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µBOT v3 – An experiment in making a small robot (part 1)

Shane Ormonde3 years ago8 months ago15 mins

This idea of making a small robot has been knocking around my head for the past few years. Here is the original design (v1) from a few years ago: I made a mistake when programming the “fuses” on the AVR chip which meant it was effectively bricked. For some reason I never came back to…

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Spooky Alexa mask documentation

Shane Ormonde3 years ago8 months ago38 mins

This is the animatronic mask made by Keith Colton for the 2019 Dublin Maker Faire. This post will document the assembly and the current electronics being used. All images can be clicked on to view the full resolution image. Mechanical Assembly: In this photo you can see the animatronic mechanism. There are three servos in…

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  • OpenWave

OpenWave #9 : Measuring significant wave height in the frequency domain

Shane Ormonde4 years ago4 years ago63 mins

  The last post looked at two time domain measurements of significant wave height, the highest 3rd calculation and the 4 times the standard deviation measurement. It turns out that the standard deviation measurement can also be made in the frequency domain. This is because the variance of a time domain signal is equal to…

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  • OpenWave

OpenWave #8: Calculating significant wave height

Shane Ormonde4 years ago4 years ago06 mins

There are multiple ways of calculating significant wave height (Hs). According to wikipedia, the original definition was the average of the highest 3rd of waves. What this means is you would measure wave heights(trough to crest) for a set period, order that dataset from lowest to highest, take the top 3rd of the values and…

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  1. wattnotions on Messing about with trilaterationSeptember 27, 2023

    Not unnecessarily complicated enough :D

  2. Mikhail Grushinskiy on Messing about with trilaterationSeptember 26, 2023

    Why don’t you just use GPS with 2 cm accuracy which is achievable with RTKLib?

  3. Maria on Low power magnetic hold and release mechanismAugust 25, 2023

    From where i can read out more about it. Do you have any suggestive readings?

  4. Mikhail Grushinskiy on OpenWave – take 2May 28, 2023

    You would also need fast Fourier transform to find out waves frequently to use it as reference point to give…

  5. Mikhail Grushinskiy on OpenWave – take 2May 28, 2023

    You would need wind sensor real-time data. You would need to tilt compensate wind data from real time IMU data.…

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