Posts: 918 Threads: 83 Likes Received: 533 in 271 posts Likes Given: 498 Joined: Jan 2016 Reputation: 30 I have been using 450mah 3S on my 130 airblade assault, and the batteries have the jst connectors on them as well, I was concerned about the same thing, but like you figured it must ok as that is how the lipo came, to date, never had a problem, however, my 4S 500mah lipos came with XT30's. • Posts: 2,416 Threads: 51 Likes Received: 1,861 in 1,175 posts Likes Given: 3,315 Joined: Mar 2016 Reputation: 74 16-Aug-2016, 10:38 AM (This post was last modified: 16-Aug-2016, 10:41 AM by sloscotty.) I've finally made good progress on the build. This build is much more complicated than my 160 - space is extremely tight so it has required much more advanced planning. To remind you the space I am working with: Note that I am mounting the FC upside down (already set in BetaFlight). So almost all the wires have to fit between the FC and PDB. (The wires for the LEDs are soldered to the "bottom" of the FC, so will end up between the FC and the top plate.) Here's where I am so far on the FC: The left side of the first photo above will be facing the front of the aircraft. The lower single pin is for powering the FC, and will be drawn from a 5V switch pad on the PDB (see below). For photos and info on how I did the pins for ESC to FC connection, see: http://intofpv.com/t-custom-right-angle-header-pins I am still not sure where the micro minimOSD will fit, so I am waiting until I complete the PDB wiring (almost there) and a test fit before doing any more soldering on the FC. Next comes the motor/esc setup.... To make sure the esc's were out of the way of PDB, standoffs, camera mount etc, I had to place them very close to the motors. I decided to use the "wrap-around" method of soldering the motor wires to the esc. So the sequence was: remove the heat shrink, remove the esc motor leads, test fit, cut the wires to length, keep fingers crossed on uniform wire order on motors (preferring to take care of rotation direction with soldering instead of BLHeli settings), solder, test rotation, determine motor order and mark (hash marks=clockwise), heat shrink, test fit again, cut power leads to length, etc, etc... I saved the esc labels from the old shrink wrap and put them back on the esc's - why? Uh...I think they're pretty...? I also wrote myself a reminder because I had to stop and go to work and I'm an old guy..... (the "servo lead" note refers to moving the ground pin on the esc next to the signal pin to match what I did on the FC - see earlier link above) You will notice in the photos above that preliminary soldering and tinning on the PDB was already done. Here are a couple more photos on preparing the PDB. The left side of the first photo faces the front of the craft. The camera is very close so I soldered directly to the DemonCore (top three holes). In the next 5 holes, I soldered a round-pin socket strip - thats VTx and vid in/out for the OSD (second photo shows power and ground leads for OSD which I left long, because I'm still not sure of placement). Notice that I soldered a lead to the unused 5V pad next to the 12V switch for the VTx - this will power the FC. Now comes the fun part - I need to get the motors and PDB mounted for soldering the esc's to the PDB. This requires a lot of steps, because I am using the 3D-printed (nylon) crash protectors on the frame. The screws for the motors, PDB, and all standoffs go through these protectors, and the zip-ties holding the esc's fit "inside" the protectors. That means I have to strap the esc's to the arms before adding the protectors and bolting the motors. (Oh, and don't forget to tin leads and swap pins!) The photos below illustrate the sequence. (Sorry about the lipo strap Oscar - I tried, but they were too long. I will use them in another build - promise ) By the way, the nuts holding the PDB down will be replaced by standoffs once I'm ready to mount the FC. So now I'm ready for soldering the battery lead, and the esc's - but dang it! I've gotta go take care of my girlfriend's dog and then go to work. More soon... Posts: 1,290 Threads: 67 Likes Received: 713 in 473 posts Likes Given: 1,216 Joined: Mar 2016 Reputation: 23 "Damn the torpedoes!!! Full speed ahead!!!" Posts: 2,416 Threads: 51 Likes Received: 1,861 in 1,175 posts Likes Given: 3,315 Joined: Mar 2016 Reputation: 74 • Posts: 1,290 Threads: 67 Likes Received: 713 in 473 posts Likes Given: 1,216 Joined: Mar 2016 Reputation: 23 Doesn't that just suck???? However......I