Install PIP on Synology NAS
Python3 can be installed via the Synology DSM Installation Center, but pip is not installed. Here is a short how to on how to install pip.
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Embed Mermaid in Jekyll without plugin
Mermaid is a simple markdown-like script language for generating charts from text via javascript.
I would like to show you how you can enable rendering of mermaid diagrams without plugin in your Jekyll blog/site which is useful for Github pages.
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From Evernote to Joplin
For the past year, I’ve been using Joplin for my note management. Previously, I had used Evernote for years, but wanted to get away from it, because all notes stored in the cloud.
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ESP32 battery/solar powerd environmental sensor
This year I tinkered with an environmental sensor, which should be solar powered and transmit the readings via LoraWAN (thethingsnetwork).
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Making an APC Back UPS CS500 smart
I still have an APC Back-UPS CS500 which protects my Synology, Rasperry PI and co.
Since it’s not network-capable and only has “Simple Signalling”, I want to do this with an ESP8266 smart.
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Own syncserver with Firefox 80 (79 on Android)
Since the Firefox update to version 80 and 79 on android a few things have changed to be able to use your own syncserver as described in the blog post Setup your own Firefox Sync Server with Docker.
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Docker monitoring
with Grafana, prometheus, cadvisor and exporter
ESP32 DeepSleep and LoraWAN OTAA join
When the ESP32 goes into DeepSleep and wake up, it will not restart the code execution from where it entered DeepSleep, like an ATmega witch restarts code execution at the same place including all set variables. The ESP32 starts in the Setup function an reinitializes all variables, this means that...
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Low power Arduino Pro Mini
For various projects where a long runtime with batteries is important I use a modify Arduino Pro Mini 328 3.3V/8Mhz (ATmega328P).
As an example a flashing sketch is used, which turns the LED on for 1 second and off for 8 seconds.
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gnupg cannot connect to keyserver
keyserver receive failed: Connection refused
On a docker project where i had to add gnupg keys i always got an error keyserver receive failed: Connection refused. After a while of troubleshooting, i realized it’s not a connection or DNS problem. But that the Dirmngr did not use the configured DNS servers of the system. gpg...
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