I recently needed to do some work with Pin Change Interrupts and it was a bit of a learning experience for me. As it turns out, they’re actually pretty easy. I’m posting this so that when I need to look it up in the future, I can easily find it and maybe I can help somebody else out too. Continue reading “Arduino Pin Change Interrupts”
Author: mwwalk
AVR (& Arduino) Default ISR – Resetting Pin Change Interrupt Problem
I just got done wasting 10 very frustrating hours on a Interrupt Service Routine problem. In this case it was a pin change interrupt that causes the chip/board to reset. It turned out to be a simple capitalization error but luckily I also discovered some info about the AVR default ISR. I wanted to post it here in case somebody accidentally found it useful. Continue reading “AVR (& Arduino) Default ISR – Resetting Pin Change Interrupt Problem”
Photo Friday – Tulum Temple
Mayan Temple in Tulum Mexico – Jan 2013
This is the only Mayan ruin that is on the ocean.
Nokia 5110 Screen – Photo to Bitmap Converter
The Nokia 5110 LCD screen is a nice little LCD sold by both Sparkfun and Adafruit. I needed to work with one for my wireless weather station and wanted to use my logo instead of the Adafruit logo which comes in their library. So I wrote a processing program to make creating images easier.
Continue reading “Nokia 5110 Screen – Photo to Bitmap Converter”
Photo Friday – Oxford Bike
And we’re back for another Photo Friday. Sorry there hasn’t be much activity on the blog lately. I’ve been busy with trying to graduate by August and proposing! But here’s the photo.
Photo Edits: Before and After 2
In this installment of Photo Edits: Before and After, we’re looking at a another photo taken on the beach in San Pedro, Belize to see how careful edits can dramatically change the image.
Photo Friday – Panama Skyline
Panama City Skyline – Jan 2014
Photo merged from six individual photos.
Photo Edits: Before & After
This is the first of a new (hopefully) weekly series where I’m going to highlight a photo that I’ve retouched and show the before and after versions. Any comments or opinions would be appreciated.
Photo Friday – Melbourne Graffiti
Street Art (Graffiti) in Melbourne, Australia
Burn bootload to Arduino Mego without ISCP pins
This tutorial is pretty simple but it is worth a mention in case others with less experience get into a similar jam. I was having trouble uploading some programs to my Arduino Mega so I decided to burn the bootloader again to see if that fixed the problem. Unfortunately, I had chopped the ICSP headers off about a year ago when I didn’t really understand what they were used for and didn’t want them touching a shield I was putting on top. Fortunately, there is a way around this.
Continue reading “Burn bootload to Arduino Mego without ISCP pins”
The Wandering Engineer 