Archive for category: Arduino

New (more accurate) clock module…

May 22, 2015 | Arduino, Development Boards, My Projects | By: Mark VandeWettering

As I mentioned in a previous post, I was not enormously satisfied with the accuracy of the DS1307 clock module that I got from China. It was hard to argue with the less than three dollar price tag, but I was hoping that the accuracy might achieve 20ppm (less than two seconds of drift per […]

Accuracy of the DS1307

May 21, 2015 | Arduino, My Projects | By: Mark VandeWettering

My tinkering with using the Adafruit GPS as a time base has yielded some results. I’m still getting a few spurious interrupts when I feed my buffered PPS signal into the interrupt pin on the Arduino, but they are relatively few and far between (and quite regular in appearance). A few short notes, followed by […]

Weekend Update: Maker Faire, new gadgets, and I ground myself…

May 17, 2015 | Arduino, electronics, ESP8266, WSPR | By: Mark VandeWettering

Greetings readers. I’m hopefully wishing there is still more than one. This weekend was the Bay Area Maker Faire 2015, the 10th incarnation of an event which has become increasingly (even frighteningly) popular. I’m tempted to channel Yogi Berra, who said “Nobody goes there. It’s way too crowded.” Anyway, I got out of my house […]

Time from the ESP8266…

May 14, 2015 | Amateur Radio, Arduino, ESP8266, WSPR | By: Mark VandeWettering

Yesterday, I mentioned the idea of using the cheap ESP8266 as a clock source for a WSPR beacon transmitter. My initial idea was to basically write code for the Arduino that connected to a remote NTP server, formulate UDP packages… sounds like a pain. But then I found that there was alternative software I could […]

An Arduino by any other name…

April 27, 2015 | Arduino | By: Mark VandeWettering

I was trying to make some headway on my robotic platform project, so I went digging through boxes in my office to find the large, 12v SLA battery that I know I have somewhere. While searching I found a bunch of stuff: hundreds of red LEDs in a pack, two Arduinos, a Sparkfun breakoutboard for […]

Using a SainSmart LCD panel with the Arduino 1.6.3 IDE…

April 22, 2015 | Arduino, My Projects | By: Mark VandeWettering

Yesterday I experienced some frustration with the SainSmart I2C LCD Module that I bought to help Pete and Bill uncover the problems that they’ve been having. If you go and read, you’ll find that I had a lot of difficulty finding the right combination of code that can be used with this module. Eventually, I […]

A (not entirely simple) LCD display for the Arduino…

April 21, 2015 | Amateur Radio, Arduino, My Projects | By: Mark VandeWettering

I am a big fan of Bill Meara N2CQR and Pete Juliano N6QW, hosts of the really great Soldersmoke Podcast. Together, they chat about homebrewing ham radio equipment, and what they’ve learned in their lessons along the way. Their “tribal knowledge” is of terrific help to someone like me who keeps making small forays into […]

New I2C peripheral: 6 DOF IMU, $5.89

April 20, 2015 | Arduino, My Projects | By: Mark VandeWettering

This little gadget arrived via Amazon Prime today: a three axis gyroscope/accelerometer that can be programmed via the I2C bus. I didn’t really have any reason to get one, other than simple curiosity, although I suspect that possibly mounting one on my (as yet unfinished) robot platform might be able to determine motion parameters of […]

Tinkering with individually addressable LEDs…

April 19, 2015 | Arduino, LED, Microcontrollers, My Projects | By: Mark VandeWettering

While digging around looking for an LCD module I thought I had stashed somewhere, I encountered a bag with some of 8mm individually addressable RGB LEDs that I had never done anything with. For fun, I thought I’d wire a few of them up on my breadboard and see if I could get them to […]

More ESP8266 Experimentation: Giving it the Boot…

April 4, 2015 | Arduino, Hacking, LED, My Projects | By: Mark VandeWettering

Got a chance to play around a bit more with the ESP8266 tonight. I dug out a nice little dual output power supply board that I had got from tautic.com with the hope that it would eliminate some of the erratic behavior that I had observed before. Sadly, that didn’t seem to solve my problem. […]

Not all is easy-peasy with the ESP8266, with a short addendum

April 3, 2015 | Arduino, Development Boards, Embedded | By: Mark VandeWettering

Okay, after I did my quick video record yesterday re: the ESP8266, I continued to play with it a bit more. And, it must be said, I had a little bit of difficulty which I thought I would write up so that other people who are experiencing the same issues might be able to comment, […]

First electrons for the ESP8266…

April 2, 2015 | Arduino, Development Boards, Embedded, Internet of Things, My Projects | By: Mark VandeWettering

In the telescope making world, we call the first time that a telescope is used to look at the sky “first light”. I’ve decided to call the first time I load some code onto a new development board “first electrons”. A few weeks ago, when I did a video that illustrated some of the bucket […]

More on Arduino v. Arduino…

April 2, 2015 | Arduino | By: Mark VandeWettering

Make just published this interview with Arduino founder Massimo Banzi about the internal schism that’s currently embroiling the Arduino community. It is true that this represents only one side of the story, but it does seem that at a minimum, Arduino SRL (represented at http://arduino.org) has copied much of the Arduino LLC website without credit […]

Arduino? Perhaps we need OurDuino…

March 31, 2015 | Arduino | By: Mark VandeWettering

It’s no secret that I’ve been a fan of the Arduino. More than any other board, it’s got me into hacking little bits of hardware and programming in the small, and has been part of numerous projects that I’ve tinkered together, and others that I’ve helped mentor young people with. It’s a cute platform for […]

Minor tweaks to Arduino Morse Sketch…

March 30, 2015 | Amateur Radio, Arduino, My Projects | By: Mark VandeWettering

Commenter Andy wanted a version of my classic code that could generate a tone instead of just blinking an LED. I mentioned that I had done this before, but frankly couldn’t find the source code, so I modified my existing program to implement the simplest possible tone: a simple square wave. Rather than using a […]