dkebler

Rockpro64 Power On Watchdog using esp8266 and Tasmota

Problem

Some times after power loss (12v) the rockpro64 will not fully power on when 12v is restored. It will enable 5V but then it will not "power on" which is indicated by pin 1 raising to 3.3v. This is fixed by pushing the power button for 5-8 seconds which for sure forces the rockpro off and then a single push of a second. We can use these facts to "push" the power using a relay powered by a esp8266 running the Tasmota firmware and a simple tasmota rule. Below are the details. You ONLY need to do this is you are using the rockpro64 in an unattended mission critical application (e.g a NAS box running your cloud server).

WARNING WARNING WARNING

I take NO responsibility if you brick/fubar your rockpro64 or wemos boards doing this. Please understand and test first. Don't just connect your watchdog to the rockpro64 rather set up a testbench like I did by using the 3.3v pin on the D1 mini and a switch instead of pin1 on the rockpro to simul

dkebler

#!/bin/bash
# (c) Wolfgang Ziegler // fago
#
# Inotify script to trigger a command on file changes.
#
# The script triggers the command as soon as a file event occurs. Events
# occurring during command execution are aggregated and trigger a single command
# execution only.
#
# Usage example: Trigger rsync for synchronizing file changes.

dkebler

#!/bin/bash
add-ppa () {

if [ $EUID != 0 ]; then
    	sudo bash -c "$(declare -f add-ppa); add-ppa $*"
	else
		VERSION=jammy
		KEYSDIR=/etc/apt/trusted.gpg.d
		KEYSERVER=keyserver.ubuntu.com

dkebler

#!/bin/bash 
# -eux
function confirm()
{
    echo -n "$@ "
    read -e answer
    for response in y Y yes YES Yes Sure sure SURE OK ok Ok
    do
        if [ "_$answer" == "_$response" ]
        then

dkebler

#!/bin/bash
# remove default evdi module and build and install this fork
# clone this  https://github.com/pioto1225/evdi/tree/amd_vmap_texture
# put this script in the parent directory
echo "**** this script must be run from the parent of the the evdi repo ****"
ls -la /usr/src | grep evdi
echo enter the latest evdi driver version
read version
echo "***** moving /usr/src/evdi-$version to evdi-$version.original ****"
sudo mv /usr/src/evdi-$version evdi-$version.original

dkebler

Reboot to {OS}

This a collection of notes and files used in my quest to create "Reboot to Windows" and "Reboot to Linux" scripts (and desktop shortcuts) for Linux and Windows respectively that automatically reboot my system and instruct rEFInd to auto-select the appropriate OS entry.

General Information

The key for achieving this is to modify the EFI Variable PreviousBoot with GUID 36d08fa7-cf0b-42f5-8f14-68df73ed3740, which rEFInd uses to store the last entry selected in the menu and, if using the + default entry, will be used to select the default OS. By doing this, we trick rEFInd into booting the OS we choose without having to be physically there to press the keyboard.

dkebler

#!/bin/bash

# Usage: 
#  share_dir [ -o <owner> -g <group> ] <directory> <list of space delimited users names/uid>
#  use . for current directory
# -o forces own for directory, default is $USER
# -g forces group name for directory, default is "users" and if not available then $USER
#  Note: script operates recursively on given directory!, use with caution

## HELPERS

dkebler

#!/bin/bash
# Version 0.21.0  8:26 PST, Nov 9, 2018
# inspried from this forum post  https://discourse.gohugo.io/t/script-to-install-latest-hugo-release-on-macos-and-ubuntu/14774/10
# if you have run into github api anonymous access limits which happens during debugging/dev then add user and token here or sourced from a separate file
# . ~/githubapitoken
#GITHUB_USER=""
#GITHUB_TOKEN=""

if [ "$GITHUB_TOKEN" != "" ]; then
echo using access token with script

dkebler

const net = require("net"), fs = require("fs");

let server, istream = fs.createReadStream("./sender/SC-02.pdf");

server = net.createServer(socket => {
    socket.pipe(process.stdout);
    istream.on("readable", function () {
        let data;
        while (data = this.read()) {

dkebler

const net = require("net"), fs = require("fs"), remote_server = process.argv[2];
let socket;

socket = remote_server ? net.connect(8000, remote_server) : net.connect(8000);

let ostream = fs.createWriteStream("./receiver/SC-02.pdf");
let date = new Date(), size = 0, elapsed;
socket.on('data', chunk => {
  size += chunk.length;
  elapsed = new Date() - date;