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)
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