suggestions for first radio ?

[miky94]

here http://www.electronoobs.com/eng_robotica_tut5_3.php it seems that I have to define in the firmware:
#define SERIAL_SUM_PPM THROTTLE,YAW,PITCH,ROLL,AUX1,AUX2,AUX3,AUX4,8,9,10 ,11
and instead of using UART I have to connect the receiver's PPM pin to the D2 pin the FC, I'll try

 

[mozquito1]

Maybe try just have the arm selected as low on Aux1 not medium & high aswell.
What flight program are you using.
I dont think it will allow all 3 settings as the range only sees one.
It may work but with the others being selected it maybe canceling Causing problems.

In Betaflight you can have arm assigned on Aux1. & don't assign anything to ch6-aux2
This way acro mode is default on all Aux2 switch positions. It does not matter.

 

[miky94]

Maybe try just have the arm selected as low on Aux1 not medium & high aswell.
What flight program are you using.
I dont think it will allow all 3 settings as the range only sees one.
It may work but with the others being selected it maybe canceling Causing problems.

In Betaflight you can have arm assigned on Aux1. & don't assign anything to ch6-aux2
This way acro mode is default on all Aux2 switch positions. It does not matter.

I'm using MultiWii 2.4 that is specific for MultiWii.
anyway it seems that in order to use 1 channel PPM instead of 6 channels PWM I have to configure it in the FC's firmware (see previous post)

 

[miky94]

about the flight controller upgrade, I found tons of different Omnibus F4 versions: aio, flip 32, micro, mini, pro, v2, v3, etc.
is there any important difference? (just need good hovering and GPS)
Omnibus F7 is much more expensive?
I'm undecided about which to buy of these:
- https://www.banggood.com/it/Micro-2...EC-OSD-for-RC-FPV-Racing-Drone-p-1132495.html
- https://www.banggood.com/it/9_4g-30...-OSD-5V-BEC-and-Current-Sensor-p-1226610.html
- https://www.aliexpress.com/item/F4-...aflight-Low-Noise-Stable-for/32891137083.html
- https://www.ebay.com/itm/F4-OMNIBUS...for-DIY-Mini-RC-FPV-Racing-Drone/252804328006
- https://www.amazon.com/Wolfwhoop-Betaflight-OMNIBUS-Controller-Integrated/dp/B077FMDR8S/ref=sr_1_2
Thanks!

@mozquito1 do you know differences between these versions? which would you recommend me?

 

[mozquito1]

Any omnibus f4, later versions if possible.
V2 v3 & AIO makes wiring easier & the build lighter = more flight time.

What it is saying is you need to remap the code in CLI so you can use ppm on D2.
Ive only ever had to this once when I bust a motor pin on the FC you can remap all the pins.
CLI is command line interface.
So type in what you have uptop.
Leave 5v & ground where they are & put the signal wire on D2.
The link you posted isn't your board is it.

 

[miky94]

Any omnibus f4, later versions if possible.
V2 v3 & AIO makes wiring easier & the build lighter = more flight time.

What it is saying is you need to remap the code in CLI so you can use ppm on D2.
Ive only ever had to this once when I bust a motor pin on the FC you can remap all the pins.
CLI is command line interface.
So type in what you have uptop.
Leave 5v & ground where they are & put the signal wire on D2.
The link you posted isn't your board is it.

on MultiWiiConf there isn't I a CLI but I think I have to configure PPM in the firmware, which is the same of my board​

 

[mozquito1]

I'm trying to find out on Google if throttle on D2 needs to be mapped somewhere else to an unused pin like A3 A5 or A7.
Which it probably does, but are them pins compatible. Most likely.

 

[mozquito1]

This is why I never opted for a MWii when I started. Naze was alot simple but broke easy.
It might not be cli but it's similar.

 

[SLFLY]

@mozquito1 do you know differences between these versions? which would you recommend me?

Don't get the micro F4. It's not suitable.

The other Omnibus F4 in the links are cheap clones and their quality is patchy. Some problems have been reported with Omnibus and GPS modules. The higher numbered versions of the board means problems on the fc have been fixed. The v4,V5,V6 etc are the better boards generally but they tend to cost more.

