Eric Smith
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  • Seabrook, TX
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Eric Smith's Discussions

Voltage Drop on Pixhawk Power module under load

Started this discussion. Last reply by Nauris Mar 9. 15 Replies

Voltage Drop on APM Power moduleI have introduced some voltage/current issue into my quad but I cant track it down.Here is the Breakdown of what I have:1) 30a 4 in 1 ESC SKY III (Timing High) 2)…Continue

AquaCopter BullFrog WaterProof

Started Nov 26, 2015 0 Replies

I have recently been building an AquaCopter Bullfrog. The goal is to build a waterproof drone that has about 2km range similar to my DJI Phantom 3 Professional. Overall the experiance has been a lot…Continue

Tags: FPV, AuquaCopter, WaterProof

 

Eric Smith's Page

Latest Activity

Nauris replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"Yeah, I had this problem and I couldn't figure it out more than year by ordering many different power modules, but in result problem wasn't with power modules  but with my CHEAP EBAY PIXHAWK!!! Please don't buy any NoBrand…"
Mar 9
John replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"I'm seeing the same issue here. I've posted some info at rcgroups here: https://www.rcgroups.com/forums/showpost.php?p=37049653&postcount=6 Has anyone figured out what the problem is? I'm seeing a 2-3V discrepancy between…"
Mar 9
Veikko Vierola replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"Hi, 20 minutes flight time with 2200g gross weight sounds quite much. Has the eCalc calculated the total weight correctly? You could perhaps reduce the fail safe limit to 9.6V for 3s lipo as 3,2V per cell is still safe for the battery. You could…"
Oct 15, 2016
John R replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"That Airbotpower board looks pretty cool and a nice all-in-one package. Very impressive design. I wonder if there are any US suppliers that carry it. I have not had the same problems with the Mauch sensor and my current readings are extremely stable…"
Oct 14, 2016
Luc Maximilien replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"I not had a good experience with the Mauch Ubec and current sensor. The current reading that appears on Mission Planner is not stable , it varies a lot , much more than the standard 3DR current sensor making the current data unuseful .Mauch told me…"
Oct 14, 2016
Sriram replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"thank you john"
Oct 14, 2016
John R replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"Yes I'm currently running the Mauch Power sensor and BEC on my Hexacopter and it works great! I'll be honest, the voltage drop is still there as soon as the load it applied (16.8V fully charged, drops to about 15.6-15.7 as soon as I…"
Oct 14, 2016
Hans H. replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"Link to power modules that are voltage accurate and current accurate? BEC ... is only a DC-DC step down (and maybe a filter)?"
Oct 14, 2016
Sriram replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
Oct 14, 2016
Sriram replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
Oct 14, 2016
Luc Maximilien replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"Current draw should be 21 A  with a good motor so with 10200 mAh 3S you should fly 28 minutes . With 27A and 10200 mAh 3S you should fly 22 minutes. So apparently your batteries are almost dead ."
Oct 10, 2016
Crady von Pawlak replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"Hi Eric.  If your ESCs are getting hot then the first thing I would do is lower the timing to Med. Low or even Low (higher timing rates normally work better with high kv motors.) Regarding voltage loss and flight times, are you starting with…"
Oct 9, 2016
Nauris replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"Same problem, using many power modules.."
Oct 9, 2016
John R replied to Eric Smith's discussion Voltage Drop on Pixhawk Power module under load
"Hi Eric, I know it's been awhile since this post, but I've just started experiencing the same issue with my Hexacopter. I think I've been having the problem all along, but I've just added a FrSky Voltage Sensor that give me…"
Jul 26, 2016
Eric Smith posted a discussion

Voltage Drop on Pixhawk Power module under load

Voltage Drop on APM Power moduleI have introduced some voltage/current issue into my quad but I cant track it down.Here is the Breakdown of what I have:1) 30a 4 in 1 ESC SKY III (Timing High) 2) MT4006 Motors 3) (2) 3s 5100 3dr Batteries 4) 14x5.5 CT props 5) 14 gauge wire 6) APM Power module 7) Auqacopters bullfrog frameThe weight all in is 2200 grams.Here are my calculation from eCalc…See More
Dec 26, 2015
Eric Smith replied to Sergio Vial's discussion Pixhawk Power module problem
"Did you ever find a resolution?"
Dec 5, 2015

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Building and Flying waterproof drones
Hometown:
Seabrook

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