I use MultiWii for my quadcopter. But I had a problem. My transmitter was not able to send values in the full range (1000-2000), so i had to scale the value from the center point (1500) up, and down.
Replace the fraction
22/20 with whatever scaling value you want, and replace
THROTTLEPIN with whatever pin you want to scale.
Here are the changes I made (
RX.ino in MultiWii 2.2):
@@ -110,8 +114,13 @@