I needed a cheap way to provide Wi-Fi to an Arduino for a project that I was working on. The ESP8266 is an amazing cheap Wi-Fi enabled micro-controller that I have started to use in some of my projects. You can find Arduino ESP8266 shields on ebay or Amazon by searching for “esp8266 arduino shield” for €5 to €10 which is far cheaper than any of the standard Arduino Wi-Fi shields which can be anywhere from €30 to €80! The…
The Smart Environment Monitoring (SEM) system is an Arduino and web based (PHP) system that monitors, records and analyses environmental metrics both inside and outside (using external service) of the room that the Arduino device is located in. The circuit schematic can be seen below. The main sensor used is an AM2302 which is a temperature and humidity sensor. The system also uses a photoresistor to measure light levels. Most Arduinos could be used to build this system, I used…
I needed an uninterruptible power supply for an Arduino Microcontroller. I wanted the Arduino to be powered by a 9V wall adapter with a backup 9V battery. When AC power is available the unit will draw power from the wall adapter, if there is a power cut the unit will seamlessly switch to the battery as a power source and back when power is available. I wanted various indicator lights as well such as during a power cut an LED…
I took an old Aritech CS350 alarm from 1994 and made it smart using an Arduino. I found a great instructable by Ambrose Clarke (http://www.instructables.com/id/House-Alarm-Internet-Dialer-With-Arduino-Reverse-E/) I fitted the alarm as normal to the Garage but I also ran an ethernet cable to the garage. This project was very easy to complete using an Arduino Uno, ethernet shield and a few stock parts. The alarm now sends emails when the alarm goes off and the Arduino acts as an online keypad….
This is project uses an Arduino UNO, an Ethernet shield, a relay and the TouchOSC app to control two lights from an iPad. The following video is an overview of the project. The following is a wiring diagram for the project: You will need to add the Z_OSC library to you Arduino IDE. The Arduino code can be downloaded from this link. You will need to change line 13 of the Arduino code to the IP address of your iPad….