Hello everyone I found this forum link on the oscarliang.com site (Amazing articles BTW) and came here for help.

I have some knowledge of FPV but this is too much new stuff for me. I was flying CC3D with FPV and connected it successfully by myself, but now There is Minim OSD and a Naze and even Opto ESC's that I have never used before. 

Generally I hope most of this is wired correctly but I have some questions. 

1) I run wires from 5V BEC PDB and power naze32 with them on channel 5 but I don't know how to power OSD. I have to cut wires somewhere in half and make additional to connect the OSD or I have to solder 4 wires to the 5V BEC on PDB and connect Naze and OSD separately? Isn't there any way to put the power to Naze and from Naze to OSD?

2) Not sure also about grounding the camera and a VTX. I put GND wires to the OSD and +12V to PDB without ground. Is that correct?

3) What about rest of the wires are they correctly connected?



Any help will be much appreciated. Thanks.

1) you can either make a Y connection (yes, solder two wires to one) from PDB to OSD and FC or solder separate wire from another 5v pad on FC - this way 5v will go to FC and then to OSD. Keep in mind that minim OSD is vulnerable to electrical noise, if you'll notice any FPV blackouts during punchouts or flips and rolls, solder 470uf low ESR 6V capacitor (or bigger, whatever you have on hand) as close as possible to OSD 5v and gnd pads,
2) you should ground every component once. I always wire them to PDB ground directly but have seen people "daisy chain" them - ie. connecting camera ground only to osd and grounding osd to pdb. Whatever will work for you to keep it in order. Can't really tell which way is better. Just remember to ground once to avoid possible ground loops,
3) I see you are a "daisy chainer" That should work.

Cheers!

Here is how I normally connect everything:



I connect the battery voltage to the FC instead, so you can calibrate the voltage in cleanflight/betaflight etc gui and send it to the osd over the serial connection.

About the signal ground to the ESCs, I don't think they are necessary. On my racerstar ESCs, I have it connected, but that is because I run synced 8K multishot (Maybe it is better to have it with higher update frequency). On a littlebee pro synced 2k multishot setup, I have not connected the ground, and I dont have any problems with it.
ESC signal ground is probably popcorn discussion material

Hey. Many thanks for an answer.

1. I don't like Y connections so probably the solution with powering one with the other is much better but Im not sure how. There is only one 5V pad on PDB so from that I should take wires to Naze32 and connect them to channel 5 like on the picture right? and on the channel 6 put another 2 wires (red and black) and connect them to the OSD 5V and GND right?

2. I saw YT videos where people connect only Video IN from Camera and Video OUT from VTX to an OSD so I should ground them directly to PDB? What is the proper way?

Sorry mate am not an electric engineer and with volts, ampers, power, ground and other guys I met just 3 months ago

(17-Aug-2016, 11:51 AM)netox Wrote: Hey. Many thanks for an answer.

1. I don't like Y connections so probably the solution with powering one with the other is much better but Im not sure how. There is only one 5V pad on PDB so from that I should take wires to Naze32 and connect them to channel 5 like on the picture right? and on the channel 6 put another 2 wires (red and black) and connect them to the OSD 5V and GND right?

Solder two wires on the same pad, one for the osd and one for the FC

2. I saw YT videos where people connect only Video IN from Camera and Video OUT from VTX to an OSD so I should ground them directly to PDB? What is the proper way?

In theory, you should be able to do that, but I have not had any good experience doing it that way. I had problems with loosing video if I solder the grounds to the PDB. If using the grounds on the minimosd as shown in my previous post, I get perfect picture every time.

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(17-Aug-2016, 11:42 AM)oyvinla Wrote: About the signal ground to the ESCs, I don't think they are necessary. On my racerstar ESCs, I have it connected, but that is because I run synced 8K multishot (Maybe it is better to have it with higher update frequency). On a littlebee pro synced 2k multishot setup, I have not connected the ground, and I dont have any problems with it.
ESC signal ground is probably popcorn discussion material

I'm sorry for trying to misslead you, you better stick with the ESC signal ground just to be sure that you will not run into any potential problems by not having signal ground

@oyvinla

Damn that is complicated and there are so many possibilities but I've updated the screen. 



Because I just watched that UART1 is connected to the usb port on the Naze32 and there are problems connecting quad to cleanflight with minim OSD I've decided to use Serial port on ports 5 and 6. Is that going to work?

FYI I have only 6 channels FlySky I6 Radio and want to connect also buzzer for an lost plane alarm that will be not a problem right? Just connect buzzer to the naze and all 6 channels will be sent via iBUS?

Many thanks for your help.

One more thing, on the drawing, That receiver is able to run ibus (serial communication) with the FC, so I disconnected the PPM wire and changed it with an IBUS connection instead. Just make sure you set UART2 to RX serial in the ports tab (cleanflight/betaflight) and choose RX serial and ibus in the configuration tab

(17-Aug-2016, 12:24 PM)oyvinla Wrote: One more thing, on the drawing, That receiver is able to run ibus (serial communication) with the FC, so I disconnected the PPM wire and changed it with an IBUS connection instead. Just make sure you set UART2 to RX serial in the ports tab (cleanflight/betaflight) and choose RX serial and ibus in the configuration tab

Yes I saw a video that people flash 10 channels firmware on this reciver and get them all by the IBUS so it is probably good advice to connect it that way in the beginning so next time it will be less work If I decide to add more channels.

