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Thingy:91 cellular vibration sensor

Jul

26

2023

A year ago I published an article about a very simple Vibration Logger using an Arduino Uno, an SD card and an accelerometer. Recently, the need to measure vibration came up again, but this time I wanted something better. A device that will let me monitor the readings from anywhere without the need to go ...

Arduino Vibration Logger 2

Feb

18

2022

Recently I have had to monitor the operation of a system of pumps over a period of a few days. Monitoring in person would be a waste of time and would be a pain to do at night. The operation state of the pumps can be determined by the vibration of the system. When the ...

Integrating 433Mhz smoke detectors with Home Assistant 13

Oct

13

2020

Smoke detectors are simple and effective means for saving lives and reducing damage to property in case of a fire. You should use smoke detectors in your house even if your local regulations don’t require you to do so. All smoke detectors make a loud beeping alarm sound if smoke is detected, but some models ...

Making a proper adapter board for the “smart” WiFi Rinnai 2

Sep

4

2020

This is a quick follow-up post to my previous article about converting a Rinnai heater device to a smart device and controlling it with WiFi. Previously, when making the board that connects between the ESP32 and the traces of the Rinnai control panel, I did something that is not per-spec. I was using the ESP32 ...

Changing a “dumb” Rinnai water heater to a smart one 33

Aug

18

2020

This article covers a home automation project, in which I extended a control panel of a Rinnai gas water heater with an ESP32. The ESP32 then functions as an interface between the control panel and Home Assistant, a home automation software. tl;dr, the ESP32 sits as a MitM (proxy) on a few data lines inside ...

DLNA or who the hell needs a “smart” TV? 1

Aug

10

2013

Most consumers prefer integrated solutions. A gadget that does everything and the more the merrier. I think that most of the time, you can get a better solution if you integrate top-of-category components yourself. Especially if, like me, you love technology and are not afraid of integrating. A few months ago, when I was shopping ...