How to control many actuators like relays from one Arduino output pin? Use a strip of NeoPixel LEDs with LDRs as self-made optocouplers!
Project tutorial by Pedro52
Many publications exist about moisture sensors for applications, e.g. plant watering systems. Making a DIY Sensor is fun and cost-saving.
A self-made (cheap) water level sensor and water level indicator to measure 5 water levels in a reservoir tank.
Timelapses are great. Let us spice things up!
Project tutorial by Neeraj Rane
This is the simplest example of repulsive magnetic levitation.
Project tutorial by Mirko Pavleski
Thank you for your message , I did not paint or varnish the metal because it is allready chromium plated.
Excellent work, good job
To Rolf Varga
Dear Rolf, Please connect your questions with the project, so everyone who has similar questions can follow the conversation.
I need to know more about how and what you have done. Can you post pictures of the sensor that you have constructed and how. To which input of the NANO are you connecting? The NANO has an 8 bits ADC, whereas the ESP32 uses 12 bits, although I don't believe this is the problem. How is your electronics circuit build up?
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