Replies to This Discussion

Permalink Reply by Ulf on May 3, 2009 at 9:02am

hi all,

I'm not having RC-receiver connected.
I just hook up the power by Gnd/VCC as in the Fig. The servos get 5V and they move, but very strange (ticking a while instead of moving 45 degrees as in the code ran out of the box).
Or does the multiplexer does not work approriate without having something attached to CTRL/IN1/2/3?

Chris, by jumpering to BATT you mean putting a bit of solder on the BATT/SVRO pads and connect them?

• ▶ Reply

Permalink Reply by David Low on May 3, 2009 at 9:11am

@Ulf: sorry for off-topic, but the way u plug in the sparkfun ftdi board is weird.
shouldn't it be like this?
http://diydrones.com/profiles/blogs/how-to-connect-a-sparkfun-ftdi

• ▶ Reply

Permalink Reply by Ulf on May 3, 2009 at 9:27am

Ups..sorry, of course. just plugged it quickly in for the image, so thats not the issue.

• ▶ Reply

3D RoboticsPermalink Reply by Chris Anderson on May 3, 2009 at 9:58am

That is a kind of weird setup.

If you're going to use the BATT pins, you need to unsolder the SVRO side of solder bridge on PSEL and instead solder it on the BATT side.

But why would you want to do that if you're going to use it with RC equipment? And why not just test this with RC equipment as it was designed? I'm confused why you're making it so complicated by deviating from the instructions.

• ▶ Reply

DeveloperPermalink Reply by John Arne Birkeland on May 3, 2009 at 12:14pm

I could be wrong, but I think the current failsafe design require an active signal on CTRL for the servo output to work.

• ▶ Reply

AdminPermalink Reply by Thomas J Coyle III on May 3, 2009 at 1:06pm

Chris,

John Birkeland is correct about the two upper left hand pins being attached to the servo rails as I tried it myself and observed the correct led pattern for a factory fresh board.

I know that you stated a while back that the power pins in the upper left hand corner were not connected to the processor, but this does not seem to be the case with the blue boards.

Therefore, Ulf has a problem with his board as powering the board from either the upper left hand corner pins or the servo pins should result in the correct led pattern for a factory fresh board.

Also, looking at the way that Ulf has his servo hooked up to the servo out pins, it looks like the servo connector is reversed as the black wire (gnd) appears to be inboard and not outboard as it should be if plugged in correctly.

Regards,
TCIII

• ▶ Reply

Permalink Reply by Reto on May 3, 2009 at 1:49pm

I agree with Thomas. Servo seems connected as wrong as FTDI.

• ▶ Reply

3D RoboticsPermalink Reply by Chris Anderson on May 3, 2009 at 2:33pm

Tom, you're right on both counts. I actually said that the power pins in the FTDI row (that's BLK and the VCC two pins above it) are not connected to the processor. The VCC and GND at the top are connected, as you observed, but we don't recommend you use them because we're reserving them for the expansion board.

Well spotted that he has his servos plugged in backwards. You wouldn't believe how often we see this. Even though it's plainly marked on the board, it's the number one cause of tech support problems. I'm sure this is true across the RC world, thanks to the no-polarity of RC connectors, but it's stunning to see it here, where we have pretty sophisticated users.

• ▶ Reply

Permalink Reply by Ulf on May 3, 2009 at 3:01pm

Hi,
i guess i was a bit too quick with my foto demo. now i got a video:
Video
(The Video is mirrored)
running the 2.1-code out of the box.
Can anyone reproduce this? Is this normal?
I'm still waiting on the remote and i wanted just test the board if it's working well. i thought it should work using this setup from scratch, I tested the servorail to vcc and gnd and it is connected.

• ▶ Reply

3D RoboticsPermalink Reply by Chris Anderson on May 3, 2009 at 3:24pm

Ulf, I don't see anything out of the norm. Please just wait until you have the standard setup and check back with us then. So far your unwillingness to do things as recommend and your photo errors have just wasted people's time.

• ▶ Reply

▶ Reply to Discussion

• ‹ Previous
• 1
• 2
• Next ›
• Page