Servo Programming

[KarlYoung]

Hello,

I’m creating a project using servo motors, and have created code that works within the simulation of Flowcode. However when I compile to chip and operate the program, the servo doesn’t quite do as suspected.

On my program I am using a simple potentiometer and returning the byte value to set the position of the servo. On the simulation the servo turns a full 180degrees as it should with byte value from 0-255. But on the real life servo it only turns around 90degrees.

I am using a pic161937 and controlling a servo capable of a full 180degrees rotation.

I hope somebody could please help me out, and tell me what’s wrong.

[medelec35]

Hi KarlYoung,
Welcome to the Matrixtsl forums.
It would help us to help you if you posted a flowchart.
When you reply, to add attachments just select attachments tab.
Select Add files, then browse to either .fcf or .fcfx depending on Flowcode version you have.

[KarlYoung]

Here is the program:

ARM.fcfx

(9.97 KiB) Downloaded 215 times

[Benj]

Hello,

The first thing I noticed is you have two servo controller components, these use dedicated hardware so you can only currently have one of these. I've changed your program so that both motors are now controlled via a single controller component.

I've also added while loops in between the AutoMoveToPosition macros to ensure we wait until the servo has correctly moved to position.

Finally your movements were 255 (180 degrees) and 128 (90 degrees) so this explains why you are only getting 90 degrees of movement. I've now changed this to 255 and 0.

ARM.fcfx

(12.17 KiB) Downloaded 207 times

Let us know how you get on.