vgwit

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minOPOSD altitude setting
« on: August 13, 2018, 08:13:39 am »
Have upgraded from CC3D to Revo and GPS. Is there a way to have altitude in OSD from barometer? I've found Settings -> OsdSettings -> AltitudeSource that is set by default to GPS. Changed it to Baro but it seems not working. Is there another way?

Thanks.
« Last Edit: August 13, 2018, 08:35:53 am by vgwit »

f5soh

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Re: minOPOSD altitude setting
« Reply #1 on: August 13, 2018, 12:54:49 pm »
The right way to configure the MinOPOSD is using the config tool, like described in Wiki page.

The OsdSettings UAVO refers to another OSD hardware, never released.

vgwit

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Re: minOPOSD altitude setting
« Reply #2 on: August 13, 2018, 01:47:43 pm »
Thanks.
I use the config tool and want to see Home Altitude from telemetry via Flex-IO port on Revo. The question is which data I'll see? From GPS or barometer? Is it configurable?

f5soh

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Re: minOPOSD altitude setting
« Reply #3 on: August 13, 2018, 01:59:34 pm »
Value is the same as the one displayed in PFD equal to the PositionState.Down UAVO.

Without GPS this value comes from baro
With GPS, the result is a mix between GPS and baro and give altitude above HomeLocation.

vgwit

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Re: minOPOSD altitude setting
« Reply #4 on: August 13, 2018, 10:07:06 pm »
What I see is Home Altitide in miniOPOSD shows altitude above home location. But reads only GPS, not barometer (it isn't present at all until GPS lock) while PFD and PositionState.Down UAVO relies on baro. I'd prefer to see Home Altitide from barometer. How to get it?

f5soh

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Re: minOPOSD altitude setting
« Reply #5 on: August 13, 2018, 10:37:36 pm »
Seems you are using the generic "All boards" MinOPOSD firmware.
Since you use a Revo you may need to flash one "Revo only" MinOPOSD firmware for Altitude based on PositionState.Down.

"Revo only" MinOPOSD firmware add also more warning alarms and travel distance.

vgwit

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Re: minOPOSD altitude setting
« Reply #6 on: August 14, 2018, 09:03:22 am »
Thank you. I'm flashed
 LP_MicroKvteam_CC3D_analog_inputs300718.hex.
Will try
 LP_All_From_Revo300718+AnalogRSSI_pin1.hex
 and LP_All_From_Revo300718.hex
tonight.
« Last Edit: August 14, 2018, 09:07:37 am by vgwit »

vgwit

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Re: minOPOSD altitude setting
« Reply #7 on: August 14, 2018, 08:41:42 pm »
Have tried other Revo firmware.
Some questions left:

- All_From_Revo300718 shows RSSI always 100% no matter what it is reality. I guess Revo get it from receiver. I use iA6b receiver and iBus on Flexi port. What I need to see real RSSI?

- All_From_Revo300718+AnalogRSSI_pin1 says about pin1. It is of what?

- Both firmware shows a parameter E XX.XX which I couldn't find in config tool. What is it?

 

f5soh

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Re: minOPOSD altitude setting
« Reply #8 on: August 14, 2018, 08:52:46 pm »
Quote
shows RSSI always 100% no matter what it is reality.
Link quality, not related to RSSI (Received Signal Strength Indication) not send by receiver except if you are able to redirect the Rssi value to one receiver output in PPM/PWM : See last entry in Input tab.

Quote
AnalogRSSI_pin1
Pin1 in OSD pcb connected to the receiver output analog RSSI voltage, if any.
https://librepilot.atlassian.net/wiki/spaces/LPDOC/pages/7274504/MinOPOSD+setup#MinOPOSDsetup-Rssisetup

Quote
E XX.XX
Related to the remaining energy. Assumes you configure a Voltage/Current sensor connected to the Revo.

vgwit

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Re: minOPOSD altitude setting
« Reply #9 on: August 14, 2018, 10:48:26 pm »
Thank you f5soh,

my receiver outputs analog RSSI and passes it to RSSI input of my micro minimOSD module. With firmware LP_MicroKvteam_CC3D_analog_inputs300718 I see it correctly. But with both Revo firmwares I do not see it, it shows either 0 or 100%. How can I solve this?
« Last Edit: August 15, 2018, 07:55:40 am by vgwit »

f5soh

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Re: minOPOSD altitude setting
« Reply #10 on: August 14, 2018, 11:14:46 pm »
Download the archive from this post and flash the LP_All_From_Revo300718+AnalogRSSI_MicroKvteam_pin3.hex
I didn't upload the right file to the wiki with latest update.

vgwit

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Re: minOPOSD altitude setting
« Reply #11 on: August 15, 2018, 08:18:41 am »
Thank you f5soh,

I'll try it tonight.

Not quite understand about RSSI from Revo:

Link quality, not related to RSSI

Manual says for All_From_Revo300718:

"RSSI information comes from link quality UAVO"

Why with this firmware I see in OSD 100% Link quality instead of RSSI? Is it possible to see RSSI?

Re: minOPOSD altitude setting
« Reply #12 on: August 15, 2018, 04:54:46 pm »
Modern 2.4g receivers have Link Quality instead of RSSI.  It doesn't do you any good to see a high RSSI when flying a long way away, just because you are flying over someone's wifi.  You would need to know how high the RSSI of your packets is when compared to background noise.

You use Link Quality as if it were RSSI except that it will be close to 100% most of the time.  When it is below 100% most of the time you should turn around, because you are probably at 90% of maximum distance.  You can test to see if it changes by turning off the transmitter and it will drop to 0% if configured correctly.

vgwit

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Re: minOPOSD altitude setting
« Reply #13 on: August 15, 2018, 07:49:51 pm »
Thank you Cliff,

it is clear now about difference. The only thing not clear in my case is what does it mean when OSD RSSI with All_From_Revo300718 firmware shows 100% with transmitter switched off.
« Last Edit: August 15, 2018, 09:03:11 pm by vgwit »

f5soh

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Re: minOPOSD altitude setting
« Reply #14 on: August 15, 2018, 09:41:06 pm »
This means receiver still sending a valid signal to the FC.