Author: Paul


ET-SW01 – A very low consumption mailbox sensor

Introduction With the amount of online shopping happening, which only became more during the Covid-19 pandemic, it would be handy to know when you receive something in your mailbox. Monitoring your mailbox with a remote...

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ET-GC01 / ET-GC02 – Geiger counter

Introduction As with many designs, there is something which triggers the creation. As part of a bigger design, which will be published in the future, we created a small geiger counter module which can be... ET-AD01 0

4 channel Analog input/digital in/out controller- ET-AD01

Introduction The ET-AD01 is 4 channel Analog input / 4 channel digital in/out controller. As mentioned in one of our previous blog posts, a design idea is sparked in several ways. In this case...

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ESP32-H2 announced! Comes with Bluetooth LE and Zigbee support!

Today Espressif systems, the company behind the ESP8266 and ESP32 controllers, announced a new generation of their ESP32 lineup. In this new generation, Espressif will use again the RISC-V architecture CPU like in the ESP32-C3 ...


Not all ESP32 modules are the same.!?

Background During the extensive testing of our designs we ran into issues with some modules not wanting to boot up after a power cycle. This was happening about 8 out of 10 times. The first...


The birth of a design

The ET-AL01  Analog LED Controller The process of designing a circuit starts with an idea. Sometimes the idea is based on a question of someone else, and sometimes it is just seeing the need or...


5 channel Analog LED controller – ET-AL01

Introduction Michel asked me to design an analog LED controller with 5 channels, since he wanted to be able to control a nice LED strip with an RGB LED and a warm white and cool white...

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Soldering is a fundamental skill you should master if you would like to build our projects. In this tutorial, we outline the basics of soldering. You’re worried things might get complicated? Well, just carefully read...

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