500-2500usec Servo Range ??

[ed_jza80]

Hi Guys,

total MWC noob here. Ive just bought myself a 'Flip' board ( http://www.rcgroups.com/forums/showthread.php?t=1764146 ) to use as a stand alone gibal (servo) controller.

the servos are 180deg capable digital (non programmable)
Operating Angle: 45 Deg. one side pulse traveling 600usec
Direction: Clockwise/Pulse Traveling 1500 to 2100usec
the servos are in a 2:1 pulley (reduction) setup and i need as much range as possible

now the MWC seems to only allow 1020us to 2000us with a 1500 midpoint

is there a way to program/hack the multiwii code to use a range of say 500-2500usec??

Ive read a bit here and there about a servo stretcher mod to MW 1.7, and a few noises about something similar for 2.1, but nothing firm, nor functional

Is this a realistic/achievable mod to the existing 2.1 code? Anyone done it / tried it?

Id be keen to give anything a go at present as the limited 90deg range is really disappointing!

cheers
ed

[timecop]

This doesn't help you, but 32bit/baseflight platform can do hardware PWM with 1us precision for any range from 1 to 2500 (or whatever) us at any period (50-499Hz). I heard it even works as a gimbal controller, too. With gains you can change at runtime, instead of recompiling and reuploading for 20 minutes.

[haydent]

bump

[timecop]

The only sensible answer for 2013 has already been posted

[Alexinparis]

is there a way to program/hack the multiwii code to use a range of say 500-2500usec??

mis makes it possible with hardware PWM on mega board recently.
with this option: #define MEGA_HW_PWM_SERVOS
not currently possible on other proc