What else can I do with a MinimOSD? - Naze32 - Frsky D4r-II

[tkboyle]

OK. My heads about to blow with information on these OSD';s
It';s been fun trying to get the thing working and a few gotchas along the route.

1st issue was arming the naze32 causing the com port conflict. I subsequently have enabled the soft serial port for the telemetry and it';s now out putting on pin6. Great as I now have Telemetry back to my receiver and the OSD is working woohoo!!!

Now I';d like to know what I can do in only software configuration. Currently I have, horizon, flight modes, barometer, magnetometer and battery voltage all being relayed from the telemetry port.

Is there a soft way to enable RSSI that';s being passed through the naze?
Is there a virtual current sensor?
Is speed only derived from GPS or is there another way using the accelerometer?

I ask because I';ll spend hours on this thing trying to do something that probably isn';t possible.

[quadfather]

OK. My heads about to blow with information on these OSD';s
It';s been fun trying to get the thing working and a few gotchas along the route.

1st issue was arming the naze32 causing the com port conflict. I subsequently have enabled the soft serial port for the telemetry and it';s now out putting on pin6. Great as I now have Telemetry back to my receiver and the OSD is working woohoo!!!

Now I';d like to know what I can do in only software configuration. Currently I have, horizon, flight modes, barometer, magnetometer and battery voltage all being relayed from the telemetry port.

Is there a soft way to enable RSSI that';s being passed through the naze?
Is there a virtual current sensor?
Is speed only derived from GPS or is there another way using the accelerometer?

I ask because I';ll spend hours on this thing trying to do something that probably isn';t possible.

RSSI isn';t passed through the Naze without rigging.  For RSSI on the OSD you just need a cable from the RX to the OSD.  For current monitoring you need a current sensor, which is a little more involved.

The D4R-II outputs RSSI on channel 2.  If you connect the signal pin of channel 2 to the RSSI pad on the OSD you';ll have RSSI on the OSD.

For current monitoring you';ll need a current sensor, for example an AttoPilot.  You can connect the sensor';s output to the CURR pad on the OSD.  The Naze also supports current monitoring on pin 8, however, since you use softserial this is not possible anymore.

Speed is GPS only, AFAIK.

[tkboyle]

Oh right. So the D4R-II outputs RSSI on channel two signal wire whilst in CPPM mode.
That';s pretty cool.

I';ll hook that up too.

[tkboyle]

RSSI isn';t passed through the Naze without rigging.  For RSSI on the OSD you just need a cable from the RX to the OSD.  For current monitoring you need a current sensor, which is a little more involved.

The D4R-II outputs RSSI on channel 2.  If you connect the signal pin of channel 2 to the RSSI pad on the OSD you';ll have RSSI on the OSD.

For current monitoring you';ll need a current sensor, for example an AttoPilot.  You can connect the sensor';s output to the CURR pad on the OSD.  The Naze also supports current monitoring on pin 8, however, since you use softserial this is not possible anymore.

Speed is GPS only, AFAIK.

Hi quadfather,

You eluded to the fact that you could get RSSI out of the signal pin on the D4R-II.

I think I';m there but I would be interested to know what you have set RSSI min and Max on MWOSD.

I have Max set at 2 and min at 90 and can see my signal strength but doesn';t match what I can see on my Taranis.

Is there anything else I need to set on config.h

[quadfather]

Hi quadfather,

You eluded to the fact that you could get RSSI out of the signal pin on the D4R-II.

I think I';m there but I would be interested to know what you have set RSSI min and Max on MWOSD.

I have Max set at 2 and min at 90 and can see my signal strength but doesn';t match what I can see on my Taranis.

Is there anything else I need to set on config.h

Hmm... I used the GUI to configure it.  I don';t think I touched min and max (max should be higher than min btw) and just enabled RSSI.  In fairness, I haven';t done extensive testing, more of a connection test to see if things worked.  Mine is currently in bits again, so I have no means of quickly verifying what I did, but if memory serves it was all rather painless.  What other settings are there in config.h relating to RSSI?

[tkboyle]

Hmm... I used the GUI to configure it.  I don';t think I touched min and max (max should be higher than min btw) and just enabled RSSI.  In fairness, I haven';t done extensive testing, more of a connection test to see if things worked.  Mine is currently in bits again, so I have no means of quickly verifying what I did, but if memory serves it was all rather painless.  What other settings are there in config.h relating to RSSI?

There seems to be two options that may be applicable.

Code Select Expand

//#define FASTPWMRSSI              // Undefine this if you are using non standard PWM for RSSI ( high frequency )
//#define SMOOTHFILTER             // Enable for smoothest readings of voltage / current / RSSI. Uses more memory. Prototype

Not sure if fastpwm is needed for frsky.

[quadfather]

There seems to be two options that may be applicable.

Code Select Expand

//#define FASTPWMRSSI              // Undefine this if you are using non standard PWM for RSSI ( high frequency )
//#define SMOOTHFILTER             // Enable for smoothest readings of voltage / current / RSSI. Uses more memory. Prototype

Not sure if fastpwm is needed for frsky.

I reckon FASTPWMRSSI would be a sensible option for the D4R-II.  It outputs RSSI as a high frequency PWM signal so that fits the description.  Try enabling it and see if it make as difference.