Sunday, February 26, 2017

Kalman filter

In few projects I've needed the Kalman filter to suppress the noise and other inaccuracies especially from accelerometers. Below is a nice picture from a live stream of data transmitted by the ESP8266 LDR over websockets to an application server written in javascript. The data received in the browser looks like:

With red is raw data and with white is the predicted data after the Kalman filter was applied.

Inside of a 1000lx bulb LED

Since this Livarno bulb refused to work after few months of fine operation I decided to dismount it.

Power supply was covered in rubber and it take a while to clean it between the components.

32 LEDs are used for this bulb. I've tested few of them with a 5V power supply and are very bright (don't look at them since is not a nice feeling after that)

Here is the power supply. Still has rubber left between components.