Current Sensing

Introduction While working on the magnetic levitation project, I came across the problem of needing to measuring the current through the electromagnet so I could feed it back into the control system. The techniques here will apply to a wide variety of applications. The idea behind current sensing is very simple. I will use the … More Current Sensing

Control anything using your muscles – How to build an EMG amplifier

Attention: I have since improved upon this circuit. Version 2 is covered here. Introduction If you are a Star Wars fan like me, you probably wish that the Force was real so you could manipulate objects without touching them. What if I told you that the Force actually did exist and you had the ability to control … More Control anything using your muscles – How to build an EMG amplifier

System Dynamics of Magnetic Levitation Control System

Introduction The magnetic levitation (maglev) system is a classical controls problem. The system is composed of an electromagnet, a ferromagnetic mass, and a sensor to provide position feedback of the mass. In this blog post, we will derive a system of equations for the maglev system and develop a linearized model. System Dynamics The dynamics of the … More System Dynamics of Magnetic Levitation Control System

Mars | May 8, 2016

This is one of my favorite pictures I have captured so far. In my opinion, Mars is a much more captivating target than Jupiter or Saturn. Although the latter are certainly beautiful and have their own interesting features to observe, I think the fact that when we point a telescope at Mars and look through the … More Mars | May 8, 2016