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 […]
Building a USBPICProg PIC Programmer
I mentioned in one of my previous posts that I decided to give PIC family MCUs a spin after having […]
Troubleshooting USB Circuit
I have built some circuits that interface with computer USB ports. On several occasions, I had built the circuits but […]
A Dual Temperature Display With Humidity Measurement
I built a digital thermometer a couple of weeks ago. This thermometer uses an LM19 sensor calibrated for measuring a […]
An 8-Digit 7 Segment Display
I built a 4-digit 7 segment display last year. In that design, I used four 74HC595 shift registers to drive […]
My First PIC Project
I have been using AVR for quite a while but have never used any PIC micro-controllers from Microchip. It seems […]
AT&T DSL Usage Cap
Various reports suggest that AT&T DSL usage will soon be capped at 150GB per month starting May 2. And to […]
Browser Statistics
Having recently read an article on the current overall browser statistics, I decided to comb through my server log to […]
Server Upgraded
My site traffic has been increasing quite a bit recently and my old Pentium III server is certainly showing its […]
Wake On … IR
One of my old computers is used as a file backup server in my basement office. It is kept off […]
AD7705/AD7706 Library
AD7705 and AD7706 are two 16-bit Sigma Delta ADCs. Equipped with on-chip digital filters and programmable gain front ends, these […]
Interfacing DS7505
The DS7505 digital thermometer and thermostat is a very versatile temperature sensor. It offers 9 to 12-bit digital temperature readings […]
TCA9555 Library for Arduino
TCA9555 is a 16-bit I2C I/O expander from Texas Instruments. It allows the easy addition of 16 I/O ports on […]
Arbitrary Waveform Generation with Arduino
Arbitrary waveform generators come in handy when troubleshooting digital and analog circuits. Most commercial arbitrary waveform generators are very expensive […]