Tag Archives: current

T-Motor MN1804 2400kv with 6045 propeller test

Posted by on May 18, 2015 No comments

I bought the T-Motor MN1804 2400kv for my SG Acro quadcopter about two months ago. It is something between the smallest T-Motor MT1306 and the bigger MN2206. Weight is only 16g. Most of the time I have used these motors on my quad with a 5×3 carbon propellers. Yesterday I decided to put 6045 plastic props and I was amazed. It flies much smoother and it is very quiet too. I was not sure if these small motors can handle 6” propellers on 3S battery, but that was not a problem. After an acro flight with lots of flips the motors were barely warm.

A bit more data: AUW is 335g with 3S 1300mAh battery. Copter hovers on about 33-35% throttle. Current is 5A at hover, which makes only 1,25A per motor. Achieved a 12min acro flight on 3S 1300mAh.

IMG_9842

How many amps (A) draw a flight controller and/or a receiver

Posted by on April 13, 2014 No comments

Today I saw a question on the hobbyking.com if the BEC of an Afro 30A ESC could power the famous KK 2.1.5 flight controller and a receiver. The BEC of the Afro ESC is rated for 0.5A. But on the Hobbyking site there was no information how many amps the KK 2.1.5 and a connected to it receiver draw. So I take my Turnigy Watt Meter and measured the current to my KK board, receiver and my HK Multiwii and Megapirate flight controller. Here are the results:

KK 2.1.5 / KK2.0 board 100mA = 0.1A
HK Multiwii Megapirate AIO 100mA = 0.1A
HK Multiwii Megapirate AIO with Ublox GPS 180mA = 0.18A
FrSky 8CH 2.4G Receiver 100mA = 0.1A

 

The answer of the question: Yes the integrated BEC of the Afro 30A ESC can power the KK board (or the HK Multiwii AIO board) and a receiver, as both draw 0.2A.