debug2 raises without sensors connected

[Phin]

Hi,

I have a weird prob: i connected all sensors (bma020,wmp,baro,mag) and got debug2 running up.
Then i disconnected the sensors, just the Arduino on the board: still counting up(and down).

Any idea what could be wrong? checked the pins for shortcircuits with a multimeter, nothing.

Its this board:

[PatrikE]

debug2 shows I2C errors!
If there is no devices anwering on the calls there will be errors....

[Phin]

Ahhhh, thanks to make that clear.

I thought I found the problem, but doesnt seems like. I get the I²C errors also if I connect the sensors....

[Phin]

Here some pictures, maybe somebody else can see my big fail on this...

[Th0rsten]

Can't see any images but:
Try to connect 2k2 resistors from SDA and SCL to 5V and disable internal pull-ups.
viewtopic.php?f=8&t=986

Had the same problem:
viewtopic.php?f=15&t=1066

[kalle123]

Some of the pics are blurred and don#T help.

The wiring can not be seen clearly.

By the way, were are the sensors connected to the shield? I don't see the connection.

[Phin]

Yeah I know, phonecamera sucks. Need to load the DSLR-battery.

The connection to the MWC-board is done via a cable + plug and can be seen on the right side of:

[Phin]

Maybe somebody knows a convinient way to check those sensors?

[Th0rsten]

Connect one by one and if it's stop working you will know the problem.

[Phin]

I desoldered everything now and just connected the WMP to the Arduino and it still counts up and down on debug2
checked that I got the 2 2k2 resistors between 5V and SDA/SCL, too

cycletime is between 4900 and 6000

EDIT: oh man, can it be that the dev-version was the fault?

[PatrikE]

Download latest dev.
Comment all other sensors in config.

Start with only wmp.

If it works add a new sensor. solder and enable in config.
Add one sensor at a time.

[Phin]

No, I used the latest dev-version and the debug2 counted up. I image that I could save all the soldering if I would have used the 1.9 from the beginning

Now I try to calibrate the mag, but it still shows north at 90° (east)

[kalle123]

I told you yesterday in the German forum.

Take your "Dummylove" (Duemilanove)

Connect ONE sensor at a time to it. Look for a test sketch for checking that sensor.

(Like that one for the BARO http://www.ladyada.net/learn/sensors/bmp085.html )

After that, you know, that sensor is working or not.

Then, as PatrikE wrote, Start with only wmp.

[kalle123]

For testing the MAG, take your Duemilanove,

and connect the MAG sensor.

Here you find a small sketch.

http://www.timzaman.nl/?p=970&lang=en

You have to install the HMC library first.

[kalle123]

As I just found here

http://fpv-community.de/forum/showthrea ... &page=last

the problems are solved.

Would be nice, if you would tell it on all places, where you asked for advice!!

[Phin]

As I mentioned earlier it looks like it was no hardware-failure, the latest dev-release was the fault...

[Hamburger]

As I just found here

http://fpv-community.de/forum/showthrea ... &page=last

the problems are solved.

Would be nice, if you would tell it on all places, where you asked for advice!!

yes. But then that would take precious time...
we live and learn - different things