After I had a few problems with the standard power module from 3DR and the ones from Hobbyking, like falling off resistors (overheated) and burned out BEC from voltage spikes, I finally designed my own PM modules. The sensor boards are compatible to Pixhawk, APM, Pixhawk lite, AUAV-X2, DroTek und CUAV Pixhack.
These modules are based on a true hall current sensor, so heat is no more an issue !!!
The sensors boards are able for continuous current of 100A for HS-100-V2 and 200A for HS-200-V2 (no time limit), the maximum over current is 1200A@25'C and 800A@85'C for 1 second.
Here some details:
The Sensor board is installed only into the positive main battery wire and the BEC should be installed as close as possible to the battery connector.
Quality control of the finished product:
To post here all the quality control during the production would be a very long story, so all I can say is, that it is carried out and recorded.
The final QC before the boards are shipped, is a setup with an FC (Pixhawk) and connected to MissionPlanner to check the calibration values for current and voltage measurement.
This final test result will be passed to the customer together with the order confirmation and shipment tracking number by e-mail.
REM: Which power module supplier out there actually use the PM to power up a real FC before shipment ?
So I hope everybody understands, that if I say "safety first"... then I mean it.
Why Hall sensor ?
Why only a few supplier use a true hall sensor for current measurement in an MR ?
Why output voltage to Pixhawk /APM is 5.35V and not 5.0V ?
Why the cable from UBEC to the sensor board is 4 pol ?
Why sensor board and UBEC are separated ?
Why is there an additional capacitor installed at the input of the UBEC ?
How can I get one of these boards ?
Hi Christian, the link below doesn't work: HTTP Status 404 Requested resource not available.
Christian Mauch said:
Hi Michael... the setup is explained on my website: http://www.mauch-electronic.com/manual
Got the package with the power cube, sensors and hubs all looks very very good.
Is there any printer friendly version for the manuals?
Christian Mauch said:
Hi Christian, Thank you for developing this current sensor module, I appreciate the workmanship and design. Have you tested this module at 200 amps, and high voltage such as 12s LiPO battery or 50 Volts DC?
This reference chart shows a temperature rise of 100 C above ambient while carrying 100 Amps DC.
I'm kind of new to all of this, could someone explain to me what all would I need to measure current and voltage for my drone?
@Darshain, voltage measurement of a battery is like a gas gauge; same as in your cell phone! Current draw can be used to indicate motor efficiency and if they are turning. P=I*E
Thanks for the reply, I'm planning to buy a couple of power modules for making measurements of current and voltage on a DJI Matrice 100.
( Current sensor 100A/12AWG) : http://www.craftandtheoryllc.com/store/002-pl-100-sensor-board/
Along with 2-6S BEC/1x5.35V (http://www.craftandtheoryllc.com/store/015-pl-2-6s-bec-1x5-35v/)
Would these work together?
And could you explain the difference between the BEC with 2-6S BEC/1x5.35V as compared to 2-6S BEC/2x5.35V?