Let's Make Robots!

brushless motor

ESC or Brushless DC Motor Controller, what's the difference?

I'm looking into building my own drone using a microcontroller, I want to use a brushless motor. I know you need a motor driver (controller) to control motors, but for brushless motors I had electronic speed controllers (ESC) come up in my research.

1.What is the difference between an ESC and a brushless motor controller?

2.How would they connect with my microcontroller? 

3. Are they both capable of running the motor in the oposite rotation?

Here is the ESC I looked at:

[solved...sort of... works... far from perfect] How to properly control (arm+calibrate+command) an HK-20 ESC with arduino?

--- Solution ---

UPDATE: The below solution is NOT 100% reliable, sometimes I have to repeat the 90-10-20 process quite a few times up until I have a proper the ESC properly armed/calibrated. And when I say a few times I mean up to quite a few minutes with battery unplug/re-plug in-between. But now that the craft is mostly finished (I probably just need to tweak the aft side of the skirt), I'll revise my code yet again and see what I can do about it.

ESC + L293 + Brushless motor

So, i've been having some trouble lately and I can't seem to find a solution on the web. I've managed to controll a brushless motor through and ESC and arduino with PWM. Nothing too dificult. What I need now is a way to controll an inversion of the motor. Like you know, changing two of the wires from the motor makes it turn the other way around.

Float, sail, tow, look small in the middle of a pond, harrass submarines
Hi. This is my first project post (but not my first project), so sorry if I've done anything wrong. I'm not sure if I'm OK to post this, as it is an RC model, but … Read more


What is the difference between a 30 amp esc or a 20 amp esc. Is it the input or the output that is different? 

Flies autonomously with directional control
Using a
I started this project quite a while ago.   My first inspiration came from a hobby parts site: http://www.hobbycity.com.  They advertised a new brushless motor … Read more
an example of a driver for a brushless DC motor without microcontroller
This is a continuation of my blog on the same subject. Please continue your commenting here.     I am the proud owner of a stack of scavenged hard drives. I hoped … Read more

Walzing Hard Drive Motors

Update: This page is just an archive. The real work is continued as a walk through. Please direct all your comments to that page.

I am the proud owner of a stack of scavenged hard drives. I hoped to find really fast, torqueless motors inside. But instead I found myself a project for my new found 555 knowledge.