10 Fluid Level Sensors and how to use them (Arduino, ESP32, ESP8266)

Measuring levels of liquids is a common problem. Where I live, it is probably more the water level of the

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Unknown ESP32 saving modes: Light Sleep, Clock Reduction, Modem Sleep, Hibernation, and a few tricks

We all know that we send our ESP32s to deep sleep to save energy. But do you know the other

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Are Supercapacitors the better Batteries?

Often viewers ask in the comments: Why do you still use batteries and not supercapacitors for your projects? Good question.

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ESP32-S2 New Arduino USB Functionality: Cool Combination with WiFi

Up till now, emulating a keyboard or a mouse was only possible with an Arduino Micro or a USB host

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What is in my Mailbag?

Mailbag with many interesting things from very cheap to very expensive. I am a proud Patreon of @GreatScott!, @ElectroBOOM ,

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5 best power solutions for small projects

Are you interested in my way of powering small projects? After many discussions and evaluations, I created a favorite list

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How to work with a Real Time Operating System and is it any good? (FreeRTOS, ESP32)

Using a real operating system to simplify programming with the Arduino IDE. Is this possible and how? Let’s have a

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How to choose Radar Sensors (Tutorial). Incl. PIR and LIDAR

Radar is a valuable technology. Because of its unique features, it not only helped to win world war II. It

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How to receive and track LoRa Satellites (TinyGS). Incl. innovative ideas for your projects

Satellites are fascinating but costly and therefore only available to governments, the military, and, recently, also billionaires like Elon Musk

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#367 How Trust Kills Complexity

Trust is the biggest complexity killer. And one of the biggest assets. Why do I think so, and what is

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