ARTICLES
Investigations into using ABS, polycarbonate and sheet metal enclosures to house electronics with a focus on getting that radio signal (wifi, 3G/4G) out of the box Requirements Weatherproof. IP66 = no dust and no water …
Using a AWS Linux server, and Raspberry Pi Zero clients Situation Lots of linux devices (and embedded devices) behind firewalls without public IP address Publicly accessible computer (AWS) Goals Connect from the server (or office …
Test OpenVPN server on it's standard UDP port ping myserver.com nc -vzu myserver.com 1194 telnet is so 2020 so use nc which does UDP too -v verbose -z test daemon -u UDP Get a list …
There's a few tutorials and references for debugging a python program on a remote (e.g. pi) computer. I had to fiddle a fair bit to get VSCode, ssh and debugpy to work. Here is how. …
To test time-dependant programs, such as timelapse camera, we can fudge the system time (sleep,. now()) in Python. Some options are: https://github.com/spulec/freezegun/ This is easy to use, but doesn't manage sleep(). Use monkeypatch to override …
Notes on how to install and tune a HyperV VM running Ubuntu linux, for development. Did this March 2020. Did it on an older 6430u Dell and a brand new Dell laptop. VM HyperV Need …
Goal Make a really simple timelapse camera. Runs on a Pi and uploads photos when WiFi available Always taking photos and saving. Always trying to upload photos. Wifi setup to act as host or client …
Setup SD Card on another linux machine to install headless I use Desktop Raspberry Pi OS distro. This is tested on a Pi Zero and a Pi 4 in Feb 2020. Insert a new SD …
There's heaps on this on the internet and a good book . Here is my usage, which is useful for IoT connections. Remote Server Access I want to connect remotely to a web server on …
I need to flash the IotaWatt firmware (and write new files to the SD card) for two reasons: firstly I have a bricked IotaWatt, and secondly I want to try to modify the firmware to …
Instructions as of late 2019! I used a Pi Zero W. This works but was pretty slow and awful for a my application. I then tried with a RPi 4B 2Gb and a RPi 3B. …
Unlike Grafana 5, we can't use the ' old' method of a proxy login to get a cookie for semi-permanent login. This post investigates options to achieve the goal of: Provide a user a "secret" …