But the picture. Now all is connected correctly right? I can stick with this and everything should be fine? Probably will need some more help with Cleanflight but now I'm waiting for most of that parts so will ask again in the future Many many thanks

(17-Aug-2016, 12:30 PM)netox Wrote: Yes I saw a video that people flash 10 channels firmware on this reciver and get them all by the IBUS so it is probably good advice to connect it that way in the beginning so next time it will be less work If I decide to add more channels.

But the picture. Now all is connected correctly right? I can stick with this and everything should be fine? Probably will need some more help with Cleanflight but now I'm waiting for most of that parts so will ask again in the future Many many thanks

IBUS also got less latency than the PPM signal so the quad will respond faster to stick-movement. 
I have flashed the 10ch firmware on my flysky, but I actually only use 6 channels. I have mixed switch C (3 way) and D (2 way), so it has a total of 2x3=6 positions. I arm with the D switch, and choose flight mode with the C switch when it is armed. If it is unarmed, the C switch in middle position will turn on the beeper. The A switch is configured for turning blackbox on and off.
I'm not sure if the original firmware allows for mixing the aux switches.

Yes, now it is connected the way I would do it. The only thing i normally don't connect is the Vbat ground due to the risk of groundloops. You already have ground connected with the 5V, so it is not neccessary. If you measure the resistance on vbat ground and 5v ground on the fc, you will see that they are connected internally on the FC.

(17-Aug-2016, 01:50 PM)oyvinla Wrote: IBUS also got less latency than the PPM signal so the quad will respond faster to stick-movement. 
I have flashed the 10ch firmware on my flysky, but I actually only use 6 channels. I have mixed switch C (3 way) and D (2 way), so it has a total of 2x3=6 positions. I arm with the D switch, and choose flight mode with the C switch when it is armed. If it is unarmed, the C switch in middle position will turn on the beeper. The A switch is configured for turning blackbox on and off.
I'm not sure if the original firmware allows for mixing the aux switches.

Yes, now it is connected the way I would do it. The only thing i normally don't connect is the Vbat ground due to the risk of groundloops. You already have ground connected with the 5V, so it is not neccessary. If you measure the resistance on vbat ground and 5v ground on the fc, you will see that they are connected internally on the FC.

There is an mixer in the original firmware also but I didn't even check what you can do there. 
Ok, so only Positive to the VBAT port on the Naze32 (Painles360 also made this way in his video) and this will automatically show on the OSD when I turn it on in the software?

Yes, you configure the voltage in cleanflight, and choose fc voltage in the mwosd gui

There is one last question. If I will be using iBUS and connect osd to pin 5 and 6 (Soft Serial 1) can I connect LED strip to pin 6 or 7 or the pin 5 i specially designed for LED and I should swap this connections sonnect OSD to pin 6 and 7 and LED to pin 5?

question to all the electronics gurus here,
in the shown example the grounds are comming from camera to osd and from osd to pdb ground and to vtx...
last time i've had such setup i had some issues, as i changed to the rule one device one ground my all issues are gone...

and the question which approach is better:
for ground cable:
cam - osd, osd - vtx, vtx - pdb
or
cam - PDB, osd - PDB, VTX - PDB

or it doesnt matter as long as you have only one ground for each component?

(18-Aug-2016, 08:25 AM)netox Wrote: There is one last question. If I will be using iBUS and connect osd to pin 5 and 6 (Soft Serial 1) can I connect LED strip to pin 6 or 7 or the pin 5 i specially designed for LED and I should swap this connections sonnect OSD to pin 6 and 7 and LED to pin 5?

From the picture below, it looks like you can connect: 

IBUS to 4
LED to 5
OSD to 7 and 8 and configure softserial2 for MSP with baud 19200. Remember to set your baudrate to 19200 when you flash the minimosd from the arduino ide. The softserial is not fast enough to run at any higher baudrate.

(18-Aug-2016, 02:42 PM)oyvinla Wrote: From the picture below, it looks like you can connect: 

IBUS to 4
LED to 5
OSD to 7 and 8 and configure softserial2 for MSP with baud 19200. Remember to set your baudrate to 19200 when you flash the minimosd from the arduino ide. The softserial is not fast enough to run at any higher baudrate.

That is again very useful information I will definitely use this topic to remember about everything when the parts come from China Thanks a lot. 
That ports on cleanflight will be challenge for me but what I'm should probably do is:

UART1 - USB connection - Default settings (like on the picture, nothing to change)
UART2 - iBUS - Just turn on Serial RX and on the main screen change connection type from PWM to Serial RX and choose IBUS.
SOFTSERIAL1 - LED strip - What to change here? or nothing? 
SOFTSERIAL2 - Micro MinimOSD - MSP with baud 19200