August ← 2014 ← IoT and T

Connected thermometer

Aug

31

2014

Thingspeak is a very interesting site. It collects (and display) a lot of data from different sensors, contributed (of course) by end users. It is interesting to see what it is like to connect a just built thermometer using a Spark Core and a TMP36 temperature sensor to Thingspeak. Currently, it is measuring the temperature ...

Water level alarm

Aug

30

2014

The water outlet for the air conditioner was broken recently. The water get nowhere to go so we have to collect it in a tin bucket and empty it regularly to avoid overflow. An egg timer was tried and it is kind of annoying since the time for the water to collect to a certain level was not ...

OLED message board

Aug

27

2014

The low cost, small 3.3cm OLED display is fun to play with. The original one I bought has a built-in ROM for some retarded (Simplified) Chinese characters. The ROM is accessible via SPI and the display itself via I2C. Even though getting the characters from the ROM is doable, there is only a very limited ...