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Archive for the ‘Electronics’ Category

RC5 device addressees and commands are partly “standardized”

March 5th, 2018 No comments

During my attempt to program an Atmel micro-controller to act as a remote controller sending RC5 commands, the original remote suddenly stopped sending the correct Standby code to the device and I noticed device ID part of the RC5 frame has changed from 0x10 into 0x11. I accidentally switched the original remote to a mode for a different type of appliance! I realized that after I found a nice PDF from Freescale semiconductor showing a table with common device IDs and command IDs.

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Categories: AVR, Electronics, Programming, Uncategorized Tags:

Controlling Micronova pellet stove motherboard – Stufe a pellet Aria Idro IR telecomando seriale

October 18th, 2015 183 comments

Here is how to control a pellet stove with a Micronova controller remotely either via IR commands or using the serial line.

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Categories: Arduino, Electronics, Programming Tags:

How to make RaspberryPi truly read-only, reliable and trouble-free

December 4th, 2014 93 comments

RaspberryPi is a nice, small device which can be used for various automation purposes, internet of things or as an advanced camera. I have been using 5 RPis as a camera with motion detection and post-processing. This application requires high reliability and it was a pretty long journey until all the issues were solved. Here I am writing the most important things I have learned so you don’t need to go through the same stuff again (my cameras were placed on a remote location, making the whole process more complicated).

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Categories: Electronics, Server stuff Tags:

Connecting an RS-232 device into Raspberry Pi

November 20th, 2013 2 comments

I own a VHF scanner Uniden UBC3500XLT and I wanted to control it remotely via its serial interface and Raspberry Pi. That task was not as easy as I expected it to be. :)

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Categories: Electronics Tags: