FMA CoPilot sensor DC supply

I was preparing RS-232 plugs for connecting my high wings to the fuse of my Kadet Senior UAV (to get rid of the cable salad when mounting my wings. When I had to wire the DC power for the FMA CoPilot sensor, a question came suddenly: what DC should I feed the CoPilot sensor?Since the sensor is connected directly to ArduPilot in version 2 of the soft, and since the CoPilot module (not sensor) is normally powered from the Rx through the servo connections at +5VDC, I expected the CoPilot sensor to get +5VDC too.To make things sure (ie to see it by myself), I plugged an Rx, battery, FMA Copilot module to Rx channel 1, sensor to adhoc FMA cable, and measured the sensor connector pins.Result is following and somewhat unexpected:- wire 1: GND. It's the RED wire!- wire 2: +3.3VDC- wire 3: +1.63v (x or y data)- wire 4: +1.63v (y or x data)So the FMA CoPilot module (not sensor) has a DC/DC 5v/3.3v step down converter on board.This will help me wire the sensor correctly, especially to power it with +3.3v.My question is following: in the normal ArduPilot 2 settings, are you guys powering the sensor from ArduPilot with its +5VDC ? If yes, do you think the sensor is able to handle 5v in the long term? If no, do you use the daughterboard as presented here?Second thought: for all those using the CiPilot module and looking for a +3.3VDC supply for their GPS chip, there's maybe one usable in the FMA module to sensor output. I do not know if it is able to draw the necessary current for the GPS, but I am sure someone will find out !!!

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • 3D Robotics
    Yes, we power the sensor with +5v DC. We haven't seen any problem with that. These things tend to be pretty tolerant of voltage range.
This reply was deleted.

Activity

DIY Robocars via Twitter
RT @donkey_car: Human-scale Donkey Car! Hope this makes it to a @diyrobocars race https://www.youtube.com/watch?v=ZMaf031U8jg
Saturday
DIY Robocars via Twitter
Saturday
DIY Robocars via Twitter
Jun 16
DIY Robocars via Twitter
RT @GrantEMoe: I won my first @diyrobocars @donkey_car virtual race! Many thanks to @chr1sa @EllerbachMaxime @tawnkramer and everyone who m…
Jun 13
DIY Robocars via Twitter
RT @gclue_akira: JetRacerで自動走行したコースを、InstantNeRFで再構築。データセットは別々に収集 #jetracer #instantNeRT https://t.co/T8zjg3MFyO
Jun 13
DIY Robocars via Twitter
RT @SmallpixelCar: SPC 3.0 Now the motor also works. This car is doable. I just need to design a deck to mount my compute and sensors. http…
Jun 13
DIY Robocars via Twitter
RT @SmallpixelCar: My new car SPC 3.0. https://t.co/CKtkZOxeNQ
Jun 7
DIY Robocars via Twitter
RT @SmallpixelCar: High speed at @diyrobocars thanks @EdwardM26321707 for sharing the video https://t.co/o4317Y2U1S
Jun 7
DIY Robocars via Twitter
RT @SmallpixelCar: Today at @RAMS_RC_Club for @diyrobocars. Used @emlid RTK GPS and @adafruit @BoschGlobal IMU. Lap time 28s https://t.co/R…
May 28
DIY Robocars via Twitter
May 15
DIY Robocars via Twitter
May 14
DIY Robocars via Twitter
May 13
DIY Robocars via Twitter
RT @f1tenth: Say hi to our newest #F1TENTH creation for @ieee_ras_icra next week in Philly. It’s going to be huge! 😎 🔥 @AutowareFdn @PennEn…
May 13
DIY Robocars via Twitter
May 11
DIY Robocars via Twitter
May 8
DIY Robocars via Twitter
RT @SmallpixelCar: Noticed my car zigzagged in last run. It turned out to be the grass stuck in the wheel and made the odometry less accura…
May 8
More…