Let's Make Robots!

finding cheap RC ESC (speed controller)

I love RC ESCs. They are electronic speed controllers that you connect to a servo output on a RC receiver or a micro controller, and they give you full step free control over a big motor in both direction. Most of the ones made for RC cars work in the voltage range 6-8.4Volts, but there are several alternatives for people who plan to run up to 24 volt motors in almost constant stall at a gazzilion amps (read robot war contenders).

But I'm the eternal cheapskate, and wants the cheapest there is.. So far I've found this 


It costs $19 and comes as a kit, so I guess I have to solder it myself. Do any of you know of any cheaper ones?

My wanted specs are:

  • run in both direction (not plane type)
  • for brushed motor (not brushless)
  • cool if it has BEC (can supply regulated power for RC receiver or Microprocessor)
  • without break function (racing ESCs will stop the wheels if you go from full forward to full reverse)
  • really really cheap (since I need 4)
  • around 7Volts (I'm not fuzzy)

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Hi Guys,

I have been doing this for a while.

Source code is here https://launchpad.net/brushed

I have converted quite a few of hobbykings controllers. Jump on robowars.org/forum -> under technical chat is the thread. Its pretty long but worth a read if you are really cheap.

This is probably the cheapest one you can convert easily (Avr microcontroller for the moment) https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=15202

However the HK10 is the cheapest one I have done @ $5.15 for their "one time bonus offer", current favourite is the TPY1-25 that controller is fantastic. I am running RS550s on it @ 6S which is so far overspec its not funny and it barely gets warm.




Hey, thx for info! Can you reprogram ESCs with USBasp ?