The Case For Using Parallel Programmer
This is what I ran into for the first time: I was flashing the chip the other day and after many successful runs I encountered the following infamous avrdude error:
Author: kwong
Invoking DS89C430/450 ROM Loader Using Arduino
DS89C430 and DS89C450 are two ultra-high-speed 8051-compatible microcontrollers from Maxim Integrated Products. One unique feature of DS89C430/450 microcontroller is that it has a ROM loader mode which can be used to program the microcontroller itself.
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. My ultimate goal was to eventually create a full fledged control platform based on this RTC module (more on this…
Arduino Development Using NetBeans
The Arduino development environment is probably the preferred development platform for the majority of Arduino users. It is lean and relatively easy to use. Quite a few examples are at your finger tip and even for people without much programming…
Working With LM19 Temperature Sensor
LM19 is an analog temperature sensor that operates over a while temperature range (-55 to 130 Celsius). It is very easy to interface it with a microcontroller due to is fairly linear voltage output.
A Library for LTC1665/LTC1660
ATmega328p does not provide any Digital/Analog conversion channels (although the D/A conversion can be simulated by means of measuring the PWM output). We can easily add up to eight D/A channels using either a LTC1665 (8 bit) or LTC1660 (10…
An Arduino ICSP Board
I have been using the bit-banging method to boot-load ATmega328p with Arduino bootloader for a while, and Kimo’s method worked quite well for me. If you need to flash a lot of chips however, you might not want to swap…
Interfacing LIS3LV02DL Using SPI — II
In my last post, I described in detail how to hand solder LIS3LV02DL, an LGA packaged accelerometer chip. And here I will show you how the communication with Arduino is done using SPI.
Interfacing LIS3LV02DL Using SPI — I
LIS3LV02DL is a MEMS three-axis digital linear accelerometer that provides both I2C and SPI interfaces for communicating with microprocessors. My work here is largely based on the work done at Near Future Laboratory. Instead of using a commercially available LIS3LV02DQ…
4 Digit 7 Segment Display Using Arduino
I was inspired by Paul’s 7 segment display and decided to build one myself. He used 4 common cathode 7 segment displays. In his original schematics, all the segments within a display shared one current limiting resistor which unfortunately affect…
On ATMega328 Bootloading With FTDI Bitbang Method
I have been using the FTDI bitbang method piloted by Kimio Kosaka and improved by others (1,2,3) to flash Arduino bootloader onto blank ATMega328p for a while and thought I would share my experience with everyone.
A Simple Dual H-Bridge
H-bridge is frequently used to control DC motors and stepper motors. When controlling a bipolar stepper motor, two full H-bridges are needed. There are many H-bridge ICs (like L298, MPC17529 and SN754410 which is a quad half H-bridge) for just…
A Power Inverter with Arduino Pulse Source
After going through some of the tutorials on Arduino’s site, I really started to appreciate what a powerful platform Arduino really is. A lot of seemingly complex software/hardware interactions can be made quite easy with relatively few components and little…
Hello Arduino
When I first started interfacing electronics with computers back in the early 90’s my hardware choice was an ISA AD/DA card. So when I wanted to experiment with some physical computing stuff recently, I thought of getting an AD/DA card…