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atlemann.github.io | ||
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smayze.com
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| | | | | Developing firmware for an embedded remote sensor that needs to adhere to a specific protocol has challenges due to the limited resources and the complexity of the implementation. Experience on a previous project (a remote sensor gateway) demonstrated how Test Driven Development could assist when working on complex systems. This write-up describes the approach used... | |
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blog.cavelab.dev
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| | | | | In November last year - I started building a DIY security alarm system, using a Raspberry Pi as the controller. My plan was to make a self-sustained system, using proper alarm hardware - like PIR sensors and sirens. Integration with Home Assistant would be an add-on, not a requirement. I wanted the system to be as redundant and fault-tolerant as I could make it. This is a pretty long story, with some twists and turns - let's get into it ?? | |
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irq5.io
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| | | | | The advantage of Zigbee devices is that they are very low power, and they communicate in a wireless mesh network. The sensors are small and can work off a CR2032 coin cell for at least 2 years, maybe more. Depending on the type of sensor, they cost around US$10 and are readily available from various... | |
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jborza.com
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| | | Over a month ago I bought an Altera Cyclone IV board from a local seller, it seems to be listed on Aliexpress as well. Its marked as A-C4E6E10, and features: Altera Cyclone IV EP4CE6E22C8 FPGA chip with 6272 logic elements, 270 Kbits of memory 8-digit seven-segment LCD display 8 position DIP switch VGA output PS/2 input port (comes in handy to try out keyboard processing) buzzer a couple of push buttons a handful of IO pins, some of which can be used as a connector for a 1602/12864 display and 22 miscell... | ||
