Arduino based shower time logger

Paul wanted to know time spent on shower each day so he built Arduino based shower time analyzer. It simply checks times when someones enters and leaves shower with RFID reader. Time is counted with precise RTC clock. It wouldn’t be fun if this wouldn’t be connected to internet. So Arduino is also featured with Ethernet shield. With thingspeak API it was really easy to publish data on internet. Now watching charts you can decide weather you are wasting water or not. Continue reading

Monitor temperature on your web page with ThingSpeak

This project is build around mbed platform which features LPC1768 ARM Cortex M3 microcontroller. IT reads temperature from DS1620 IC. mbed reads correct time values via Network Time Protocol (NTP) and then logs temperature values to ThingSpeak. ThingSpeak is a great and open application platform that allows users to upload various data by using a web service. It already provides a nice chart API that can be embedded in to your web page for real time data visualization. Check out for more ways to send data to ThingSpeak. Continue reading