Need coding help.

Hi,

that's a challenging project you're taking on

Perhaps it would be good to experiment with more basic things first, like the temperature sensor only, and gradually build coding knowledge.

The Arduino IDE comes with a set of example sketches. Try going through those first, and see if you understand the code.

Frederick

This may help, a video I produced a while ago

DHT22 temperature and Humidity Sensor with Arduino Uno and Ethernet Card (ENC or WizNet) (Instant weather Station)

also

Driving BIG loads with your micro controller - no isolation

Sense BIG things with your Launchpad or Arduino, OPTO Isolated inputs.

Drive BIG things with added safety. OPTO Isolators

and for programming start on arduino Fast Track to Arduino Programming

Hope this helps

Peter

So I have realized with further research and various replies and PM that this is more then just a simple code that I could walk through or figure out on my own. Are there any coders here that would be willing to be hired to do this project? If so please PM me and we can work out some details such as time lines and payments.

We may have scared you a bit with the overwhelming feedback, this was not intended

Most of what you want to do is not too difficult but will require a bit of learning on your part, If you pay someone to do this for you then you may as well go buy a ready made unit and where is the fun in that

as the heater is inside the enclosure you would not want it to be at mains potential so probably a 12 or 24V heater, this is easy to control using a relay or one of the circuits I showed above

the humidifier will probably be similar in that the main unit will be low voltage (Powered by a wall wart) so again relatively easy to turn on/off

to sense the temp and humidity, I have shown code above that uses a DHT22 sensor and an Arduino and is viewable from a smart phone or another browser

so learning how to control each components in turn and then combining them into your desired product will be a good learning exersize and very rewarding

If your willing, we can point you to the right path

Regards

Peter

Hi

I have to agree with Frederick on this, start small and build on this small start. As you work through one bit at a time you will very quickly build up your knowledge and you will find that you won't want to stop with one vivarium. You will find more projects around that you will want to tackle. If you are happy with the electronics side of things already then you are half way there already!

Mark

Yes it's a big project, but it's not a difficult or a particularly scary project.

There are lots of simple through to quite complex examples provided with the Arduino IDE, as well as Jeremy Blum's superb tutorials. Peter has already given you links to the wonderful stuff he has created and made available through this forum. Other people have posted lots and lots of things on this forum and all over the place on other blogs and forums. Google is your friend!

Trust me, once you make start - all you need is 1 Arduino board, a USB cable and the IDE loaded and installed on you PC and you are away - the Arduino board includes an LED already connected to one of it's output pins and the simple sample sketch "Blink" makes it flash. You can start you coding by changing this sketch and making the LED blink in different ways.

Go for it!

Neil

My advice is too use Jeremy Blums numerous arduino tutorials and the reference section on arduino.cc to get started. The project would be relatively simple If it were not for the wi-fi requirement, so perhaps leave this out at first and then add it in later when you have a little more experience. If you have any code you want checking or need advice, feel free to post it on the forums. We will try our best to help you where we can.

I ll be happy to help you and teach you... Please confirm list of components you have for this project once again with link of data sheet...

I hate to be 'that guy,' but:  If your snakes are waiting on this, my friend has snakes, they are quite sensitive to environmental params, you could get a pair of temperature controllers to manage your humidity and temperature and work on the uP solution at your leisure.  I got a controller for a hunny from ebay and a big SSR and put them into a cabinet.  I put a linear humidity probe at the end of a cable with a stereo jack.  I got the controller to interpret the sensor signum and scale as a temp sensor running form 0 to 100 C.   In a coupla hours I had my humidifier under PID control with DRO!

POTS to the rescue!  IIRC it's a Canon XLR connector I have the humidity probe on.  I was able to take one apart and solder the sensor to a terminus so that I can use POTS XLR extension cords if need be.  Sure is fun to watch the numbers bobble!  SP is displayed as well.

Very good points here. If you are going to set up a system like this I suppose you should do a dry run to make sure all the bits work properly, dont want your scaly friends overheating. I know they are cold blooded and need warming but we don't want to overdo it. Let us know hoe you get on!