The hydroMazing controller is designed to operate ventilation fans for air circulation, water pumps, occasionally a humidifier, heaters, or any other appliance that is necessary to maintain an ideal environment for plants to grow. Typically, we DIY'ers would hook-up some relays to a microcontroller to achieve control. However, with hydroMazing, the system uses remote controlled wireless AC outlets, ensuring safer control than traditional relays. hydroMazing uses low-cost open-hardware modules and the ubiquitous microcontroller, the Atmega328, on an Arduino Nano*, offering the flexibility of customization and expansion. The sensor choices are endless, but I’ve narrowed it down to a few important and relatively inexpensive modules. A temperature and relative-humidity sensor, moisture sensors for soil, liquid temperature probe for hydroponics, a simple photocell. There are many other optional additions including the float switch or switches and flow-rate sensors.
In my previous article , I explain how to setup the Raspberry Pi to be a web server. I also demonstrate searching log files for "footprints" from the IP requests that have been made to your web server. Now, I would like to discuss protecting your web server from becoming a victim to a potentially malicious attack.
Security and Obscurity “In security engineering, security through obscurity (or security by obscurity) is the reliance on the secrecy of the design or implementation as the main method of providing security for a system or component of a system. A system or component relying on obscurity may have theoretical or actual security vulnerabilities, but... Continue Reading →
Plants don't need access to the Internet to grow. So what can a Raspberry Pi 3 with built-in WiFi and bluetooth do for hydroMazing? A connected hydroMazing can let us know what is going on inside our garden through a web-interface, email, or even, text-messaging.
It was two years ago when I decided to try using an Arduino Uno microcontroller to replace my individual Lux WIN100 Heating & Cooling Programmable Outlet Thermostat. These outlets control an appliance, such as a small heater or, in this case, a ventilation fan. A device that is plugged into the outlet turns on... Continue Reading →