mnishiguchi

Nerves Quickstart

For those exploring [Nerves] for the first time, we recommend [Nerves Livebook]. It allows you to try out the Nerves project on real hardware without needing to build a project from scratch.

Within minutes, you'll have a [Raspberry Pi] or [Beaglebone] running Nerves. You'll be able to run code in Livebook and work through Nerves tutorials from the comfort of your browser.

No prior knowledge about the [Elixir] programming language is required. You can learn it in [Nerves Livebook].

mnishiguchi

Nerves Quickstart

初めて [Nerves] 試す方には[Nerves Livebook]をお勧めします。

[Nerves Livebook]という予めビルドされたファームウェアが公開されているので、それをダウンロードして[microSD カード]に焼くだけで簡単に氣樂に[Nerves]を樂しめます。[Livebook] のノートブック上で[Elixir]コードを実際に実行しながら進められるので、ウェブブラウザで快適に 楽しく[Nerves] を学べます。

[Elixir]コードを実行しますが、[Elixir]言語に関する知識は特に不要です。なぜなら、[Nerves Livebook]上で[Elixir]言語を学ぶこともできるからです。

mnishiguchi

Frankさんのカスタム二進数時計基板

Mix.install([
  {:circuits_spi, "~> 2.0 or ~> 1.0"},
  {:kino, "~> 0.12.2"}
])

基板の設計

mnishiguchi

Nerves system versions

	rpi	rpi0	rpi2	rpi3a	rpi3	rpi4	bbb	x86_64	osd32mp1
OTP 25.0	1.19.0	1.19.0	1.19.0	1.19.0	1.19.0	1.19.0	2.14.0	1.19.0	0.10.0
OTP 24.3.2	1.18.4	1.18.4	1.18.4	1.18.4	1.18.4	1.18.4	-	1.18.4	0.9.4
OTP 24.2	1.18.3	1.18.3	1.18.3	1.18.3	1.18.3	1.18.3	2.13.4	1.18.3	0.9.3
OTP 24.1.7	1.17.3	1.17.3	1.17.3	1.17.3	1.17.3	1.17.3	2.12.3	1.17.3	0.8.3

• officially supported hardware ports

mnishiguchi

Inky pHAT weather example

About

Inky pHAT is an electronic paper (ePaper / eInk / EPD) display for Raspberry Pi.

Let's do something similar to Pimoroni's Inky pHAT weather example in Elixir. Here is Pimoroni's Python code.

Underjord's Youtube video Raspberry Pi, eInk and Nerves with Livebook introduces you to the basics of Inky on Nerves firmware.

mnishiguchi

Inky pHAT name badge example

About

Inky pHAT is an electronic paper (ePaper / eInk / EPD) display for Raspberry Pi.

Let's do something similar to Pimoroni's Inky pHAT name badge example in Elixir. Here is Pimoroni's Python code.

This Youtube video Raspberry Pi, eInk and Nerves with Livebook by Underjord introduces you the basics of Inky on Nerves firmware.

mnishiguchi

{"version":1,"resource":"file:///Users/mnishiguchi/Code/mnishiguchi/installers/setup_macos.sh","entries":[{"id":"gGRq.sh","timestamp":1706054272419}]}

mnishiguchi

Rails - redirect - friendly forwarding

A: Using session

• https://www.mnishiguchi.com/2016/07/15/friendly-forwarding-in-rails/

B: Using querystring

QuestionsController

mnishiguchi

JS - URL

getParameterByName

• https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript/901144#901144

Ensure valid web url - Prepend url scheme if necessary

// Prepends "http://" to a URL that doesn't already contain "http://"
const prependUrlScheme = url => {

mnishiguchi

Rails google places client

• https://github.com/qpowell/google_places

Gemfile

gem 'google_places'

Make a PORO