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Golf, measured.
Ideas, tested.

Notes and experiments on clubfitting, putting, launch monitors and the technology behind the game.


26 April 2021

Did not sell my MII

Forgot to tell the end of this story: Did not sell it. Got a buyer for it and promised to include training. However thought about it for some time and decided it did not feel good. Luckily the buyer understood …

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10 August 2016

TrackMan MII for sale.

I'm selling my Trackman MII, it's posted on ebay.fr…

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18 August 2015

PutPi - Working!

Calibration Received the new IR Leds, $0,75 each (:smile:) so it was time to get started with the calibration rig. However I did not really like the design so I created a new one: I'm still not 100% happy with …

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25 February 2015

3D Printing in Clubfitting!

Exactly a year ago I wrote this on the TOM WISHON FORUM in a thread about 3D printing ( TW Forum thread ) ^The only thing I know is that this technology is moving very fast indeed. I believe that only one year …

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24 January 2015

Banned from the TOM WISHON Forum!

I tried to login yesterday on the TOM WISHON forum and this message welcomed me That was a unpleasant surprise! However it seems that I stepped on to many toes when replying to some of the nonsense that was pos…

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08 October 2014

PutPi : Update

Fail! After testing the PutPi software more then once, re-doing all calculations by hand and using other software club-path, swing direction and all other direction related data seemed incorrect. Not all the ti…

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05 June 2014

PutPi : Camera Calibration

Objective As mentioned in the "PutPi : The Camera" blog entry it's possible (even very likely) that the lens will cause a distortion of the image. As the goal is to measure the exact position of the TOMI clip (…

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02 June 2014

PutPi : The 3D printed camera housing

Design The "new" camera needed a new housing. After designing, testing, adjusting, printing and re-designing, testing etc I ended up with a nice pile of junk (:mrgreen:) However the final design was rather nice…

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31 May 2014

PutPi : The camera II

Focusing the new lens: After mounting the new m12 lens holder on the board and screwing the new IR lens into the lens mount all that is left to do is to get the lens to focus. Be careful when turning the lens i…

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20 May 2014

PutPi : The camera.

The Hardware: The cheap camera to use and improve the putting fitting data is the Playstation Eye ( PlayStation Eye ). This small camera has some great specifications. Not only is the used image sensor sensitiv…

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28 February 2014

Fun with PutPi

Yes, the first screenshot of the new software is available (:biggrin:) I used a small pendulum with the TOMI clip connected. As you can see most data looks rather good. Swing plane and Swing direction still nee…

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12 January 2014

Fun with TOMI : Part II

While working on this second posting, double checking my data and comparing it against the TOMI data I found again one more problem (and solution) The TOMI assumes that the sweetspot is in the middle of the fac…

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12 January 2014

Fun with TOMI : Part I Adendum

A owner of a TOMI system requested a responds from Pure Motion, the makers of the TOMI. This is what he received: The author makes a critical error in” assuming” (his word) that the TOMI measures the starting p…

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06 January 2014

Fun with TOMI : Part I

I believe that it's important for a clubfitter to understand his tools. This posting is about the TOMI, how it works, what the data it produces really means and how that data can be improved. There is a lot to …

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20 July 2013

Fun with a frequency analyzer : Part III

Dave Honke suggested to measure the shaft again after its FLO was found. CPM @ FLO : 391.07 ± 1.33 CPM @ FLOW +90° : 389,61 ± 0.65 CPM @ FLOW +180° : 390,92 ± 0.80 CPM @ FLOW +270° : 390,11 ± 0.99 As you can se…

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03 July 2013

Fun with a frequency analyzer : Part II

In order to understand why that standard deviation was so large when using the raw data we must understand how the frequency is measure\calculated. Frequency is the number of periods per unit time (per second) …

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02 July 2013

Fun with a frequency analyzer : Part I

Since I started clubfitting I use an Auditor Frequency Analyzer. This model uses strain gauges to measure the frequency and is capable to show the cpm up to 1000 cpm on it's LCD display. However this model also…

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06 May 2013

The clubfitter community : Does it exist?

Some years ago (feb-2010) I posted the results of my undertaking in understanding the Zelocity PureLaunch. In that paper I included the link to the test software allowing any owner of this LM to see if he could…

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