Question Drilldown - Kalman Filter

The Topic

For this drilldown, we will take a very high-level look at a technique used in robotics, control systems, and any other applications involving sensors: the Kalman Filter.

NOTE: No math will be covered in this article. There are plenty of great resources for learning the math behind the Kalman Filter. Think of this article as a primer.

The Q&A

What is a Kalman Filter (KF)?

The KF is an algorithm used to …

more ...

Question Drilldown - Processes, Threads

This is the first post using a format that I have been wanting to try out for a long time. The idea is to catalog the questions that might be asked when first learning about a topic. By reviewing these questions, hopefully newcomers can learn a great deal and the more experienced can brush up a bit. The goal is not to exhaustively review every detail on the topic but rather provide just enough information …

more ...

Furnace Debugging

Date Tags hardware

A few days ago, the blower motor on my Carrier Weathermaker 9200 furnace stopped working. Luckily, this model of furnace provides quite a bit of debugging information printed on the inside of the door. It was very straightforward to test the blower motor and confirm that it was not the source of the problem. After a bit of poking around with a multimeter, the only remaining possibility was the blower motor relay.

Resoldered Relay Trace on Control PCB

This furnace is …

more ...


Hi, I am Jeff Rimko!
A computer engineer and software developer in the greater Pittsburgh, Pennsylvania area.