FPGA : RC Servo and Stepper motor control in Verilog


It’s been a while since my last post … 8 months more exactly, which is probably one of the biggest gap in recent years… Having 2 kids is taking its toll on my hobby ! :)

A couple of months ago I did a tricky soldering job for a friend, to fix the wire / jack of his hi-fi ear phones, and I almost made a post about it… and then I realised, “hold on, is this how lame I have become, blogging about something as trivial as tricky tiny wire soldering ?”.

So here is something slightly more interesting, that I managed to work on this past week-end: my first foray into FPGAs !

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Self balancing robot


It’s really been a very long time since I added this on my todo list, and in the past couple of week-ends I finally found the time to do it.

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CNC drawing


 

I’ve been wanting to get into the CNC world for a while now, and I keep thinking about buying my own little CNC mill.
However, I live in a flat, so the dust and noise is what stops me from going ahead… Maybe also the fact that I have an under-used 3D printer :)

In any case, I’ve been thinking recently that a nice way to get into this space would be a 2D CNC drawing robot, as it solves the dust (and most of the noise) issue.

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ServoTester


Here is a really small side project that I developed while working on something else…

I had to test a RC speed controller that I wanted to use to control an electric car window motor, and for the 100th time I was facing the same dilemma: find 8 batteries for my remote control, dismount the RX part from the quadcopter and use that, OR grab the Arduino and write quickly some code to generate the corresponding signals ? Neither of which was actually particularly handy…

So I finally decided to build a small stand alone servo tester :

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Repair toy with 3D printed parts


A month or so ago my son received a very basic remote controlled car. Being 18 months old, he unsurprisingly managed to more or less break it in a couple of weeks…

CarAndRemote

The car and its remote

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Stepper motor bluetooth serial driver


First Test using an Arduino (clone) board

First Test using an Arduino (clone) board

Above is the image of my very first attempt of driving this nice little bi-polar stepper motor (M35SP-11HPK) that I had salvaged from a broken Canon printer a while ago.

I have quickly put together a L293D H-bridge with an Arduino board and using the Stepper library was quite straight forward

For the impatient you can see a (probably boring) video right after the break…

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Improve Wireless Doorbell


This is an unexpected project, that might prove one of my (very) few that are actually finished and useful ! :)

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Physical Face Following with OpenCV on Android


Here I am again, less than 2 days after my latest post… this must be the shortest delay ever between 2 consecutive posts.

 

First of all I hope you guys will approve of my choice of face to follow ! :)   The English title is “All about my mother” by Almodóvar, which I’ve never actually seen, but my wife tells me it’s a really good movie… !

 

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TM1638 Display Driver for Stellaris Launchpad


Here I am, roughly 3 months after my last post…

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3D Printer – Ultimaker


Hello everybody !

It’s been a while since my last post, 4 months more exactly. If we consider that the last couple of posts weren’t that “involved”, it’s been more than 6months, since January, when I did my last serious project / blogg post …

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