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RCExplorer – DavidKeymaster
Matek just replied that the board can handle 6V on the 5V pads!
Woooohoooo! That means we can run the BabyPDB!RCExplorer – DavidKeymasterThanks for checking.
Is the ribbon cable needed in this case?
We just need the 5V from the PDB to the FC right? We don’t need the signal pads on the PDB that’s connected through the ribbon cable.
And have the servos be connected to the PDB VX.
That would save some hassle using the “fragile” ribbon cable and offer some more flexibility.Edit: Whops should probably have looked at the pictures I posted in the first post.
We also need the v-bat and current sensor. Still not that many wires.RCExplorer – DavidKeymasterHows the progress going on this mr @LitterBug? Any more pictures?
RCExplorer – DavidKeymasterWow you got that board fast! Where did you order from?
RCExplorer – DavidKeymasterHmm interesting thought about using the servo feedback wire to prevent burning of servos. Hmmm hummily hum hum hum. That shouldn’t be too hard to figure out.
If the FC is trying to move the servo but the feedback is reading the same value for say 3 seconds it stops giving PWM pulses altogether. That would stop the servo from trying to move, making it go “limp” so to say.
With the caveat that if the feedback is at 0V, which it never is unless it’s disconnected, the output should continue to work as usual. That would prevent the copter from crashing in case the feedback wire is disconnected during flight or if you don’t use servos with a feedback wire.Could potentially save some servos.
RCExplorer – DavidKeymasterHope it works 🙂
RCExplorer – DavidKeymasterAwesome work @jihlein!
Really great that you figured out the wiring.
Good to know that you can use betaflight for initial flashing. That makes life a bit easier. A bit annoying having to use another software, but it’s a lot better than it could have been 😀Wow, it’s fitting worse in there than I thought :/ I won’t have access to the boards/copter until next Friday, which is frustrating as I want to build, test and find solutions too. jihlein is having all the fun 🙂 A longer ribbon cable
But seriously it’s really great you guys are helping with this. I don’t have any knowledge of software and such. Plus it greatly speeds up the process of testing and selecting a new board.
@jihlein I think you want to fly at least the pitch axis in some sort of stabilized mode. It’s pretty squirrely in rate mode. Try it in both though. It might work a lot better in dRonin.
I think it could be a good idea for me to order some longer ribbon cables to see if I can’t mount the PDB on the lower deck. Just to try out. By a rough estimation, how long do you think the original cable is? And how long would the new one need to be? 🙂
RCExplorer – DavidKeymasterMoved the 405-STD setup posts to a new thread: https://rcexplorer.se/forums/topic/matek-405-std-for-bi-and-tricopters/
RCExplorer – DavidKeymasterI have a couple of sets on order. Hope they arrive sooooooooon
RCExplorer – DavidKeymasterAgree with Terje.
The dump on the product pages have been updated to work with 3.5.1 and Terjes diff is also fully working.12 September, 2018 at 13:13 in reply to: Slow-motion of how a bicopter transitions into forward flight #59462RCExplorer – DavidKeymasterAwesome testing Terje! I’m glad to be wrong in this case. It opens up for more possibilities when it comes to the control.
Pretty brave of you to hover it indoors 😀
Also awesome stand!RCExplorer – DavidKeymasterI’m leaning towards the Matek wing PDB + the 405-STD now 😀
I think that combo would be very nice.RCExplorer – DavidKeymaster@jihlein Awesome! Thank you very much 🙂 I have two boards on the way. Will test as soon as I get them.
RCExplorer – DavidKeymasterAwesome @jihlein!
Stupid that they don’t have an extra inverter on there for the telemetry :/
Also something you mentioned earlier. The 405-STD does not have an internal 5V regulator. It needs to be powered with 5V and we really want to run the servos on 6V. There are no specs on the voltage input range on the 5V but it’s using the max chip for OSD and that thing gets smoking hot even at 5V.The 405-STD together with the FIXED WING PDB FCHUB-W http://www.mateksys.com/?portfolio=fchub-w could be a pretty nice solution though. 4 different BEC’s. 3.3V for compass/GPS, 5V for the board and such, selectable 5/6/7.2V with good current capacity and 10V for VTX and such. Would be pretty neat. But I won’t get my hopes up. It might be too pricey.
RCExplorer – DavidKeymasterThe F411-WING looks really nice! http://www.mateksys.com/?portfolio=f411-wing
Unfortunately, it won’t fit in the baby tricopter. It would have been freaking perfect. One board only with PDB and what looks like a good BEC. -
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