I was (and hope to again) working on a PID loop for the dragon’s main light. The idea is simple- vary the heat lamp using a servo and rheostat. Some of you have expressed interest. Here are the photos of the servo setup. The code however is so bad I don’t even know where to start. If you get something working please let me know!
The servo and linkages work perfectly through the full 180 degree range. The issue is the PID code….
I haven’t posted in a while- I’m not MIA- not that I know of. I’m working hard on the PID portion of the new LCC. Its a great idea but tuning and testing is time consuming. I hope to have it wrapped up soon.
Wikipedia says that a proportional–integral–derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems – a PID is the most commonly used feedback controller. A PID controller calculates an “error” value as the difference between a measured process variable and a desired setpoint. The controller attempts to minimize the error by adjusting the process control inputs.
I wanted a way to have a “rotatable” counter to indicate that the LCC was still looping properly. I finally found something! A decade counter (as noted in an earlier post)!
Now instead of pulsing one led I have a “spinner” type of effect. I don’t have to keep track of where the “count” is….I just pulse it. Coding this would have been a nightmare. Of course wiring 10 LEDs is a mess but it’s a cool one.
I haven’t worked on the Tri-Temp project in a while. I am going to go through and update the code a bit to lower the memory usage based on what I’ve learned for the LCC projects.
The original LCC code will have an update posted soon too. Mostly memory updates and a few control changes. I wasn’t sure if I wanted to bother but since the original LCC is still running my lizard’s climate I figured why not.
I gave up on trying to drive the A6280 directly with the Arduino. macetech.com already did what I wanted but couldn’t do myself. They used the A6281 (which doesn’t come in a DIP package- only an SMC) on a nice little breakout board with a RGB LED. Yea!
The goal of the Lizard Climate Control (LCC) software is to control the climate of my lizard’s enclosure using the Arduino and other hardware components. It can operate independently of a PC. However it is capable of supplying diagnostic data via the serial port to an attached PC if needed. Continue reading “Lizard Climate Control Software Operation Description”→