Posts that are aimed at explaining something
The featured image of this blog post is by Chen from Pixabay
What is a real-time clock? Why do you need one? What are the use cases? How accurate can a real-time clock be? Which features can a real-time clock have? Which models are around? And which one should you buy?
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How do you communicate with your 3D printer? Carrying an SD card between your computer and the printer? This can end now using the SD-WIFI module! If you try to get it running on a Mac, some extra effort may be necessary.
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The featured image of this post is based on a picture by Florian-if published at Wikipedia under CC-BY-SA-3.0
Is it possible to build a hardware debugger for debugWIRE for less than €10? As it turns out, it is. You just have to make a few compromises and also do a bit of soldering and gluing.
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Although the typical Arduino programmer is probably not interested in writing assembly code, in some situations assembly programming is essential. Let’s have a look at these situations and see what one can do.
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When things go wrong, although your program logic appears to be correct, it is time to look at the signals going into the MCU and coming out of the MCU. The best tool for that is a logic analyzer.
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If you want to drive a 5×7 dot matrix display directly from your MCU, I have the right Arduino library for you. Flexible, easy to use, supporting low power operation, and a low memory footprint: DotMatrix5x7.
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Featured image by Andreluiz Cunha from Pixabay.
Running on batteries does not carry your Arduino project very far? Well, when you want to run an Arduino project on batteries, you have to spend some thoughts on minimizing power consumption. Here we will look at what you can do when you use an AVR MCU. Often you will be able to reduce the average current consumption to a few microamps!
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The Arduino Pro Mini is a very minimalistic Arduino board with a small footprint. For this reason, it is an ideal candidate for being used as the target board in a battery operated system. In this blog post I’ll show you how to minimize power consumption and how to burn a new bootloader that saves flash memory, allows debugging, and fixes an annoying WDT bug.
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The featured image is by Hebi B. on Pixabay
How can you use a stub in order to squash your software bugs? This blog post shows how to arrive in 7 easy steps at a working debugging solution using a gdb-stub for some 8-bit AVR MCUs. The only additional hardware you need is an ISP programmer in order to burn a new bootloader (well, if you are satisfied with a very slow running program, you do not even need this).
Featured picture: OpenClipart-Vectors on Pixabay.
One has to add to the title (quoted from a tweet by Filipe Fortes) that the detective suffers from a memory loss. Otherwise, the case could be solved easily. Similarly, with debugging: If I only knew what nasty things I have hidden in the source code, I could just remove them – but I simply do not know. In this blog post, we will have a look at what kind of tools one could use to find the skeletons hidden in the closet.
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