Archive for category: Teensy

More on my 8 digit clock, now with GPS synchronization…

June 5, 2015 | Arduino, Teensy | By: Mark VandeWettering

Yesterday I just had a few minutes to hack around, and I decided to marry a sketch that used the TinyGPS++ library to the clock display that I had working the other day. I’ve been hopping back and forth between the Arduino and the Teensy LC as a development platform. Since I still had the […]

How much time is spent refreshing my 8 digit LED display?

June 2, 2015 | Arduino, Teensy | By: Mark VandeWettering

A couple of days ago, I wrote about experimenting with a little Chinese 8 digit, 7 segment LED module that is driven by some 74HC595 shift registers. My initial experiment in driving it with the Teensy was successful: I got a nice, steady display with a simple interrupt driven scheme which displays each digit for […]

Driving an 8 digit, 7 segment display based upon the 74HC595…

June 1, 2015 | Arduino, My Projects, Teensy | By: Mark VandeWettering

A few weeks ago, I was scanning the Deal Extreme website, and ordered a few different LED displays, not because of any pressing need, but because I wanted to have some display options available if I needed some for a project. I was especially interested in cheap LED displays. One of the ones I ordered […]

Some reliability problems with my DS3231…

May 31, 2015 | Amateur Radio, Arduino, Teensy | By: Mark VandeWettering

I was working on some additional software to power my nascent WSPR project. I’ve been thinking that rather than using an Arduino, it would be better to use the Teensy, so I’ve been experimenting a lot with the Teensy LC. My idea was to wire up my Ultimate GPS and an I2C based DS3231, and […]

Teensy LC hooked to an Adafruit Ultimate GPS…

May 26, 2015 | Amateur Radio, Arduino, My Projects, Teensy, WSPR | By: Mark VandeWettering

One of the things that I really like about the Teensy LC (besides its low price) is that it has three hardware serial ports. Hardware serial ports are just nicer than the SoftwareSerial ports that you see on the ordinary Arduino platform. While the latest support for SoftwareSerial ports on digital pins work reasonably well […]