kwong – Page 26 – Kerry D. Wong

A Clock/Stop Watch Based on BQ3287

Over the past couple of weeks, I have been experimenting with BQ3287, a real time clock module from Taxes Instruments. […]

The Google PAC-MAN logo is actually a live game!

The Arduino development environment is probably the preferred development platform for the majority of Arduino users. It is lean and […]

LM19 is an analog temperature sensor that operates over a while temperature range (-55 to 130 Celsius). It is very […]

ATmega328p does not provide any Digital/Analog conversion channels (although the D/A conversion can be simulated by means of measuring the […]

I have been using the bit-banging method to boot-load ATmega328p with Arduino bootloader for a while, and Kimo’s method worked […]

In my last post, I described in detail how to hand solder LIS3LV02DL, an LGA packaged accelerometer chip. And here […]

LIS3LV02DL is a MEMS three-axis digital linear accelerometer that provides both I2C and SPI interfaces for communicating with microprocessors. My […]

I was inspired by Paul’s 7 segment display and decided to build one myself. He used 4 common cathode 7 […]

I have been using the FTDI bitbang method piloted by Kimio Kosaka and improved by others (1,2,3) to flash Arduino […]

H-bridge is frequently used to control DC motors and stepper motors. When controlling a bipolar stepper motor, two full H-bridges […]

After going through some of the tutorials on Arduino’s site, I really started to appreciate what a powerful platform Arduino […]

When I first started interfacing electronics with computers back in the early 90’s my hardware choice was an ISA AD/DA […]

Using PC’s parallel port is a convenient way to control a stepper motor. For unipolar stepper motors, up to two […]

Using DTR (data terminal ready) and RTS (request to send) pins of a PC serial port (RS-232) without actually using […]