By request for an irrigation system based on “Ebb and Flood irrigation technique” I made a system that should be able to handle a very large area and variation in complexity as well as irrigation types. The system is modular and is based on a main unit and multiple modules that are used for sensors and system control. My idea was to make the system stand alone so there should be no need for a computer running the garden/greenhouse, but I still wanted a good and easy way to configure and log the system. So with that in mind I built a system that is stand alone, but configured with a PC program trough radio/USB.
This is what I came up with:
While I worked on my own segway I got a request from my University (KTH) to create a vehicle that the students should be able to test their control system theories on. So I created an improved version based on my own segway.
I made a system for signal data acquisition that had to be modular and also work standalone without a connected PC. It should be powered by battery or usb and communication should be done by Bluetooth or USB. The memory had to be absurdly large or else I had to implement a trigger and sample profile that should be able to handle various situations. The later was the better solution. I did the PCB HW and firmware plus demo PC software that held all the functions/classes needed for another guy that did the final PC software, mechanic parts and HW installation.
I needed a simple hotplate, so I used a few resistors in parallel to get the power I needed. The goal was to reach about 100 degrease, and I was almost spot on when I used a laptop charger as power supply.
Read MoreYeep, got the latest PCB boards and components delivered. Anyone how thinks soldering is fun and wants to help ? 🙂
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I created a strain gauge multiplexer that is used for sensing the force on five (x,y,z) points on a wear tester.
It contains a multiple strain gauge amplifier and a multiplexer board.
The housing is finished. So all thats missing is the code for the controller and PC.
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I made a batch of totally 9 board that I have sent to seeedstudio for production.
Mostly the boards are for my PnP project, I was planing on waiting a few more weeks before sending the batch for production.
But i have to create the camera vision SW/HW function in quite a hurry because i took on the vision implementation as a curse project in school. So I desprately needed the light ring for the camera, aka lighthouse.
I already know that I am going to use some sort of a vision based alignment functions to be able to place component based on captured image.
The first approach is to find any solution that enables camera integration and vision based functions, so I can build my own shape detectors and alignment routines.
Tested many different solutions until i found EmguCV which is a C# wrapper to OpenCV which is a very capable vision platform.
So I did a small app to see if i could do a component pad search function.
And this is the result.
“I really have to switch to English in my videos, Sorry 🙂 “
Read MoreSo this is one of the milestones in a project, when the board is up and running and seams to be working as expected.
I am happy !!
But there is still a lot of functions that I have not yet tested, so there is still some time before i can be 100% sure everything is fine and dandy 🙂
The screen layout is just a “test” to see how it can look like.
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Read MoreFinally I manage to have some time over so I could solder my new solder station pcb boards. There is still a lot to be done before i get
this one up and running as planned , but still this is progress!!
The housing is still under construction, i have finished all cad and cam files.
But there is still a few hours in the workshop left until the housing is
completed.
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