BS2 and RC car Receiver

Miles. k

i do believe i posted something like this before but when i posted it, it wasn't very descriptive.

What im trying to do is have a Receiver for a Futaba Pistol grip controller connected to pin 15 on a BS2 and
then display the "duration" in the debug terminal so i can use it for a pulsout command for a HB25. the code i have is very simple but it doesn't work.....right.

' {$STAMP BS2}
' {$PBASIC 2.5}

time VAR Word

DO
PULSIN 15, 1, time
DEBUG HOME, time
LOOP

when i run the program and i pull the trigger on the controller it displays odd things like:

Casey Gross

it sounds like the controller uses a potentiometer; an rctime is what you should use to get the readings your looking for.

Post Edited (Casey Gross) : 1/1/2010 3:02:36 AM GMT

Miles. k

i tried this:

' {$STAMP BS2}
' {$PBASIC 2.5}

time VAR Word

DO
RCTIME 15, 1, time
DEBUG HOME, time
LOOP

but it doesn't seem to work because it still displays those weird little symbols when i try it

skylight

try

' {$STAMP BS2}
' {$PBASIC 2.5}

time VAR Word

DO
RCTIME 15, 1, time
DEBUG HOME, DEC time
LOOP

Miles. k

i tried that and now it displays numbers but.....they only change while there moving.

example: if the joystick was in the all the way down position, it would display "138" in the debug terminal, when i move the joystick to the up position in a fast movement..then numbers would get higher (139,150,160,ect.) but as soon as i stop moving the joystick the number in the debug terminal would go straight to "138".

thanks,
miles. K

Miles. k

WAIT i fixed it. all i had to do was switch out "RCTIME" for "PULSIN" and now it works great. but can anyone figure out how to combine this knowledge with 2 HB25's.

would it be like:

IF 15 > 750
THEN GOSUB forward
IF 15 < 750
THEN GOSUB backwards

Thanks,
Miles. K

skylight

sounds like you are almost there,now read the documentation for the HB25

Franklin

Don't the HB25's take servo commands in and doesn't the futaba put servo commands out?

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- Stephen

Miles. k

yes but my robot has tank treads so if i want to turn.........

W9GFO

I would think that what you want to do is read the pulses on two channels, the throttle channel and the steering channel. So that would require two PULSIN commands, each on a different pin with each value stored in an appropriate variable. Then, you need need two PULSOUT commands, one for each HB25.

Something like;

PULSIN 15, ThrottleChannelValue
PULSIN 16, SteerChannelValue

PULSOUT Left_HB25, (ThrottleChannelValue + (750 - SteerChannelValue)) MAX 1000
PULSOUT Right_HB25, (ThrottleChannelValue - (750 - SteerChannelValue)) MIN 500

Rich H

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The Simple Servo Tester, a kit from Gadget Gangster.