Winsen ZE25A-O3 – ozone sensor
I’m testing a new sensor from Winsen. It is ZE25a-O3 and as name promises it is ozone (O3) sensor. Last
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Remote finger
With DIY, you use the tools you have at hand to solve the problems you encounter. Often, things are created
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ESP01 and DHT11
When I wrote about ESP01 and relay module this was obvious, that some similar modules should be available. And yes,
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Connecting 4″ 480×320 ST7796 LCD module to ESP8266
We have ST7796 driven LCD modules. Display has diameter 4″ and resolution 480×320. This module has also resistive touch screen,
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Back in time, for many of us…
First, we are bringing back posts with some interesting projects found on internet. Won’t be much and (of course) we
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Standalone ArduCam Mini 2MP module and ESP32 board
ArduCam cameras are esy to integrate with ESP8266 or Arduino. But if You need to connect them to ESP32 almost all examples are for ESP32-CAM with hardwired connection. Learn how to connect standalone OV2640 to generic ESP32 board.
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Quick female connector
When module, sensor has golpins in standard 0.1″ raster as connector the best quick, yet sturdy connection can be made
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Arduino and LED display – matrix driven by MAX7219
MAX7219 is chip to drive 7seg LED displays. Not just one, but 8 of them. 7 seg – but 8
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MTP40-F NDIR type CO2 sensor from MemsFrontier
CO2 level measurement is something You are asking about often. I’d like to add good CO2 sensor to NAM, however
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Change GPIO used by ESP01 relay module
Today we have added new ESP related module to Nettigo offer. It is small relay module for ESP01. Small size,
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