brushless speed control

[jetpr]

i need help how to use brush less speed control with picbasic pro
to run the motor by emulate rc radio.

[Charles Linquis]

I assume that your motor already has commutation circuitry. In that case, you need to build a 'buck' converter and use a PIC with a hardware PWM port to drive the FET. If the motor has a tachometer output, you will need to drive the high side (using a P-channel FET), because most tachometers are ground-referenced.

[jetpr]

no am using a castle brushless speed contol i need to send pulse to the r/c connector to made run the motor like connect to a r/c radio

[Acetronics2]

Hi, JetPr

Long time we didn't hear from you ...

So, do not loose our good ol' habits ...

I understand from your post you have a brushless ESC and you need a servo signal generator to drive it without using a R/C set ???

is it true ??? ...

sooo ...

http://www.rcgroups.com/forums/showthread.php?t=1151221

http://www.picbasic.co.uk/forum/showpost.php?p=81010&postcount=5

or simply GOOGLE " Servo driver " ... TONS of answers ( W/ 555, 4011, 324 ... Pics, Atmels, Freescale ... )

and from a computer

http://www.rentron.com/PICX5.htm

Alain

[jetpr]

Thanks for help

[jetpr]

no work PULSOUT PORTB.2,255 i use all number from 0 to 1000 and the speed control no start the motor

Thunderbird 18 from castlecreations

[Acetronics2]

no work PULSOUT PORTB.2,255 i use all number from 0 to 1000 and the speed control no start the motor

Thunderbird 18 from castlecreations

May be simply a look to the user manual ??? ...

http://www.castlecreations.com/support/documents/Thunderbird-18-user-guide.pdf

and another look to general R/C signals values ...

From the time you " play " with those toys you should know all that.

NOW ... not a PbP issue at all !!! ... for sure

Alain

[jetpr]

how i made the picbasic pro to do this

The ESC requires a 50Hz carrier signal between 1 millisecond and 2 milliseconds to operate. 1ms is zero throttle and 2ms is full throttle. You will not need to program the speed controller unless your robot requires a different voltage cutoff, brake disabled, or motor rotation direction

[malc-c]

how i made the picbasic pro to do this

The ESC requires a 50Hz carrier signal between 1 millisecond and 2 milliseconds to operate. 1ms is zero throttle and 2ms is full throttle.

Which is a standard R/C PPM signal. 1-2ms pulse repeated every 20ms