I was having a tough time deciding what parts to put into this frame. I have always wanted to build a mini quad that runs 20A ESCs and 6045 props on 4S, for some serious speed. However the Arris X-Speed 250 frame comes with a PDB that can only handle 40A of current. That means I will have to modify the PDB to add the extra capacity, e.g. adding additional power wires.
Without changing too much from the original frame design, and attempt to keep the Arris flavour, I decided to go with 12A ESC and 5040 setup, which I have been running on the ZMR250.
- Flight Controller: Naze32 with Cleanflight
- ESC: Blue Series 12A with BLHeli 13.1 (Oneshot Enabled)
- Motor: Cobra 2204 1960KV
- Battery: 4S 1300mah 45C and 4S 1800mah 65C
- Radio Transmitter/Receiver: Taranis and Frsky D4R-II
- FPV Camera: Sony SuperHad 600TVL (how to choose FPV camera)
- OSD: MinimOSD with KV Team Mod on MW-OSD Firmware
One great thing about this build is the PDB which gives me very clean wiring and much slicker look. This frame is very spacious, fitting all my usual electronics isn’t difficult at all. But as I was building it, I found the PDB can still be improved in term of design and functionality. Small detail like the solder pad for FPV camera signal is at the bottom of the board, which it should really be on the top. It doesn’t have traces specifically for 5V and 12V that links from one end of the board to the other, which would make life much easier (and cleaner wirings). Hopefully they will get some feedbacks and start developing the next PDB revision :)
Check out the frame review.
My absolute maiden flight. Only flew 15 mins, and then it started pouring down with rain. Got some vibrations at high throttle, will tackle that next time. Also the FPV camera mounting suffers from vibration… kind of distracting as well (see last 30 seconds of video)
And second flight. After some tuning it’s now very locked in.
First of all solder ESCs to the PDB, and showing off some brand new cobra motors, wasn’t easy to get hold of these! Checked motor spin direction with servo tester, before finalizing motor/ESC soldering.
I use cable tie to hold down the FC mounting plate, I didn’t like how flexible it was with the vibration damping balls. Mounted them on the arms and bottom plate. I didn’t cut the motor wires, so I just tuck it under the arms.
I am mounting the FC with double sided sticky pads. Not sure what the frame designer was thinking, the middle spacer is in the way to possible FC USB connector locations. That means I have to finish configuring the Naze32 before mounting it.
Brushed the FPV camera with electrical liquid tape. And put hot glue over the resonator to protect those tiny legs as it’s pretty easy to snap one (which happend to me once).
Now, working on the top plate. For video transmitter antenna mounting, I didn’t follow the manual, but using my favourite way – antenna extension lead. I cut the hole bigger on the top plate to fit the extension lead connector.
Install the rest of the electronics: OSD, VTX, RX, voltage regulator (16V – 4S to 12V).
Checked everything seems working fine. Now, the RX antenna trick. And a shot of the angled FPV camera. Not quite tilted enough for my liking, but that’s the max angle it can offer. That’s it! Total weight is just under 600gram excluding LiPo (with Gopro)
And to find out the best place for my LiPo battery, I needed to find the balance point. And finally a trick to avoid balance plug get sucked by propellers.
A few more close up shots.