that is really too bad! Actually, I tried to reflash the ESP8266 numerous times, with no success. Flashing worked when it first arrived using NodeMCU and FTDI Adapter. Now, flashing does not work. Yesterday, I gave up and ordered new ESP8266.
But again, funny thing is that I can actually still connect to the PixRacer Network with OSX, only QGC will not recognize the vehicleā¦ anyways, will keep you posted.
I also flashed with MavLink ESP8266 Firmware from px4 website using NodeMCU and FTDI Adapter. I can connect my computer to 8266 but QGC doesnāt find itā¦ The 3d radios work fine with TL1ā¦
For me, QGC 2.9.4-31 running on Ubuntu 15.10 is taking about 30 seconds to upload parameters and connect via 8266. Connection via QGC/Android on a Nexus7 takes about half as long to upload parameters.
After flashing the latest px4master firmware (29.2.2016 21:30). I could arm my quad but the motors did not spin. Until today it was always working. I did a esc cali ration with the qgc 2.9.4 but itdid ot help.
I reflashed the pixracer with the stable version andit worked fine. Arming in stabilize work in stable but not in acro modus. Thats why I tried a second time to flash the master version but the motors did not turn at all. Arming in acro mode works as well as in stablize but no motor spin.
By plugin the battery the esc do not seams to start properly the beeping stop. With the stable version they start correctly.
I use bheli 20A
Anyone an idea?
An arming bug affecting PixRacer went into master recently (in my safety switch enable/disable code). I think this PR: https://github.com/PX4/Firmware/pull/3892 fixes it.
I merged the fix to master, so testing in ~10 mins for anyone affected would be great. I expect it to solve this, but please report back at any rate if it works for you.
Oh great I will try tonight and give some feedback. Thanks for the very quick response.
Itās working fine now, thanks very muchā¦
Great! Thanks for reporting. Let me know if you have any feedback on ACRO mode, too.
I have tried out the v 1 case from Shapeways for the Pixracer with foam insert into the little box covering the baro chipā¦ This is major improvement, concerning the altitude drop in AltHdā¦ I am using it in my 3dr quad and 3.3.4 fwā¦
Here is a first try of my Pixracer with TBS (clone) upper center plate. Looks pretty good. I printed also case for Pixracer: PixRacer Basic Case by Painless360 - Thingiverse - and piece of foam included under baro.
Some more PX4 Acro feedback from my latest test flight in the other thread: Pixraxer as a RACER
To summarize: much better with ATT_BIAS_MAX = 0.0, but Iām still unhappy, and will now give the APM firmware a try.
+1 regarding the aforementioned issues with acro flight.
Iād like to add that my copter behaves far too twitchy in the center stick-ranges. Lowering pitch/roll sensitivity didnāt really improve that. Is there any way to add expo to pitch and roll? It would enable using high rates while maintaining fine-grained control in the center stick-ranges.
I donāt think there is a way to do that in PX4 at the moment. However, I added expo curves to pitch and roll on my transmitter (FrSky Taranis - easily programmed and set to only activate in Acro mode), that helped quite a bit.
While this is an easy workaround I would rather have all parameters relevant to the flight-modeās behaviour reside in one place, the flight controller. It would also enable expo to be only applied to the acro mode and not all flight-modes that accept stick input.
As Olex said āadded expo curves to pitch and roll on my transmitter (FrSky Taranis - easily programmed and set to only activate in Acro mode)ā is the best way to do that. No point in duplicating functionality which the transmitter has been designed to provide in an easily customizable and flexible manner.
henkf does have a point though. Not everybody flies with a Taranis, and not all radios allow to customize input processing in the same way (allowing to trigger expo together with acro mode). Other popular FCs offer expo and throttle curve settings in-software, specifically everything thatās Multiwii-derived (Baseflight and Cleanflight with all its forks). Also, processing expo in the FC allows higher input resolution around stick center, because the R/C channel value remains directly proportional to stick throwā¦ though this wonāt be practically noticeable to 99% of the pilots out there.
Need an advice. Pixracer board with PX4 master stack in the quadcopter. Does anybody know how to setup Pixracer motor 6 pin (CH6) relay and have CH9 (SBUS) on it to control for example RC LED switch? It was easier with AUX pins on Pixhawk with AC software.
Hi,
has anybody information about the current lead time for Pixracer delivery? I ordered 2 Weeks ago and asked for a rough delivery date. No answer yet and order states āProcessingā since order day.
Hi,
We have expressed our concerns with the difficult availability of Pixracer to the manufacturer. I hope they get the current manufacturing issues under control soon.
-Lorenz