Const vs #define - When do you use them and why?
Arduino boards have microcontrollers with notoriously small amounts of RAM. The Uno only has 2,048 bytes of static RAM available for your program to store variables. So when you …
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Learn how to use a Mixed Signal Oscilloscope
When I teach the Electronics Measurements class at the TechShop in Austin, I take a lot of pride in showing off the Mixed-Signal Oscilloscope. We have a Rigol DS1102D as well as a …
Read MoreOuch. The Arduino GSM shield has a pretty serious design flaw, with its capacitors.
Tantalum is a really misunderstood capacitor. Well, all capacitors are misunderstood, but that’s a subject for another post. I ran across this post on the Arduino forums on the …
Read MoreMSO Demo Board
Last Update: 09/24/2013 Status: Done Github: https://github.com/baldengineer/Mixed-Signal-Oscilloscope-Demo-Board Abstract As a member of the TechShop in Austin, TX I teach a class …
Read MoreSawtooth waveform with the Arduino Due's Built-In DAC
Users of the ATmega328 based Arduino boards will recognize that the analogWrite() function doesn’t actually do anything analog. It just sets the duty cycle of a pulse width …
Read MoreFirst impressions of the Arduino Due
I’ve been working with Arduino boards for a number of years, as shown by the dates on some of my older blog posts. In that time I’ve only used boards based on the ATmega8 (like the …
Read MoreHow to Fix: Arduino is damaged and can't be opened
Open source software that isn’t signed by an identified developer can cause headaches upgrading it on OSX. While working with the Arduino Due the first time, I downloaded 1.5 Beta …
Read MoreLED Matrix Arduino Shield
Status: Completed GitHub: https://github.com/baldengineer/8x6-LED-Matrix-Shield Abstract After getting a couple of flashing lights working on a microprocessor, the next fun project …
Read MoreArduino: Getting Real Time Help
Note: The IRC Channel (along with all of Freenode) got nuked. While the Arduino Project Team provides their official Arduino forums, sometimes real-time help is just a bit better. …
Read MoreArduino: Sending and Receiving Multi-Digit Integers
When Serial data is transmitted to an Arduino, it is sent one byte at a time. Even though you might type “123” in the Serial Monitor, that’s not quite what is sent. Instead the …
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