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2015

Inductance Meter PCB goes to India

In a recent post I’ve offered a free PCB on a first-come first-served basis. I’ll be happy to mail the board together with some components to Mumbai, India tomorrow. It goes to Parth Sane, a student, homebrewer and soon-to-be ham radio operator.

Arduino Ultrasonic Anemometer Part 14: Wind Tunnel Testing

It’s been a while since I posted the last update on the anemometer project. The reason for this is that I’m struggling with the aerodynamical design. By the way: Click here for an overview over the ultrasonic anemometer project: /projects/arduino-ultrasonic-anemometer/

Free Inductance Meter PCB - first come, first served

When I made the PCB for the stand-alone inductance meter, I erroneously used a SSOP footprint for the microcontroller (instead of the desired SOIC). The PIC is available in a SSOP package (PIC16F1963-I/SS instead of PIC16F1936-I/SO) but I didn’t have any at hand so I simply made a new board with a SOIC footprint.

Stand-alone Incuctance Meter Finished

If you’ve read my last post you’re already familiar with my Inductance Meter project: /posts/stand-alone-inductance-meter/. At that time the hardware was ready but there was no software yet. That’s been corrected, the inductance meter is now fully functional.

Stand-alone Inductance Meter

Some of you may have seen my arduino-based inductance meter in this post: /posts/arduino-based-inductance-meter/. The guys at dangerousprototypes.com picked it up (http://dangerousprototypes.com/2014/12/16/arduino-based-inductance-meter/) and this blog got more visitors than I could ever have imagined. Thanks, dangerousprototypes.

Arduino Ultrasonic Anemometer Part 13: Arduino library finally ready

It’s been a while since the last post of this series. As so often, the task turned out to be more demanding than I first thought. And then I was also entirely new to assembly language, got distracted by my Inductance Meter Project (/posts/arduino-based-inductance-meter/) and went on a skiing holiday. But finally, the promised library is ready.

2014

Arduino-based Inductance Meter

Incuctance meter in action. It displays the resonance frequency together with the inductance I’ve just finished a little Arduino project. It’s a shield for the Arduino Uno that lets you measure inductance. This is a functionality that I found missing in just about any digital multi meter. Yes, there are specialized LCR meters that let you measure inductance but they typically won’t measure voltages or currents. So I had to build my inductance meter myself.

Arduino Ultrasonic Anemometer Part 12: Working on an Arduino library

This is just a very brief update on what I’ve been working on the last few days. By now, this blog has caught up with where the project currently stands so the blog posts won’t be quite as frequent as they used to be. When I just started this series I had already worked on this my wind meter project for two months so I had plenty of material I only had to post.

Arduino Ultrasonic Anemometer Part 11: Testing the new hardware

Today I’ll go through each part of my new Arduino shield to see if it performs as expected. If you’re new to my Arduino-based ultrasonic wind meter project, you might want to click here for an overview: /projects/arduino-ultrasonic-anemometer/

Arduino Ultrasonic Anemometer Part 10: Arduino Shield Ready

A world’s first: Ultrasonic Anemometer Shield for Arduino Uno I’m happy to announce that my new Arduino wind meter shield is ready. I had posted the design as well as a photo or two of the naked board in my last post but now I’ve placed and soldered all the numerous components and it’s ready to go.