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How to set up a basic Sinatra + React webapp in 2025

Let's say you want to use Ruby for the backend of a basic webapp but React on the frontend. Here's how.

(Note: All tested on January 13, 2025 with Ruby 3.3, Sinatra 4.1.1, and React 18.3. Configs may change over time.)

First, create the app folder and set up Sinatra:

mkdir my-sinatra-react-app

Setting up Pi Zero OTG - The quick way (No USB keyboard, mouse, HDMI monitor needed)

More details - http://blog.gbaman.info/?p=791

For this method, alongside your Pi Zero, MicroUSB cable and MicroSD card, only an additional computer is required, which can be running Windows (with Bonjour, iTunes or Quicktime installed), Mac OS or Linux (with Avahi Daemon installed, for example Ubuntu has it built in).
1. Flash Raspbian Jessie full or Raspbian Jessie Lite onto the SD card.
2. Once Raspbian is flashed, open up the boot partition (in Windows Explorer, Finder etc) and add to the bottom of the config.txt file dtoverlay=dwc2 on a new line, then save the file.
3. If using a recent release of Jessie (Dec 2016 onwards), then create a new file simply called ssh in the SD card as well. By default SSH i

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

研究者として生きていくコツ

これは卜部さんの優秀なプログラマーになるためのコツに影響されて書いたものです。

著者について

自分を構成する要素は、大きい順にシステムエンジニア、プログラマ、研究者だと思っています。でも、おそらく給料は「研究者」として払われているため、研究者として生きていくコツとしました。僕はさほど優秀とは言えませんが、とりあえずそれなりに長いことそれで食っています。大学の教授のウェブサイトに「研究者としてのコツ」みたいなことが書いてあることがありますが、これには「既に大学の教授になっている人が書いている」という強烈なバイアスがかかっています。もちろん参考になることも書いてありますが、「死ぬほど研究しろ、研究のことだけ考えろ」的な文章が多い印象です。これは普通の人にとって役に立たない助言です。これは平均的な研究者として生きていくための戯言、ポエムだと思ってください。

健康第一

Open File App\Providers\AppServiceProvider

Change method boot

use Carbon\Carbon;


public function boot()
{
	config(['app.locale' =&gt; 'id']);

If you are on a Mac, substitute command for control. Don't type the + (it means press both keys at once).

Shortcuts when in either command mode (outside the cells) or edit mode (inside a cell):

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	<?php

	class Container
	{
	private array $registry = [];

	public function set(string $name, Closure $value): void
	{
	$this->registry[$name] = $value;
	}

	#!/usr/bin/env python3
	__author__ = "Tim Brooks"
	__email__ = "[email protected]"
	__date__ = "2024-04-23"

	import datetime
	from enum import Enum, Flag
	import logging
	import serial
	import serial.tools.list_ports as list_ports

	# https://stackoverflow.com/a/44672195/3013522
	git reset --soft HEAD~1