LibrePilot Forum

Users => Vehicles - MultiRotors => Topic started by: anthropo on November 20, 2016, 11:52:44 am

Title: Minoposd problem
Post by: anthropo on November 20, 2016, 11:52:44 am

Hello,
 
Coupled to a revolution board, I have set up a minimosd (https://www.aliexpress.com/item/MICRO-MINIMOSD-Minim-OSD-Mini-OSD-W-KV-TEAM-MOD-For-Naze32/32728327230.html) with minoposd as mentionned on https://librepilot.atlassian.net/wiki/display/LPDOC/MinOPOSD+setup

I have respected all (last firmware LP_All_From_Revo1110.hex,  Charset_1_3_0.mcm)

BUT

-The voltage is showed on two lines, one allways being "E 0:00" , polluting my screen...
-When the board is inclined, the horizon is made of characters instead of a nice line.

What is wrong please ?

Title: Re: Minoposd problem
Post by: f5soh on November 20, 2016, 12:52:45 pm

The "E 0:00" refers to the estimated flight time.

Charset is not updated to the right one, some graphics do not match the charset_1_3_0 content.

(https://forum.librepilot.org/index.php?action=dlattach;topic=2647.0;attach=4622)
Like the clock, or the VA with a [ on it.

At boot you should see the JR Logo

(https://forum.librepilot.org/index.php?action=dlattach;topic=2647.0;attach=4621)

Title: Re: Minoposd problem
Post by: anthropo on November 20, 2016, 08:53:10 pm

just to confirm i have just downloaded (again) the charset on the wiki and the result is the same : characters instead of lines.

Title: Re: Minoposd problem
Post by: f5soh on November 20, 2016, 09:12:05 pm

Do you see the JR logo at boot ?
The charset in your screenshot do not match.

The charset is stored inside the video chip, just to be sure you should power the OSD using a external +5V source that can handle at least 500mA

Title: Re: Minoposd problem
Post by: anthropo on November 21, 2016, 02:30:16 pm

Sorry but i don't understand. Charset cannot be changed ? what happens when i update character set via configtool ?

And more, is there a way to erase the "E 0:00" that refers to the estimated flight time ?

Title: Re: Minoposd problem
Post by: f5soh on November 21, 2016, 03:44:22 pm

Of course the charset can be changed. Simply try powering the OSD with a good reliable +5v source (not the one from FTDI) and run the upload from the configTool.

If you want to do custom changes to the osd firmware you should compile your own version from sources available here:
https://bitbucket.org/f5soh/minoposd/src/a82264ba4bacc66bc753f8f3feca802d7b94ca32/ArduCAM_OSD/?at=master

Title: Re: Minoposd problem
Post by: anthropo on November 22, 2016, 09:36:14 am

Understood !

Just to be absolutly sure : Will this schematic work ?

Title: Re: Minoposd problem
Post by: anthropo on November 22, 2016, 09:38:19 am

Another question : some put a capacitor beetween 5v and ground. Do you recommend it ?

Thank you

Title: Re: Minoposd problem
Post by: f5soh on November 22, 2016, 06:44:48 pm

Schematic looks ok, you can power using the +5v pad as well

Capacitor should prevent voltage fluctuations and sometimes osd shutdown while applying throttle.

Title: Re: Minoposd problem
Post by: anthropo on November 23, 2016, 10:09:20 am

Thank you it works now.

Perhaps that should be in the wiki : 'if you don't see the logo + JR130 at the startup ,then charset is not uploaded. Take a more powerfull 5V source'