
Thanks to everyone who tried to help me!

RE: Jeenode won't start!!! - Added by JohnO over 7 years ago

It might just be the bootloader missing from the ‘burned’ ATMega.

    (1-20/20)