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ArduCopter User Group

Discussion group for ArduCopter users

Members: 3141
Latest Activity: Jul 3

Discussion Forum

The throttle on my pixhawk 2.4.8 does not work

Started by Oscar Renato. Last reply by looninho Jul 1. 6 Replies

Hello, I recently had a problem with a pixhawk 2.4.8 board, and all channels work, except channel 3 of the throttle, I have already tried several things and even then it does not work, try to go back…Continue

Data transfer from ARDUINO to PIXHAWK through serial or I2C

Started by Ioannis Jun 12. 0 Replies

Dear allI need your help in the following simple(?) issue: I have connected through I2C two ARDUINOs (a master MEGA and a slave NANO). Using the following code they communicate correctly:For the…Continue

V-Shaped Hexacopter

Started by David Dalmau Lopo. Last reply by David Dalmau Lopo Apr 23. 3 Replies

Hello everyone,I want to manufacture a frame for a V-shaped hexacopter, to be used in industrial inspection functions with two cameras.Can you tell me if it is possible to configure arducopter 3.5…Continue

Tags: Hexa, V

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Comment by Cala on June 5, 2016 at 9:50am

Make a cable as Tony describe, I removed the little pins from the connector and change their place

Comment by dongfeng on June 5, 2016 at 9:03am

How do you do!

Comment by Cala on May 29, 2016 at 3:41pm

Yes, that the correct position, mine is working now like that. Another thing that don't sound right is a red wire in SCL and a black one in vcc.

Comment by Tony Wall on May 29, 2016 at 3:16pm
Comment by Tony Wall on May 29, 2016 at 3:11pm

The connection cable provided with the GPS is straight, no cross-over of TX/RX (just the whole connector is up/down), but as the motherboard of the GPS (I opened it) is not labelled we don't know that the RX goes to RX as Cala suggests. The only documentation is on the PixFalcon side, so the GPS obviously has TX and RX pins the other way around as Craig says, else it wouldn't work. Both of you are right, no mistake has been made by the Holybro manufacturer besides not documenting the PixFalcon peripherals (shame because the rest of the docs and web site are nice and clean).

On the GPS side we have then, from left to right: 

1 = GND (pin 6 on FC)

2 = TX (RX on FC)

3 = RX (TX on FC)

4 = VCC +5V

5 = SDA

6 = SCL (red, pin 1 on FC)

Sound right?

Comment by Cala on May 29, 2016 at 2:22pm

Yes, but labels were reverse in pixfalcon vs gps, rx with Rx and Tx with Tx, the easier way is if this guys stamped the board as many do, they have lot of space. 

Comment by Craig on May 29, 2016 at 1:55pm

TX and RX are always reversed. TX goes to RX and RX goes to TX. That's how serial devices communicate.

Comment by Cala on May 29, 2016 at 1:18pm

Finally I found the gps in Gervais post, reverse Tx and Rx and works :D http://www.rcgroups.com/forums/showthread.php?t=2576614 in Pixfalcon they are reversed :(

Comment by Cala on May 29, 2016 at 1:07pm

No GPS, the green light work, horrible that any stamped references, any documentation, bad product. :(

Comment by Cala on May 29, 2016 at 7:47am

Thank's Tony, perhaps devs take in consideration your intersting sugestions in gihtub https://github.com/ArduPilot/ardupilot_wiki/pulls

 
 
 

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