arduino-uno on soldernerd

Ultrasonic Anemometer Part 25: I2C Interfacing and more

Thu, 11 Aug 2016 00:00:00 +0000

It’s been a long six weeks since my last post but that doesn’t mean that I haven’t done anything since. Among other things, I wrote some code to get the I2C interface working and hooked the anemometer up to an Arduino Uno with an LCD display attached. Apart from demonstrating the I2C interface this also nice for testing. For the first time I can see what this thing is measuring in real time without hooking it up to a PC over USB.

Ultrasonic Anemometer Part 19: Testing the Analog Circuit

Tue, 26 Apr 2016 00:00:00 +0000

In my last post I went through the design of the analog part of the ultrasonic anemometer. Today we will see how the circuit designed last time performs in practice.

Arduino MPPT Solar Charger Shield – Software

Fri, 12 Feb 2016 00:00:00 +0000

There have been two previous posts on this project: one on the concept and the hardware and one on hardware testing. You probably want to check them out first if you’re not yet familiar with this project. Or even better: Click here for an overview over this project.

Arduino MPPT Solar Charger Shield - Testing

Wed, 03 Feb 2016 00:00:00 +0000

First tests are being performed on the Solar Charger Shield

In my last post I’ve introduced a proof-of-concept Arduino solar charger shield. I went through the hardware as well as the way it works - or at least is intended to work. It was prominently linked on dangerousprototypes.com as well as some other sites and got quite a bit of publicity as a result. Thank you all for sharing this post.

Arduino MPPT Solar Charger Shield

Thu, 21 Jan 2016 00:00:00 +0000

A friend has approached me regarding his solar project. He wants to install a solar panel together with a battery and an inverter in order to have power at his allotment garden. He had looked at a hobbyist project where an arduino was used to build a MPPT (maximum point of power tracking) charge controller. I took a look at the design, liked a lot of what I saw and decided to build something similar.

Arduino Ultrasonic Anemometer Part 13: Arduino library finally ready

Thu, 01 Jan 2015 00:00:00 +0000

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.

Arduino-based Inductance Meter

Sun, 14 Dec 2014 00:00:00 +0000

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

Wed, 03 Dec 2014 00:00:00 +0000

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

Sun, 30 Nov 2014 00:00:00 +0000

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

Thu, 27 Nov 2014 00:00:00 +0000

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.

Arduino Ultrasonic Anemometer Part 9: A new hardware

Mon, 24 Nov 2014 00:00:00 +0000

My first wind meter prototype is kind of working. The software will need improvement to make this wind meter into something really useful. But both hardware and software are basically functional and can be built up upon.

Arduino Ultrasonic Anemometer Part 8: More Software

Sat, 22 Nov 2014 00:00:00 +0000

In my last post I talked about how to get the Arduino to output bursts of 40kHz pulses. Today I’ll go through the rest of the software so by the end of this post we’ll have a very rudimentary but working sketch for our ultrasonic wind meter.

Arduino Ultrasonic Anemometer Part 7: Basic software

Thu, 20 Nov 2014 00:00:00 +0000

Today I’ll tell you how I got started with my software. If you’re new to my blog you might want to click here for an overview over my arduino-based wind meter project: /projects/arduino-ultrasonic-anemometer/

Arduino Ultrasonic Anemometer Part 6: Mechanical design

Tue, 18 Nov 2014 00:00:00 +0000

If you’ve read through my previous posts of this series you know that here is an Arduino and two home-made PCBs together with 4 transducers waiting to work together as an ultrasonic wind meter. If you haven’t you may click here for an overview of posts on my anemometer project: /projects/arduino-ultrasonic-anemometer//posts/arduino-ultrasonic-anemometer-part-6-mechanical-design/

Arduino Ultrasonic Anemometer Part 5: Testing the digital board

Mon, 17 Nov 2014 00:00:00 +0000

In the last post I went through the analog board and showed what I had to do to get it working properly. Today I’ll do the same whith the digital board. Click here for an overview over this series of posts on the anemometer project: /projects/arduino-ultrasonic-anemometer/

Arduino Ultrasonic Anemometer Part 4: Testing the analog board

Sun, 16 Nov 2014 00:00:00 +0000

In this post I will go through the testing of the analog circuit and what I had to do to make it work properly. Click here for an overview over this series of posts on the anemometer project: /projects/arduino-ultrasonic-anemometer/

Arduino Ultrasonic Anemometer Part 3: Analog Circuit

Sat, 15 Nov 2014 00:00:00 +0000

Today I’ll go through the details of the analog cirquit. Click here for an overview over this series of posts on the anemometer project: /projects/arduino-ultrasonic-anemometer/

The analog board ready to be connected

This is what I would consider the heart of this wind meter. This is where the received signal is amplified and processed so the overall accuracy and reliability of the entire project really depends on it. The functionality of this board can be summarized as follows:

Arduino Ultrasonic Anemometer Part 1: Getting started

Thu, 13 Nov 2014 00:00:00 +0000

This is the first of a series of posts to follow. I will describe my attempts to build an ultrasonic wind meter (anemometer) based on an Arduino Uno. By the time of writing, I have a working prototype but it will take me a while to catch up in this blog. So this is just the first post - more will follow soon.