‮ezaM MazeW

Enabling Swap and Hibernation on Arch Linux

This only works if you use systemd-boot and not GRUB or anything else.

Follow these steps to enable swap and hibernation on Arch Linux.

1. Check Your RAM and Swap Size

First, check your current RAM and swap usage to ensure the swap file is large enough to store the contents of your RAM:

hi

Connect ST7789 to ESP32

Wiring

ESP32	ST7789
GND	GND
3v3	VCC
D18	SCL
D23	SDA
D4	RES

Connect a 5V relay

I had issues connecting the relay to the wenmos d1-mini (ESP8266 or ESP-12F), turns out you must use the 3v3 pin not 5V.

relay	d1
VIN	3v3
GND	G
IN	D2

You can use any pin you want for IN, but check diagram below for safe GPIO pins that aren't used by something else.

#Oh no! this package could not be found aka how to fix oracle linux 7 not having any repos tl;dr run

yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm yum repolist

Guide on connecting a ST7789 display to an Arduino Nano.

I recently decided to order an arduino nano and a tft display from AliExpress. When I looked up online it took me some time to find a clear guide how to connect the display to the arduino, either the display had different pins or it was a slightly different model, but with some trial and error, I managed to get it to work.

What you'll need for this:

1x Arduino Nano
1x AdaFruit 1.3" 240x240 ST7789 display
6x jumper wires or whatever else you can use to connect

	async function getSongInfo(user) {
	const url = `https://ws.audioscrobbler.com/2.0/?method=user.getRecentTracks&user=${user}&api_key=${API_KEY}&limit=1&format=json`;
	const response = await fetch(url);
	const json = await response.json();
	const track = json.recenttracks.track[0];
	return { user: json.recenttracks["@attr"].user, artist: track.artist["#text"], name: track.name, image: track.image[track.image.length - 1]["#text"], playing: ((typeof (track["@attr"]) != "undefined") ? true : false) };
	}


	// example response:

	bpj
	bp6
	bqf
	bq5
	bq6
	bq8
	bq9
	bq0
	bse
	bs6

	program order;

	uses
	crt;

	var
	a: array[1..10] of char;
	d:char;
	i,c,r: integer;