Variable Speed Cooling Fan for Raspberry Pi using PWM (video#138)
In video #131 we pimped a Raspberry Pi. One of the new features was a cooling fan which switched automatically on if CPU temperature was too high. Viewers suggested to make the speed of the fan variable. And this is, what we will do today. We also will learn a few things about Pulse Width […]
Short tutorial for translators of YouTube videos
After a few days of translating my videos, we found out, that there are basically two different ways: Translate may script using google translate, correct the translation, and then add the timing Using the transcript with the timing and translate the text manually With Google Translate You download my script from: https://github.com/SensorsIot/Scripts-for-my-videos and translate it with […]
Safe Shutdown for Raspberry Pi with Super Capacitors (#133 )
Idea of a Shutdown-Protector Create a signal for a GPIO of a running Raspi as soon as the supply voltage is interrupted to trigger a software which immediately starts a controlled shutdown. And to build some sort of “energy source” for a few seconds, until this shutdown is finished. Instead of batteries, we use small super […]
Creating subtitles for my YouTube channel
If you are a translator, please look at the “tutorial” blog here: http://www.sensorsiot.org/short-tutorial-for-translators-of-youtube-videos/ In video #132 I asked for help to create subtitles in different languages to make it easier for non native English speakers to follow the videos. I asked for two things: For translators for somebody who would write a small tool to support […]
LoRa Gateway as Wemos Shield
Recently I read, that the Dragino Single channel gateways do not work anymore (because of a change of the backbone). But I read also, that the small ESP8266 gateways still work. The problem seems to be solved. So, I built such a gateway. It can be mounted on a Wemos and you can also mount […]