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Category: Lab

This category contains experiments and tests, which for me usually means messing around and playing with a particular concept, technology, device or whatever. May or may not contain actual “lab” tests.

TFT Adventures (Playing with a ILI9341-based display)

August 10, 2016
| No Comments
| Arduino, Electronics, Lab

Not long ago I purchased a few 320×240 touchscreen displays from ebay that looked pretty decent and were also fairly cheap. They conform to the Arduino shield form-factor, so they snap directly  onto any standard Arduino board, making them really easy to test and use. They also have an integrated microSD slot (connected to the same bus used by the display controller) which is a nice touch and widens […]

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Temperature Sensors

May 15, 2016
| No Comments
| Arduino, Electronics, Lab, Reviews

I wanted to add a temperature sensor to a project I’m working on, and while I already had selected the perfect IC for the job, I decided to test a couple of other options I had, to see how they fare in comparison. I was originally going to compare only 3 sensors; the popular LM35, the not-so-popular LM335 and the […]

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Brainfuck-on-Arduino: End Of File

November 23, 2014
| No Comments
| Arduino, Development, Electronics, Lab

Ok, so this is probably the last post I’ll make about my Brainfuck-on-Arduino project, basically because it has reached a point where I’ve already tried all the things I wanted to try and I’ve decided that there’s no point in taking it out of the breadboard and build a board for it. At least not […]

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Brainfuck-on-Arduino: Improving the performance

November 11, 2014
| No Comments
| Arduino, Development, Electronics, Lab

DISCLAIMER: Over the course of this post I’ll be dealing with parsing, programming practices, code refactoring, SPI bus oddities, caching techniques,etc. It’s a mixed bag of things and it’s far from being serious analysis on the topic of optimization. Please don’t expect anything particularly smart in this post like branch prediction, overlapping cache windows, partial block reads, etc. This […]

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Arduino SD Library support for MMC Cards

November 10, 2014
| 34 Comments
| Arduino, Electronics, Lab

So I’ve been fiddling a lot these days with Arduino’s SD Library. I’m doing experiments with SD Cards as part of my BOA (Brainfuck on Arduino) project and I already have a completely functional Brainfuck interpreter that runs on my Pro Mini board and uses a 23K256 (32KB) SPI RAM as BF “RAM space”. The problem I’m trying to solve now is PROGRAM space (where […]

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Playing with TI’s MSP430F5529 Launchpad

November 3, 2014
| 8 Comments
| Electronics, Lab, TI / MSP430

I was pretty excited when I learned that Texas Instruments has a line of cheap & open-source development tools for their MSP430 microcontroller family (10 years ago they only offered ridiculously overpriced proprietary tools). They apparently created this new line of programming hardware back in 2010, so I ordered one of their Launchpad boards the other day, which is a MSP430F5529 evaluation board […]

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