stonehippo

Bluetooth LE Programming On Raspberry Pi

I'm looking at building up some Bluetooth LE programming expertise on Linux, specifically for use with Raspberry Pi 3 B+ and Pi Zero W models.

This is a compendium of libraries and tools that I'm looking at to build that skill on.

DON'T FORGET!!!

On the Raspberry Pi Zero W, a user must be a member of the bluetooth group to work with tools like bluetoothctl. Set this up with:

baiwfg2

The initial source comes from sdcuike/issueBlog#4

http://greenteapress.com/wp/

https://papers.nips.cc

https://github.com/PacktPublishing free to download books code by Packet

https://github.com/EbookFoundation/free-programming-books Very immense

bloc97

Two Fast Methods of Generating True Random Numbers on the Arduino

Arduino true random number generator

B. Peng

December 2017

Abstract

The AVR series microcontrollers are a collection of cheap and versatile chips that are used in many applications ranging from hobbist projects to commercial infrastructure. One major problem for some hobbists is the lack of secure random number generation on the Arduino platform. The included pseudo-random number generator (PRNG) is very easy to defeat and is useless for any crypto-related uses. One recommendation from the Arduino Reference Manual is to use atmospheric noise from the chip's analog sensor pins as seed data^[6].
Unfortunately this method is extremely weak and should not be used to emulate a true random number generator (TRNG). Existing methods such as using the internal timer drift or using a dedicated generator are either too slow, requires extensive external hardware or modifications to the microcontroller's internal mech

asukakenji

Go (Golang) GOOS and GOARCH

All of the following information is based on go version go1.17.1 darwin/amd64.

GOOS Values

GOOS	Out of the Box
aix	✅
android	✅

ItKindaWorks

// EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3

#include "EmonLib.h"             // Include Emon Library



#define VOLT_CAL 148.7
#define CURRENT_CAL 62.6

EnergyMonitor emon1;             // Create an instance

nikhita

How to update the Go version

System: Debian/Ubuntu/Fedora. Might work for others as well.

1. Uninstall the exisiting version

As mentioned here, to update a go version you will first need to uninstall the original version.

To uninstall, delete the /usr/local/go directory by:

2E0PGS

If your running a x64 bit Ubuntu or other Linux and find USB transfers hang at the end apply this fix:

echo $((16*1024*1024)) > /proc/sys/vm/dirty_background_bytes
echo $((48*1024*1024)) > /proc/sys/vm/dirty_bytes

I suggest you edit your /etc/rc.local file to make this change persistant across reboots.

sudo nano /etc/rc.local

dzlab

package main

import (
  "github.com/pkg/sftp"
  "golang.org/x/crypto/ssh"
)

func main() {
  addr := “my_ftp_server:22"
  config := &ssh.ClientConfig{

fernandezpablo85

How to create a maven repository for your github project step by step

Clone your project in a separate folder

(note: replace ORGANIZATION and PROJECT)

git clone git clone git@github.com:ORGANIZATION/PROJECT.git my-repository

Cd into it

anildigital

docker rmi $(docker images -q -f dangling=true)