Modified Sine Wave Generation With AVR
Modified sine wave is essentially just a pulse width modified square wave. It is a very useful waveform for power […]
Simple External Powered USB Port
I recently bought a TrendNet TK-207K KVM switch. After hooking up my mouse and keyboard, I was suprised to find […]
4KHz-170MHz Wide Band RF Signal Generator – II
Continue with my previous article, let me first explain the code a little bit.
4KHz-170MHz Wide Band RF Signal Generator – I
A signal generator can come in handy when working with digital and analog circuits. While most commercial grade signal generators […]
Brother MFC-7340 Setup Under Linux
I just bought a Brother MFC-7340 multifunction laser printer to replace my old Lexmark Optra E310 which I have had […]
Temperature/Humidity Data Logger — Trial Run
I built a rather generic I2C data logger a few weeks back. As I mentioned in my earlier posts, it […]
Hex/Bin/Dec Converter And Calculator
When working with micro-controller projects, it is often necessary to perform calculations in binary and hexadecimal forms. While almost all […]
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 […]
RF Data Link Using Si4021 And Si4311
Among the many commercial ISM band RF transmitter and receiver ICs, I have found that Silicon Labs‘ Si4021 (transmitter IC) […]
AVR LC Meter With Frequency Measurement
I have been thinking about building an LC meter for a while since I do not have a multimeter that […]
My New DS1052E Oscilloscope
I used to own an all-transistor, single channel 10 MHz analog oscilloscope. While it was not adequate by nowadays standard, […]
I2C Data Logger Using ATmega328p and DS3232 – II
In my last blog post, I showed you the schematic of a I2C data logger I built. Here I will […]
I2C Data Logger Using ATmega328p and DS3232 – I
There is a popular data logger shield out there designed for Arduino using a DS1307 real time clock chip. And […]
ZIF Arduino Prototyping Board
The official Arduino Duemilanove board is an excellent tool for prototyping. For most of the users, it is a very […]
A High Current TRIAC Controller Using Arduino
One of the goals in my previous timer project was to achieve the ability to control multiple electronic devices using […]