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Instructions to obtain WireGuard details of your NordVPN account. These can be used to setup a WireGuard tunnel on your router to NordVPN.

Source: https://forum.gl-inet.com/t/configure-wireguard-client-to-connect-to-nordvpn-servers/10422/27

Prerequisites

If you have any linux machine, use that or install a vm if you don't have one.

Get their official linux app installed. Make sure you have wireguard installed too. And set the used technology to Nordlynx by running nordvpn set technology nordlynx

New version: use JFFS for entware (instead of USB previously)

Source: https://www.linksysinfo.org/index.php?threads/how-do-did-you-set-up-entware.76744/page-2#post-329490

Log into router and enable jffs
Go to scripts page and add following to init script

mount -o bind / /jffs/root
mount -o bind /jffs/entware /opt

Connect aixun 3ta over SWD pins / stlinkv2

This instructions covers how to connect via openocd on linux platform. And assuming you have the STLINKv2 hardware dongle. And that you have wired it up correctly, to the aixun t3a's debugging port.

NOTE:

Case 1) The swd debugging port should normally only be connected up between your PC and the soldering station. When the target device (the aixun t3a) is fully powered off, and it's mains cable unplugged from the outlet. To avoid having dual powering (both connected), or to avoid grounding / reference issues.
Case 2) However for live debugging scenarios, or working on firmwares etc. Then you typically would instead disconnect the +3v3 power pin from the SWD port on the STLINKv2. And just tie the GNDs together. To keep the ground reference only. Then have the target DUT (the mcu in the aixun) being powered independantly by itself. Just being aware that this is more risky or delicate situation than when passively powering from the STLINKv2 in the safer

Arduino LCD display for HP 34401A

Here is an Arduino sketch which reads values from an HP 34401A over a serial connection and displays them on an LCD screen.

	cards.YMF724 'cards.YMF744'
	cards.YMF724F 'cards.YMF744'
	cards.YMF740 'cards.YMF744'
	cards.YMF740C 'cards.YMF744'
	cards.YMF754 'cards.YMF744'
	cards.CMIPCI 'cards.CMI8338'
	cards.CMI8738 'cards.CMI8338'
	cards.CMI8738-SWIEC 'cards.CMI8338-SWIEC'
	cards.CMI8738-MC4 'cards.CMI8738-MC6'
	cards.'E-mu APS' 'cards.EMU10K1'

	{
	"id": 58,
	"type": "PipeWire:Interface:Device",
	"version": 3,
	"permissions": [
	"r",
	"w",
	"x",
	"m"
	],

	#!/bin/sh

	INTERFACE="vpn0"
	MARK=100
	TABLE="vpn"
	SCRIPT_NAME="/etc/wireguard/scripts/vpn.sh"

	# set this to the interface(s) on which you want WAN traffic to
	# be routed through vpn. separate interfaces with spaces.
	# e.g. "br0" or "br0 br1" etc.


	Timing characteristics
	Horizontal scan range.... 73-180kHz
	Vertical scan range...... 30-120Hz
	Video bandwidth.......... 640MHz
	CVT standard............. Not supported
	GTF standard............. Not supported
	Additional descriptors... None
	Preferred timing......... Yes
	Native/preferred timing.. 3440x1440p at 60Hz

	# source discussion, over on superuser:
	# https://superuser.com/questions/125376/how-do-i-compare-binary-files-in-linux

	hex-binary-diff()
	{
	_diffcmd="$1"
	shift

	unset _diff_opts
	_arg="$1"

	[id:~] $ alsa-capabilities --samplerates
	1: `DICE' Analog audio output on device Pro40-00822d
	-hardware address: hw:0,0 (or hw:Pro4000822d,0)
	-sample rates per format: S32_LE: 384000, 352800, 192000, 176400, 96000, 88200, 48000, 44100
	-usb audio class: (n/a)
	-streamfile: (n/a)
	-character device: /dev/snd/pcmC0D0p
	-monitor file: /proc/asound/card0/pcm0p/sub0/hw_params
	2: `DICE' Analog audio output on device Pro40-00822d
	-hardware address: hw:0,1 (or hw:Pro4000822d,1)