Leigh Oliver leighleighleigh

Download the image builder

git clone [email protected]:Robertof/nixos-docker-sd-image-builder.git
cd nixos-docker-sd-image-builder

Configure for Raspi4

modify /config/rpi4/default.nix to increase size of boot partition
- this step is optional but I ran out of space in /boot pretty quickly with the default setting since I'm still learning and rebuilding a lot. Let's leave some room for trial & error.
- sdImage.firmwareSize = 1024;
modify /config/sd-image.nix
./rpi3 becomes ./rpi4

IP camera appliance with Ubuntu on a Raspberry Pi 3

Setup - Raspberry Pi 3 with camera module

Hardware bill of materials and setup instructions

Install Ubuntu 18.04 LTS (32 bit)

Link to the Ubuntu 18.04 image for the Raspberry Pi 3

Install PiCamera (python interface to camera)

In this article, I will share some of my experience on installing NVIDIA driver and CUDA on Linux OS. Here I mainly use Ubuntu as example. Comments for CentOS/Fedora are also provided as much as I can.

command	args	description
status	`[verbose]`	get current WPA/EAPOL/EAP status
ifname		get current interface name
ping		pings wpa_supplicant
relog		re-open log-file (allow rolling logs)
note	`<text>`	add a note to wpa_supplicant debug log
mib		get MIB variables (dot1x, dot11)
help	`[command]`	show usage help
interface	`[ifname]`	show interfaces/select interface

	#!/usr/bin/python
	# -- coding: utf-8 --

	# tf2_ros_example.py: example showing how to use tf2_ros API
	# Author: Ravi Joshi
	# Date: 2018/12/6

	# import modules
	import rospy
	import tf2_ros

	/**
	* ESP8266 Scanner - Scans for networks on the 2.4GHz band and prints them out to the console.
	* Program it onto your ESP8266, pull up miniterm, the Serial Monitor, etc, and view a list of
	* wireless networks on your computer.
	* Requres Arduino JSON (http://arduinojson.org/), downloadable from Library Manager or GitHub.
	* Or, set OUTPUT_JSON and consume the serial output with your favorite JSON parser.
	*
	* Created by Leonora Tindall in 2017 for the ESP8266.
	* This software is licensed under the GNU General Public License, Version 3.0.
	*/

	import websocket
	import thread
	import time
	import sys


	port = sys.argv[1]


	def on_message(ws, message):

	/*
	* This sketch illustrates how to set a timer on an SAMD21 based board in Arduino (Feather M0, Arduino Zero should work)
	* It should generate a 1Hz square wave as it is (thanks richdrich for the suggestion)
	* Some more info about Timer Counter works can be found in this article:
	* http://www.lucadavidian.com/2017/08/08/arduino-m0-pro-il-sistema-di-clock/
	* and in the datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/SAM_D21_DA1_Family_DataSheet_DS40001882F.pdf
	*/

	uint32_t sampleRate = 1000; //sample rate in milliseconds, determines how often TC5_Handler is called