There are plenty of articles on the installation of a DS1307 RTC module.
There are equally as many articles listing various installation/configuration problems.
The basic hardware issues relates to signal voltage difference on I2C bus, the Pi uses 3.3V whereas the DS1307 module uses 5V. You may...
Continue reading...A selection of commands to manage services from Raspian/Debian Jessie onwards:
Print active services:
sudo systemctl list-units -t service
Print all services:
sudo systemctl list-units -t service --all
Print status of a single service:
sudo systemctl status cron
Start/Stop/Restart/Relo...
Continue reading...The Pi 3 comes with on-board Bluetooth and WiFi interfaces. If these interfaces are not required they can be switched off by editing the boot configuration:
sudo nano /boot/config.txt
Add the following lines to the end of the file:
# wifi offContinue reading...
dtoverlay=pi3-disable-wifi
#bluetooth off
dtoverlay...
Many of my RaPi's are configured for a daily reboot to increase reliability. Despite many precautions and care being taken during coding some programs (including mine) suffer from [minor] memory leaks. Whilst these leaks don't cause any immediate issues, if the are run for months/years without resta...
Continue reading...This recipe describes how to cook up a Raspberry Pi as a VPN server to provide secure access to your network via a public internet connection.
The ingredients are:
Keeping the Raspberry Pi up-to-date with the latest version OS and installed software is quite easy.
It requires your Pi to have a network connection to the internet.
These commands will update raspian and perform a cleanup:
sudo apt-get updateContinue reading...
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo...
Git code repository is required by other installation procedures:
sudo apt-get install git
Apple File Protocol to provide file access via network:
sudo apt-get install netatalk
Continue reading...
Connecting the PN532 to the Raspberry Pi can be challenging unless you follow the required steps.
The easiest way to get up and running quickly is to use libnfc.
Here is the link to the nfc library source
https://github.com/nfc-tools/libnfc.git
And here are the instructions how to build...
Continue reading...Information for this article sourced from this site.
File sharing between Mac OS X and the Raspberry Pi is easier than I thought.
FIrst make sure you have a working internet connection on your RaPi, then start a terminal screen, enter "sudo su -" and follow the procedure below:
apt-get update...Continue reading...
If you have installed a downloaded image the file system size normally doesn't match the size of your SD card.
This article describes the process of expanding the file system to take up the full size of your SD card.
Step 1: VNC into your Raspberry Pi and double click the terminal application (...
Continue reading...Copying the SD card contents to disk is easy done, but it takes up storage space of the same size as the memory card. Although it compresses down to a reasonable size once it is expanded the OS has to handle a rather large file. Resizing the image makes it much easier to handle.
For this process I...
Continue reading...After you have configured your hotspot and you RaPi is up and running you may want to change the hostname of the Pi. The hostname is what you see when you log in by command line, at the top of your VNC window, in network connections and many other places. The default name is normally "raspberry" o...
Continue reading...Once you have the RaPi configured you may want to access your WiFi network. A word of warning: not all WiFi dongles work with the RaPi, before you attempt to configure your adapter look at this website to check compatibility.
The perquisite for this procedure is that you have access to the gui d...
Continue reading...Us Mac users are lucky, VNC comes with the operating system, we don't need to install any additional software as the technology underlying macOS screen share is VNC.
To use VNC click on the finder Icon (in your dock), go to the menu at the top and click on "Go" and select "Connect to Server ..."....
Continue reading...How to tether your Raspberry Pi to an Android phone for the purpose of providing an internet connection to the RaPi:
Firstly you should consider a high current (2A or more) USB hub as some phones draw a lot of current when they start charging (as soon as you connect to USB). The RaPi may not be ab...
Continue reading...Based on Raspbian (Debian Wheezy):
1) become root
sudo su -
2) Install x11vnc:
apt-get update apt-get install x11vnc
3) set password
x11vnc -storepasswd
enter a password of your choice
4) download startup script
cd /etc/init.d/
wget http://www.vk3erw.com/download/vncboot
5) make...
Continue reading...After downloading a RaPi image the image must be transferred to a memory card.
The memory card must be a class 10 (fast card) for any of the D-Star hotspot / repeater images.
On an Mac you can use Terminal to perform the transfer.
Start with this command to discover all disks (the memory card...
Continue reading...This author of the following article is Ted B Hale. The article is reproduced from this website for the purpose of grouping radio related RaPi articles together on this site. Although the article refers to MySQL server, the situation is very similar for a RaPi used as repeater controller if the u...
Continue reading...