RobotWars101

That is very interesting.

Did you, by any chance, get a part number from the 8-pin chip on the blue ESC board above? The Dorman servo board? Is that the only active part on the board, or is there a small transistor too?

Mark

Don't most speed controllers have one built-in?

I know the Dasmikro has one, also some brushless esc.

Hi, Has anyone tried these motors? https://www.aliexpress.com/wholesale?catId=0&initiative_id=AS_20190501071600&SearchText=gear+motor+6mm They are getting quite cheap and super, super tiny, maybe good for fleaweights or antweight? Would the (plastic) gearbox destroy itself instantly if we pu...

It's easy to preach after the fact... I usually test my electronics with a multimeter (for short circuit) bench supply (for functionality) before plugging a lipo in. The Lipos give enough current to pop the magic smoke out of any faulty electronics. That said, I've never had the lipo itself catch fi...

George- I will try enabling braking to see what happens. I didn't realise that braking was a useful feature, I didn't use braking on my previous robot (Betsie, which has a sort of fly-by-wire system anyway) and I've not implemented braking yet in the new speed controller (but the hardware is capable)

Sounds more like a poor design or poor choices of parts, than a manufacturing defect. A voltage drop of 2V at the kind of current we'd see through a N20 is extremely high, did you have access to an oscilloscope? Maybe the duty cycle is less than 100% even when the stick is at the extreme position? -...

Sounds like there is enough interest for me to knock up a batch. I'll let you know when they're ready and we can sort out the details (it will not be really soon, I need to order more parts, the boards are in the post).

There are also a few more tweaks to the firmware that I'd like to do.

Do you have a link to the datasheet?

Hi, It seems the Malenki-ESC is now working a lot better. * It does bot :) - I've built part of my next bot and it's driving just fine with 2 N20s. * I solved the voltage regulation problem which caused 2 mcus to be destroyed If I make a *small* number of these boards, does anyone want to test one? ...

It is probably a brushless motor. I'm fairly sure that the 4th wire is a centre-point wire in the Y configuration of the brushless. It could be difficult to identify the wires. I suggest something like this: * Measure the resistance between each pair of wires * The one with the lower resistance to t...