Arduino: Independent On-Off Times with Millis()
When using delay() to flash a LED there is a time for the LED to be on and then off. This makes it easy to have independent control of the “on” and “off” times. The standard blink …
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Arduino Millis() Examples
You’ve recently learned about millis() and can’t way to delete all of your references to delay(). The problem is that you don’t know quite how to convert your code into …
Read MoreA week of Arduino Millis()
By far one of the most powerful functions of the Arduino library is the millis() counter. It is also one of the most misunderstood functions. Mastering millis() can unlock …
Read MoreEAGLE: Clean up the parts list by disabling libraries
Does it take a few seconds every time you click the “ADD PART” button on EAGLE? Tired of scrolling through an enormous list of parts just to find a capacitor? Here’s how you can …
Read MoreThe sounds of dialup on a Spectrogram
This beautiful Spectrogram video is instant nostalgia for any of us who used BBSes back in the 80s and 90s. The video comes from Scott H on Youtube. Several of the videos I have …
Read MoreThe hidden Arduino Macro F() fixes random lock ups
It’s 3am but you are not going to bed until you squash this last bug. You sprinkle Serial.print() statements everywhere you can think of, and then that’s when all hell breaks …
Read MoreThree Alternatives to Arduino's Serial Monitor
The Arduino IDE includes a “Serial Monitor” which is decent for basic serial communication. However, when you need real time serial interaction or data logging capabilities, that’s …
Read MoreEAGLE: Using the Add Part's Search
If you are anything like me, your copy of EAGLE has an extensive list of libraries. Most of them probably came with the installer, some which you have added. This, of course, leads …
Read MoreUsing Adobe Illustrator to Create A Sine Wave
When working on the AddOhms video on the difference between AC and DC, I needed a vector diagram with a sine wave. Using Adobe Illustrator, I tried with a Bézier tool, but it …
Read MoreConst 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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