guess it's "work" that enables us to have "play time"....necessary evil I suppose. Anyway, very nice work so far! "Damn the torpedoes!!! Full speed ahead!!!" • Posts: 2,416 Threads: 51 Likes Received: 1,861 in 1,175 posts Likes Given: 3,315 Joined: Mar 2016 Reputation: 74 Posts: 1,290 Threads: 67 Likes Received: 713 in 473 posts Likes Given: 1,216 Joined: Mar 2016 Reputation: 23 You sir, are a better man then I....I thought about OSD on my 160, but I couldn't find a way to secure it properly without the props nicking it with any shift at all. The only thing I really needed anyway was battery voltage and I am getting that through telemetry back to the TX. Looks good Scotty!! "Damn the torpedoes!!! Full speed ahead!!!" • Posts: 2,416 Threads: 51 Likes Received: 1,861 in 1,175 posts Likes Given: 3,315 Joined: Mar 2016 Reputation: 74 (18-Aug-2016, 12:10 PM)sirdude Wrote: You sir, are a better man then I....I thought about OSD on my 160, but I couldn't find a way to secure it properly without the props nicking it with any shift at all. The only thing I really needed anyway was battery voltage and I am getting that through telemetry back to the TX. Looks good Scotty!! Thanks! Yeah, the next time I do a build this small, I'll probably use a PDB (or FC) with integrated OSD - like the RROSD or PowerOSD (that's on my 160). Only thing I don't like about those two is having ESC pads on only one edge of the board. The demoncore has both +/- on both edges - that made the wire arrangement much easier and cleaner. • Posts: 1,290 Threads: 67 Likes Received: 713 in 473 posts Likes Given: 1,216 Joined: Mar 2016 Reputation: 23 I didn't think about using an integrated PDB until I had it half assembled.....by that time, I was too close to getting it in the air to back up. "Damn the torpedoes!!! Full speed ahead!!!" • Posts: 947 Threads: 66 Likes Received: 350 in 248 posts Likes Given: 164 Joined: Apr 2016 Reputation: 34 18-Aug-2016, 01:42 PM (This post was last modified: 18-Aug-2016, 01:42 PM by oyvinla.) You also have a combined FC, PDB and OSD: In the description, they have both PAL and NTSC boards. I'm not sure if you can mix PAL and NTSC on them as I have never tried one of those boards. And the quality? could be good, could be bad. Who knows With current sensor: http://www.thanksbuyer.com/hglrc-v3-arco...s-6s-49572 Without current sensor: http://www.thanksbuyer.com/fpv-f3-6dof-f...v2-1-49568 Posts: 2,416 Threads: 51 Likes Received: 1,861 in 1,175 posts Likes Given: 3,315 Joined: Mar 2016 Reputation: 74 (18-Aug-2016, 01:42 PM)oyvinla Wrote: You also have a combined FC, PDB and OSD: In the description, they have both PAL and NTSC boards. I'm not sure if you can mix PAL and NTSC on them as I have never tried one of those boards. And the quality? could be good, could be bad. Who knows With current sensor: http://www.thanksbuyer.com/hglrc-v3-arco...s-6s-49572 Without current sensor: http://www.thanksbuyer.com/fpv-f3-6dof-f...v2-1-49568 Yah, I'm not brave enough for one of these... (maybe after your review...) In another thread, someone linked this: http://www.banggood.com/Realacc-HUBOSD-E...68098.html For $15, I'll give it a shot. If it flakes out, I've still got a PDB and can add MMOSD for $9 - I can live with that. If it works, great! • Posts: 2,416 Threads: 51 Likes Received: 1,861 in 1,175 posts Likes Given: 3,315 Joined: Mar 2016 Reputation: 74 22-Aug-2016, 02:12 AM (This post was last modified: 22-Aug-2016, 02:14 AM by sloscotty.) Posts: 1,290 Threads: 67 Likes Received: 713 in 473 posts Likes Given: 1,216 Joined: Mar 2016 Reputation: 23 That thing looks GREAT Scotty! Very very nicely done. If it flies as good as it looks (and I suspect that it will) you're gonna have a real winner there! I can see right now that I am going to have to give serious through to a 3D printer! Can't wait for the maiden! "Damn the torpedoes!!! Full speed ahead!!!" Posts: 2,416 Threads: 51 Likes Received: 1,861 in 1,175 posts Likes Given: 3,315 Joined: Mar 2016 Reputation: 74 (22-Aug-2016, 03:09 AM)sirdude Wrote: That thing looks GREAT Scotty! Very very nicely done. If it flies as good as it looks (and I suspect that it will) you're gonna have a real winner there! I can see right now that I am going to have to give serious through to a 3D printer! Can't wait for the maiden! Thanks! I just hope the magic smoke stays in for now - lots of wires in a very small space... • Posts: 918 Threads: 83 Likes Received: 533 in 271 posts Likes Given: 498 Joined: Jan 2016 Reputation: 30 very nice Scotty, great job ! |