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M5Stack Review
I’ve been looking forward to playing with an M5Stack for a few months – since it first came out, really (or at least since I became aware of this project). I have been interested in LoRa for a while, having a specific use for this technology in mind. At the same time, I need a…
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Basic BLE Functionality on the M5Stack
I am nowhere near a BLE expert – I have difficulties wrapping my mind around that thing, and so far regular Bluetooth has been good enough for me. But ESP32 have BLE, and I had a use case for Bluetooth. So might as well try… I have written, as a half joke, half proof of…
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Vroom Vroom
In Nitrous for the Arduino, I explained how to speed up code execution on Arduino machines, by replacing -Os directives with -Ofast. The procedure is slightly tedious, and every time I install a new version of the IDE, I have to set up things again. No more… In the background a sketch, compiled with the…
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Oy Vey, here’s a picchuh!
So, as I said in the previous instalment, once I had the data transfer from the OV528 sped up, I wanted to actually GET the photo displayed on my phone. I’m on Android (while I’ve been using Apple computers since 1987, I hate iPhones), and I really don’t like Java. So when I need a…
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Speeding up the OV528
Coding is mostly a hobby for me (although for a few years it did pay a large share of the bills), so when something doesn’t work properly, I don’t always have the time, patience, resilience to fix it right away – or sometimes for a long time. But then, episodically, I have some coding fits,…
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Experimenting with LoRa+ESP32
With the launch of ESP32, an upgraded version of ESP8266, and the popularization of LoRa (and popular means cheap[er]!), I have started playing with LoRa, having bought a bunch of integrated ESP32+LoRa+OLED machines. They’re cheap enough, and provide a good enough package to start experimenting. Each two-piece set comes loaded with basic sender/receiver sketches. You…
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External rootfs on the Omega2
One of the difficulties I faced when starting working on the Omega2 was the lack of space on the internal rootfs volume. Install python? Poof no more space. Install nodejs? Not even enough space. So while I intended to use the USB connector on my Arduino Dock 2 for the GPS, for now it’ll be…
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Peeling the Onion, layer by layer
Sorry, I couldn’t resist. I backed last year OnionIO’s Omega2 project, and recently received my reward. I have been since busy rewriting my main project with it, and it has been a pleasure. First off, if you invest in an Omega2, do get the + version. You’ll get an SD card, and you’ll thank me for…
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Nitrous for the Arduino
It’s not exactly a secret that Arduino boards are not very fast, as in, slow as molasses, really. Their lack of speed is usually a trade-off for other features – ease of access to low-level electronics, plug and play, cheap cost of entry. But I have started recently a project that requires a little more…
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NodeMCU and EEPROMs
I have an ongoing project that requires external storage of log data. I have tried quite a few versions of Android-like boards, and some time ago I turned, mostly for fun, to NodeMCU, as the WiFi part and extra memory looked like a big plus. However, my project started to burp after a few hours – mostly memory…
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