esc connection problem

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fabold9

Member
I have an eachine 250 racer bought from banggood i wanted to upgrade it with a new frame, but esc and flight controller are connected directly to the frame so i decided to buy a new flight controller, but i don't know how to connect esc to the flight controller because, as you can see from the photos, it has only the signal wire (without ground and power). Please halp meSnapchat-429324020077724376.jpg Snapchat-808268494935109748.jpg
 
GJH105775

GJH105775

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These ESCs are not using a BEC (or possibly only one is using a BEC). Your ground is likely coming from your PDB (grounding where it is getting power from the battery). So without the BEC, and with using the ground from the battery you really don't need any more than one wire, which is the white signal wire. You can de solder these wires if you so desire (or snip them off and insulate them), and jsut use the signal wire and one power wire either from an external BEC or one of the ESCs.

I assume that you know how to switch directions and wire the 3 phase side?
 
GJH105775

GJH105775

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fabold9 said:
And how can i power the control board?
Can i use the same ground wire from the battery for all the ESCs?
Click to expand...
BEC stands for Battery eliminator circuit. Basically just a step-down so that you don't have to have a second lower voltage battery for lower voltage equiptment. So it generally steps the power down to 5 volts for your flight controller, reciever and maybe FPV camera or other sensors.

The ESCs are powered directly from the battery using a power distribution cable/loom/board. Basically a big splitter to give each ESC power from the battery. As long as your FCB, ESCs, and camera have a common ground you are good. THe camera's power can be joined or seperate depending on the build.
 
F

fabold9

Member
GJH105775 said:
BEC stands for Battery eliminator circuit. Basically just a step-down so that you don't have to have a second lower voltage battery for lower voltage equiptment. So it generally steps the power down to 5 volts for your flight controller, reciever and maybe FPV camera or other sensors.

The ESCs are powered directly from the battery using a power distribution cable/loom/board. Basically a big splitter to give each ESC power from the battery. As long as your FCB, ESCs, and camera have a common ground you are good. THe camera's power can be joined or seperate depending on the build.
Click to expand...
So i have to power my fcb by the bec, and connect the signal wire of my esc to the fcb with the ground and the power of the bec?
 
F

fabold9

Member
I din't understand from where can i get the ground wire to connect next to the signal one on the fcb (the black one next to the white one)images.jpeg
 
GJH105775

GJH105775

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Altsickeness said:
Just get a build kit. Not much on the ER racer is worth saving.
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Providing you don't use cheap parts, which most everyone does on their first build. If you don't have a budget for better parts yet I'd stick with it and then upgrade when you realize this is something worth spending on hahahaha
 
Altsickeness

Altsickeness

Quad Addict
GJH105775 said:
Providing you don't use cheap parts, which most everyone does on their first build. If you don't have a budget for better parts yet I'd stick with it and then upgrade when you realize this is something worth spending on hahahaha
Click to expand...

I have a quad with just the ER 250 motors. I need to try a voltage filter because otherwise the video cuts out on heavy throttle. I think it might be crappy bearings and it causing high amp draws and Lots of interference. If the filter works then I'll say the motors are worth saving. That's about all though.

I have a complete kit that was $149 and it blows the doors off the racer in terms of quality, durability and performance. So a person would really have to go bottom of the barrel cheap to not be better then ER 250.
 
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