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12/04/2022

Creating your very own 56K Dial Up Internet connection in 2022

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I've recently been bitten by the analog telephony bug (again) and thought I'd have a go at creating a dial up Network Access Server ...
18/12/2021

Measuring central heating return temperature with ESPHome, Home Assistant, and a Inkbird IBS-TH1

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I'm currently renting and the boiler in my flat is old and lacking smarts. Last year I had a Drayton Wiser Thermostat installed which I...
17/12/2021

M5Stack Atom Lite + esphomeflasher = "Error: Reading chip details failed: Timed out waiting for packet header"

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I recently purchased a M5Stack Atom Lite ESP32 module to use with ESPHome. It wouldn't flash with the browser, so I downloaded the binar...
15/12/2021

Mikrotik RouterOS - "received unsupported protocol 0x2145"

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I've recently been playing with L2TP tunnels between Cisco and Mikrotik gear in an LAC/LNS type configuration. The L2TP tunnel was comi...
10/12/2021

Restoring a GPO 332 Bakelite Telephone

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I've previously restored several old Bakelite GPO 300 series telephones and had a couple of people ask me to document how I go about it...

Adjusting a GPO No. 12 Dial with a Digital Oscilloscope

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In order for an exchange to detect the "pulses" a rotary dial generates, the timing needs to be within an acceptable range. There...

Cleaning a GPO No. 12 Dial

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Rotary telephone dials are a thing of beauty. They're entirely mechanical but manage to accurately and consistently "pulse" a ...