Musings

Project Musings

The Works of Steven Green

We live in a house built in the 60's, and we close off some rooms we rarely use to conserve energy. This year we have been tracking temperatures due to the installation of a new heating system. Wanting to collect more detailed measurements, I am creating a sensor network to collect temperatures auto...

Electronic measurement experiment continues

Inspired by the short-comings of my first locked-in amplifier experiment, this is my plan to revisit the subject.

My main oversight in the first experiment was not quantifying the difference between measurements, both with and without noise, and to what degree the noise would have influenced out...

Electronic measurement experiment

Derived from Microchip’s AN1115 application note, this experiment implemented a locked-in amplifier circuit and C firmware running on a microcontroller to measure a resistance.

Initially implemented by Microchip using a dsPIC, I ported the logic to a PIC32 running on an Explorer 16 Development ...

A Portable 4-point measurement unit

While researching resistive type Graphene sensors, I needed to demonstrate their portability. I implemented a battery powered 4-point measurement unit to interpret sensor readings.

I created the measurement board leveraging an Analog Device AD7793 IC. This chip delivered most of the required fu...

Research into explosive detection

From 2010-2012, as graduate student in mechanical engineering at the University of Massachusetts Lowell, I researched resistive sensors. These Graphene sensors were being tested for thier ability to detect chemical traces of explosives. I fabricated and tested sensors coated with Graphene using phot...