Kerry D. Wong – Page 25

Wide-band RF Field Strength Meter

Field strength meter is extremely useful when working with RF devices. It can be used to quickly diagnose whether a […]

Among the many commercial ISM band RF transmitter and receiver ICs, I have found that Silicon Labs‘ Si4021 (transmitter IC) […]

I have been thinking about building an LC meter for a while since I do not have a multimeter that […]

I used to own an all-transistor, single channel 10 MHz analog oscilloscope. While it was not adequate by nowadays standard, […]

In my last blog post, I showed you the schematic of a I2C data logger I built. Here I will […]

There is a popular data logger shield out there designed for Arduino using a DS1307 real time clock chip. And […]

The official Arduino Duemilanove board is an excellent tool for prototyping. For most of the users, it is a very […]

One of the goals in my previous timer project was to achieve the ability to control multiple electronic devices using […]

To measure how flat a surface is, you typically will need a level of some sort. In this article, I […]

One of my recent projects was to build a POV display device. There are already many microcontroller based POV devices […]

Whenever I setup a new web server, I always like the idea of keeping the Apache logs roated on a […]

Well, there is an old saying:“There’s no such thing as a free lunch.” After yesterday’s server upgrade, everything worked pretty […]

I have finally got around to upgrade my web server. The server I have been using was an old Pentium […]

Standard Arduino boards use FTDI’s FT232RL to interface with computer’s USB port. Since FT232R is just a USB to UART […]

When I was doing the clock/stop watch project last month, I mentioned that I intended to add I2C (TWI) communication […]