After my (somewhat failed) Charlieplexing experiment, I ordered a 3-8 line decoder (demultiplexer) to attempt an 8 bit LED counter in a much easier way. At some point I am wanting to created an LED matrix board, and this will require at least 32 LEDs. Unfortunately, the demultiplexer I ordered is an inverting demultiplexer. This… Continue reading Demultiplexer with Arduino
Category: Arduino
Charlieplexing
For fun, I was going to create an 8 bit binary counter with my Arduino Uno. An obvious, simple way to do something like this would be 1-1 wires all grounded to the Arduino. That’s all fine and nice, but pretty soon you have a mess of wires. Also, its not a very challenging way… Continue reading Charlieplexing
Arduino/IR
Using an IR receiver diode and Arduino Nano I made a very simple program to read inputs from an old Toshiba DVD remote (which I decoded using the same receiver). Both the receiver and the remote operate on a 38kHz carrier frequency. This is important. Its very basic–If I see code 0xA25D807F, I turn on… Continue reading Arduino/IR
Soldering
Back in the day I worked at Raytheon. Most of the people I worked with were electrical engineers with many years of experience–And many of them took great pride in their ability to solder. There were a few debates over who was better at the craft. Until very recently, short of making blobs of solder… Continue reading Soldering
Shrinkify Arduino
Definitely something I’m going to try…
Down On The Corner – Arduino
#include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x3F,16,2); // LEDs const int pin1 = 13; const int pin2 = 12; const int pin3 = 11; const int pin4 = 10; const int pin5 = 9; const int soundSensor = A0; // the piezo is connected to analog pin 0 int sensorReading = 0; void setup()… Continue reading Down On The Corner – Arduino
First Arduino Project – Distance Control Shutter Release
I picked up an Arduino last weekend after my friend Eric introduced me to it (this is the same friend who got me hooked on Mac). I couldn’t wait to order it on Amazon, and just decided to spend a little more on it at Radio Shack to have it in hand. Exactly one week… Continue reading First Arduino Project – Distance Control Shutter Release