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Registered Member #3315
Joined: Thu Oct 14 2010, 04:23PM
Location:
Posts: 156
I am trying to write a code to index a gear-motor (continuous rotation servo) a set number of degrees with an encoder. This will be used to control the "drum magazine" on my coilgun project
board is an Arduino Mega 2560
encoder has following pins A, A', B, B', Z, Z' gear-motor has standard servo connection v+, v-, and white
below is the sequence and goals of the program.
1) have a set "home" position that will initially align the mechanism when turned on 2) read state of button, when pressed.... 2a) rotate the servo a set number of degrees (360/13) (13 position indexer) 2b) stop and hold servo at set position. 2c) repeat every time button is pressed 3) have a time limit to reach position so that if there is a jam it will (hopefully) not burn out the servo
I have some experience with writing code for the Arduino, however basically none with encoder and motor control, I need a working example to play around with but have been unable to find one online.
I am at work right now but later i can post data sheet on the encoder as well as a little more information about my project to get some of you guys motivated to help me
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Aren't these Gray coded? IIRC the code always changes one digit on each rotation step, the idea is that you have an absolute reference if you have a copy of the code in memory.
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Indexing a gearmotor with Arduino