Because you plan to use a GPS module i recommend to get a branded FC like a Matek F405 STD. Matek make good quality stuff. And their boards are designed to work well with INAV and GPS modules specifically. For greater ease of compatibilty i recommend pairing it with a Matek ublox M8Q GPS. But other M8Q GPS's modules should work OK. Don't buy an M7 GPS. a cheaper GPS option is the Beitian BN-880

https://www.banggood.com/Matek-F405...RC-Multirotor-FPV-Racing-Drone-p-1141282.html
https://www.unmannedtechshop.co.uk/product/matek-ublox-sam-m8q-gps-module/
https://www.banggood.com/UBLOX-NEO-...-GPS-Module-Dual-Module-Compass-p-971082.html

 

[mozquito1]

Anything beats this old Multiwii2 stuff.
Alot of the newer boards are hard to get hold of sometimes, especially here in the uk.
It's months after release we start getting them or are clones.
I can vouch for the matek brand though.
I use the F411 wing in my builds.
GPS runs easily but I don't use it for missions just nav launch & alt hold.

 

[miky94]

I recognize clones because they don't have written the brand? but if the boards have the same hardware why their quality shouldn't be as good?

 

[mozquito1]

It's not that, it's the makeup of the boards.
Quality & the thickness of copper and board itself. Had clones where the pads just peeled off after the iron was only on for 2 seconds.
Or the bits inside burnt out.

 

[miky94]

It's not that, it's the makeup of the boards.
Quality & the thickness of copper and board itself. Had clones where the pads just peeled off after the iron was only on for 2 seconds.
Or the bits inside burnt out.

so better look for one with Omnibus written on? or the Matek that SLFLY linked
anyway I tried the PPM configuration, I checked the channels on the transmitter and they are:
ch1 yaw
ch2 pitch
ch3 throttle
ch4 roll
ch5 aux1
I set up the ch5 to SwA
so I uncommented this line in the code of the MultiWii firmware acccording to the channels order:
#define SERIAL_SUM_PPM YAW,PITCH,THROTTLE,ROLL,AUX1,AUX2,AUX3,AUX4,8,9,10,11
then I uploaded it to the FC and I leave the default configuration to arm/disarm the motors.
the transmitter output mode is on PPM and I wired receiver's PPM pin to the FC's D2 pin, and obviously + and -.
but no luck

 

[miky94]

These has the writing Omnibus, so shouldn't be clones:
- https://www.aliexpress.com/item/bet...D-TF-Slot-For-FPV-Quadcopter/32845341447.html
- https://www.aliexpress.com/item/Fei...D-TF-Slot-For-FPV-Quadcopter/32889966019.html

 

[mozquito1]

Sorry I'm at a loss with this without having it in front of me.
The boards linked above I can vouch for.
I had one & it ran inav in a wing with all the trimmings. Gps, launch, alt hold, return.
It just needed RC driver fixer to get it going.
Just have that running when you plug the FC into a PC.

 

[miky94]

Sorry I'm at a loss with this without having it in front of me.
The boards linked above I can vouch for.
I had one & it ran inav in a wing with all the trimmings. Gps, launch, alt hold, return.
It just needed RC driver fixer to get it going.
Just have that running when you plug the FC into a PC.

Ok I'll buy one of those 2, they look like identical.
anyway @mozquito1 in the images you posted before I don't see the writing Omnibus so maybe are of another brand or clones.
the annoying thing on these FC is that I have to solder all the pins but maybe I can solder an header.

 

[mozquito1]

It may come with pins.
They just add weight though along with the servo plugs taking up space.
Try practicing your soldering skills on somthing. So you can direct solder to the holes & pads. I used an old TV or hi-fi.

 

[miky94]

It may come with pins.
They just add weight though along with the servo plugs taking up space.
Try practicing your soldering skills on somthing. So you can direct solder to the holes & pads. I used an old TV or hi-fi.

yes but it's inconvenient if I have to change components or use it in other projects
some come with the header but they are not pre-soldered

 

[mozquito1]

Both printed though the 2nd is sus
You could ask for pre solderd but likely at a cost. I'd prefer without them but normally when I buy I get the option. & they still come with pins. Pins & servo plugs take up valuable space in acro builds.

 

[mozquito1]

The 2 boards you linked to are the same.
Pro V3. I'd suggest the matek F405 for non acro builds, better for inav & it's extra features. But that Pro v3 will still do the same job. All boards are OK even some clones. The only ones I'd say are a waste of money are naze, even the newer ones.
Multiwii2 are a hassle & out of date as you know. Remapping pins through cli is a sinch
If anything breaks. All boards now have dedicated ppm sbus ibus pins multiple uarts. Telemetry.
Just bung your ia6c on the pins circled
Select serial rx in ports tab on uart 3 or 6 I can't quite remember. And apply serial & ibus in the receiver menu in the config tab.