Its been a while since my QAV 250 has been airborne. It had a terrible crash (well a lot of terrible crashes) while I was a beginner. Other than ordering another bottom plate from the states, it got shelved. Good thing for me is that I don’t throw things a way, so when I had a brain storm of super gluing it all back together, it actually worked. It seems stiff enough and I’m not going to be using it as rough as I use to, it will be used with my mobius camera for some videography. I had used most of the electronics on my QAV-R so I have had to order up some parts. I’m about 2 parcels away from getting this old bird up in the sky. I got pretty excited today when my Emax motors turned up.
Now that the weather is getting better I’ve been getting out more and hammering my QAV-R. Been loving it, I still have a video to make of my trip to Renmark, South Australia. Well yesterday I was giving my quad a little to much still and damaged the top plate, where the VTX antenna sticks out. Which is not good, can’t fly FPV if you ain’t got an antenna. So I had to improvise, and quite quickly at that, because if I got this fixed soon, I could get one more flight in before dark. I took to the top plate with a 6.5 mm drill not far from where it was originally located and presto. It looks neat, tidy and out of reach of any more potential damage. I did order another plate, but probably wont bother with it until I total this one. Oh yeah I did get one more flight in.
Pretty pumped, I have been able to use my 3D printer to create my first quad. I made it using OpenScad, which is a pretty cool 3d making app and best of all it is free. As you can see from the photo my top board has its holes slightly out of whack (this has been fixed just before I put this blog up, but still need to print it). I am still a little worried I haven’t allowed enough room for the esc’s, and thinking this will be a challenge. Also I haven’t put any holes in yet for the FPV camera. The reasoning for this is, I’ll test how it flies LOS and if any good I will put the markings in for the camera. When I get back from Queensland early next month I will start putting this together and will have a follow up blog on it. In the mean time I’ll keep getting my air time with my QAV-R.
My other new toys consist of the Taranis and XSR receiver. I so was never going to get a Taranis, I did not want to be like everyone else … but as it was pointed out to me, ‘There is a reason why everyone has one’ and he was absolutely right. The SBUS feature is my favourite as you can have a really light receiver with 8 channels with one wire, how sweet is that. The menu took a bit of getting use to, but once you’ve been over it a couple of times you feel at home. Also the feel of the Taranis in your hands, just has that feeling that it belongs there.
Man I have been a little slack on the blog again. I promised myself that I would do at least one post a month. However I do believe I have a decent excuse. I got myself a QAV-R and man am I loving it. It’s a lot smaller than my QAV250 and made all the parts I shifted across look like giant parts. So far I have swapped out the lumenier pcb with the Matek and am running Afro race 20 amp esc’s with Scorpion 2205 2350kv. I am also using my OpenPilot Revolution board with raceflight on it. Its mad and I love it.
Well, well, well. I enjoyed my last FPV flight and was keen and eager to get out and give it another crack. All started off well, confidence was booming even when the one of the esc’s over heated about half way through my flight, and then bang. The same esc gave way after a roll and had a little spasm, but I was a little too close to a tree and it all came falling down. I’m thinking it was the fact that my esc’s are/were 12 amps, which were ok when I was running 2206 2000kv’s, but I pumped up the motors to 2205 2350kv’s. When sitting on or around 60% throttle it was drawing 12 – 14 amps, so it was inevitable that they were going to cut out during flight. Not much damage in the end. I broke an arm on the QAV250 and a battery strap. I had a spare main board for my QAV250 so I started the rebuild and also super glued the old board back together and is also ready to fly again. I have also ordered some Afro 20 amp race ESC’s from Hobbyking.
Since the kids have grown up a little I have had a little more time to fly which is great. My old FPV gear was ok but wanted some new stuff so I got a pair of FatShark Dominators V3, and a 25 mW immersion race band transmitter. I had also purchased the FatShark 720HD pilot but honestly that is a fizzer of a camera, so I got a Sony 1170. I think that’s the model. Other than 720 camera I got my gear from multirotorgear.com.au.
I got to test my gear out today with nice sunny conditions and low wind. Here is the video.
I was hunting around in the garage for my OpenPilot Revolution (Revo) so I could once more try the painful act of trying to get Betaflight on it. So the search began on Google and I wasn’t getting much, actually nothing at all for the revo board, but was getting a few hits on the CC3D so I figured it was all the same (tho I did know the significant differences off the 2 boards). To no avail I got nowhere. In some ways I went backwards because all I managed to do was brick the board. It was a link off a search that lead me down the path of RaceFlight. I had heard nothing of it, but the link did say that you could put its firmware on the revo board. My eyes lit up and the journey began. It was quite simple in some respect, all that had to be done was to short out the boot loader pads, then click on the “no reboot sequence” button and bang you could upload the firmware to the board. Best off all after that you unsolder the boot loader pads and now you can upload the newest firmware’s as often as you want like a normal board.
Once it was loaded and had it screwed down on my QAV 250, I quickly adjusted a few setting and flight modes and I was ready. To be quite honest it was an experience that put a massive grin across my face. I could not let go of this and spent the next few hours dialing it in, and magic. You can do rolls and flips on a dime. It is a brilliant firmware and is a must to try if you have an F4 board. Trust me you will love it.
When I got home from work today, the first thing I did was run out to the garage, grabbed a charged battery, plugged it into the QAV250 and fired up the transmitter. Straight off the mark she was up there flipping and rolling . There was not much tuning to do at all.
I pumped up the P on the roll by 1 and pumped up the P on the pitch by .5 and she was in race mode. Rather happy with the scorpion motors. Also glad that they are in the Aus warehouse on HobbyKing.
Woohoo, got home from work today and found that the postie had been and dropped off my new motors. I went with some Scorpion 2205 2350kv’s from HobbyKing.com. Link to motors are here.
So after dinner I kissed the kids goodnight and headed out to the garage to solder up some connectors to the motors and trim down the wires. I think I had that done in about an hour and have installed them on to my QAV250. I fired them up to check that they were all going in the right direction, but unfortunately it got too dark to give them a test flight. That will be tomorrow night. Til then.