Interfacing DS28EC20 with Arduino
DS28EC20 is a 20Kb 1-Wire EEPROM chip from Maxim. Like all other 1-wire devices, only a single pin is needed […]
Lighting for Project Photos
Since I do not have a DSLR camera, taking photos for my projects under normal room lighting can be quite […]
On RMS Voltage Measurement
Just because you are using a true RMS multimeter does not automatically mean you should always trust the readings of […]
Accurate Milliohm Measurement
Most of the multimeters do not offer resistance measurement in the milliohm range. In most meters a typically Ohm range […]
Video Card Capacitor Failure
One of my computers has been unstable for quite some time now. It had been crashing and freezing up once […]
RSA SecureID Teardown
One of my RSA SecureID tokens had recently expired, so I decided to do a teardown to see what is […]
Arduino Robotics – A Short Review
Apress was kind enough to send me a copy of their recently released book “Arduino Robotics” a few weeks ago […]
RF Link 2400bps Receiver Output Buffer
I recently dug up two sets of RF link transmitter/receiver modules from Sparkfun. I got these RF transmitters and receivers […]
Wireless Woe Solved
As I mentioned a couple of weeks ago, I had been having some issues with my wireless connection at home. […]
Simple Current Transformer
The other day, I needed to measure the AC current of my water heater without having to disconnect the wiring. […]
2701HG-B Issues
It seems that the 2701HG-B gateway AT&T uses for its DSL customers has some issues with its wireless mode. I […]
Building an Auxiliary Display
I wanted to be able to check my web server’s statistics periodically but did not want having to log on […]
Arduino Serial Using LT1780
Most of the recent Arduino and compatible boards use some kind of USB to UART hardware (e.g. FT232RL in Arduino […]
Alternative Crystal Frequency For Pinguino
After I built my first Pinguino, I decided to do some experiments on using crystals of different frequencies. By default, […]
First Pinguino Build
As I mentioned a few weeks ago, I was in the process of building tools necessary to bootstrap the hardware […]