11. Adjust the variables in the code to suit your liking and crop of choice. You can change the light on/off cycle here:

You can adjust the temperature and alarms here:

And:

You can surf around in the code and find the other items you can easily modify, add and remove to make your Urban Kitchen Garden work exactly as you wish.

Everything is endlessly customizable :)

Start growing!

You can start with any grow media you like but I recommend simple potting soil. It is cheap and works great.

Small greens like lettuces etc work great but you can also grow dwarf tomatoes, peppers, and so much more. Just google "dwarf" then the name of the crop you are interested in. There is likely a variety already developed :)

Share your modifications, builds, changes, code, ideas and anything else back with the community. It truly helps move the world forward when we all collaborate and share.

Best of luck with your build and enjoy growing your own food wherever you are! It is truly rewarding.

Optional items:

1. Heating/cooling- You can add an H-Bridge instead of the relay to control the peltier. This will allow for cooling and heating of the chamber. Just remember to get one capable of the amperage your peltier will draw as well as widen the hysteresis in the code to a value which does not allow for rapid cycling of heat vs. cooling.

2. Watering- Add a peristaltic pump to perform automated watering of your plants. I found a fixed length cycle to work best with restriction on how often it can run. You want to avoid any chance the unit will flood your plants :) A simple float switch on your reservoir can also be added to alert you when to refill the tank.

Pump I used:

Float Switch:

3. Humidity Control/addition- Should you find you need more humidity or would like to simulate dew at night etc you can add an ultrasonic fog/mist generator to the reservoir and run a tube back in to the chamber. A very tiny fan can be used to push air into the reservoir whereby forcing the mist into the chamber (do not run the mist through the fan)

As the entire chamber is sealed in my design I found almost no moisture ever escapes so the grow area did not need additional moisture in my case. Here is the one I used: