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Tag Archives: I2C
Desktop Air Quality Meter
88 keer bekeken / viewsThis is the third and final post about measuring air quality. Hier kun je een Nederlandse vertaling van deze post vinden. Earlier posts are: The first post and this post distinguish themselves by the simplicity of … Continue reading
Posted in 3D printing, ESP32, Firmware, Hardware, WiFi
Tagged Air, ESP32, Firmware, Hardware, I2C, Particulate, Quality, WiFi
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Desktop Luchtkwaliteit Meter
108 keer bekeken / viewsDit is de derde en laatste post over het meten van luchtkwaliteit. Here you can find an English translation of this post. Eerder verschenen posts zijn: De eerste post en deze post onderscheiden zich door de … Continue reading
Posted in 3D printing, ESP32, Firmware, Hardware, WiFi
Tagged ESP32, Firmware, Hardware, I2C, Luchtkwaliteit, Matter, Particulate, WiFi
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Portable Fine Dust Meter on Batteries
224 keer bekeken / views This project was sponsored by In an earlier post I described the development of an aerosol sensor that measures how much fine dust is present in the air and sends these values to an MQTT … Continue reading
Extending GPIO pins on your Micro Processor
[ ]Somehow, no matter what micro processor I choose, I end up with too few GPIO pins for the projects needs or for what I want to do. For a recent project I switched from the ESP8266 to the ESP32 … Continue reading
Controlling Lots of Relays with only 2 GPIO pins
Piggyback board for 8- or 16-relays boards to control with I2C Continue reading
I2C Rotary Encoder
15,092 keer bekeken / views I will address two topics in this post. The first one is about Rotary Encoders and what you can do with them. The second is about the Inter-Integrated Circuit protocol (I²C), developed by Philips. Een … Continue reading
Posted in Arduino, Computer, ESP8266, Hardware, KiCAD
Tagged ATTiny84, I2C, Rotary Encoder
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BeeHave – a beehive data logger
[ ] A friend of my keeps bees as a hobby. I’m not fond of flying, stinging insects, but because he was so enthusiastic my partner and I went to visit an apiary in the ‘Corversbos’ in Hilversum and it … Continue reading