Problem during first connection

Hello,

I have just received my 3DR 915MHz kit from 3D ROBOTICS Shop, and I have met a problem.

Facts hereafter :

 

No problem with base module parametered from Mission Planner

    . detected on COM PORT ,

    . dialog opened at 57Kb, 

    . configurated as required in wiki (Bd=57 , AS=64 , ID=25 , Tx=20 , ECC=MAV=OPR=checked)

       => setting correctly saved

    . but green led flashing : no remote module detected !

 

Big problem with the remote module parametered from Mission Planner :

    . I have copied settings from base to remote,

    . but message "Failed to enter command mode"

    . its green led is always ON solid (even if base module OFF)

    . its red led is always flashing slowly (1 short beat per second)

    . idem with different rates or ID (4800Bd to 115KBd , Net ID 0, ...) 

 

I have tried to use 3DR Radio config software (V0.9) :

    . Connected with FTDI 5V basic interface (Sparkfun)

    . same message :"Failed to enter command mode"

    . idem with different rates or ID (4800Bd to 115KBd , Net ID 0, ...)

 

I have tried to update firmware (from 3DR SW or from Mission planner) :

   . impossible with the dedicted button on screen

   . succeded with CTS to Ground : red led solid and firmware updated

     (=> FTDI interface & IO ports are OK)

   . but same lack of dialog after !

 

=> Do you have an idea for investigate, ou should I contact 3DR for expecting a new one ?

 

Thanks for your help,

Gilles

 

PS :

- the connector is OK (observed under magnifying lamp),

- it has been soldered with ESD cautions

  (conductive bracelet on my wrist connected to an ESD carpet on my workplan) 

 

 

 

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Replies

  • Check the wiring. I had the same symptoms. My RX and TX line were reversed. I switched them and they started to work as normal.

    -Chris

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