Michal Dziekonski (mdz) mdziekon

How I made my doorbell smart

The Problem

I have a simple door entry phone that buzzes when someone rings the bell and lets me 'buzz' them in. I would like some smarts. Firstly I want to be able to notify and automate when someone rings and secondly I would like to be able to buzz people in.

Entry phone systems vary throught the world and so it is unlikely this write-up will work for you, so I have spelt out the general principles I used and the steps I took.

The ingredients:

Raspberry Pico W
ESP home installed on the above

`curryRecord`

This is an example of a function whose logic lives in the type definition rather than in the function body.

/**
 * @name `curryRecord`
 *
 * Takes a unary function that takes a record as an argument, and makes the
 * record partially applicable. Returns a new function that takes a partial of

	#! /bin/bash
	mkdir -p /var/cache/kerneltest

	#Make a file system image for the VM, and mount it.
	if [[ -e /var/cache/kerneltest/fs.img ]]
	then
	rm /var/cache/kerneltest/fs.img
	fi
	truncate -s 2G /var/cache/kerneltest/fs.img
	mkfs.ext4 /var/cache/kerneltest/fs.img

	//
	// This file contains a JavaScript tag function to let you
	// define regexes without needing to backslash-escape every
	// forward slash in the regex text; good for URLs.
	//

	function regex(tag) {
	return new RegExp(tag.raw, "i");
	}