2 servos

ashrafkhatri · Joined: 06 May 2008 Posts: 14

hi,
I am working on two servos. Both servos are working but i am stuck now.
I want to make a code with the following settings:

Note: these servos operate on analog input:
Condition 1: at analog input 0-10 both servos are closed.
Condition 2: at analog input 10-50, only servo 1 operates from position 0 to full, while servo 2 is remain closed.
Condition 3: at analog input 51-100, servo 1 is already fully opened and servo 2 is now operate from 0 to full for this range.

Kindly suggest me a good piece of code for the above said conditions.
thanks
Ashraf

oxo · Joined: 13 Nov 2012 Posts: 219 Location: France

School project ?

Mike Walne · Joined: 19 Feb 2004 Posts: 1785 Location: Boston Spa UK

This is not a do it for you forum, we will however offer guidance.

Show us how you control just the one servo.
Program needs to be complete and compilable.
Then we may be able to offer some help.

Mike

Ttelmah · Joined: 11 Mar 2010 Posts: 19552

There are also some strange terms being used. Talking about a servo being 'closed'?.
He must think about hysteresis. A voltage will not read as a simple stable 'number', and at the transition values like '10', you risk having the servo hunt.

There is basic 'operate a servo' code supplied with the compiler, and in the code library.

ashrafkhatri · Joined: 06 May 2008 Posts: 14

Let me do some more work on it. Then i will ask the same question with a written code if needed.
Thanks for your tip.
Ashraf

temtronic · Posted: Wed Aug 02, 2017 9:17 am

You should post a link to the servos you are using to help us help you.
'servo' means different things to different people. A 'servo' could mean a typical RC style 'hobby' servo, runs off 5 volts with NO feedback. To me a 'servo' means a heavy duty DC motor with gear trains and a 1024 optical encoder for position sensing. How you control the 'servo' will be based on the type of servo.

I see two 'functions' for your program

1st a 'control' function that determines which servo to operate based upon the ADC input value. This function is simple, read the ADC and have a 3 part 'switch'.
the 2nd function is a 'servo operation' function, where the selected servo is commanded to operate, I'm assuming from a second ADC input ??

Jay