Author Archives: kass40

The various methods of switching the Sonoff RF flashed with tasmota firmware

There are a number of ways to switch the Sonoff RF flashed with the tasmota firmware. Make sure you have set-up the Sonoff RF for use with Mosquitto if you want thebelow Mosquitto MQTT commands to work. All 4 of … Continue reading

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Sonoff RF: 433MHz card teardown (not a teardown of the main ESP8266EX board)

I started writing this document 11 June 2019, & it’s still very much incomplete; when it is finished I will remove this line. Here is the Sonoff RF, shown in the image below In the image below I show the … Continue reading

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Sniffing Watchman Sonic radio transmissions & capturing these reliably using a USB-SDR dongle plugged into a Raspberry Pi

I started writing this document 11 June 2019, & it’s still very much incomplete; when it is finished I will remove this line. The watchman sonic is a universally used wireless Oil level reading system that works very reliably. It … Continue reading

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Sonoff RF: pairing a 433MHz remote control by creating the correct Radio Code using simple Arduino code

I started writing this document 11 June 2019, & it’s still very much incomplete; when it is finished I will remove this line. This article describes 433Mhz pairing a remote. This works with the original Itead firmware or the  Tasmota firmware … Continue reading

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Nokia 5110; Bad contact between red PCB and metal cased LCD causes 5110 screen flicker and continual contrast variation

Potential solution to the continual screen flicker and continual contrast variation problem, and it’s cause, is suggested at the end of this article. Photo 1 (below): The back of the PCB before the LCD is removed. Photo 2 (below): Removing … Continue reading

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Watchman sonic transmitter part, detail photos

Watch man sonic is a pair of two parts, transmitter(TX) and receiver(RX). The TX part reports the domestic kerosene oil tank level (ie how much fuel left) to the RX part which plugs into an electrical socket and can sit in … Continue reading

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Home Rule Now

Truths spoken. A rousing read 🙂 Home Rule Now.

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