Category Archives: sensors

Cool Monitor build for pools

If I still had a pool, this could be a build for me, helps monitor different aspects of the pool and equipment using an ES32 https://hackaday.com/2022/04/16/iot-pool-monitor-helps-you-keep-it-crystal-clear/

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Building a simple water sensor for Arduino

Should work with other controllers, basically you have a resistor in a circuit, and if it gets wet, the circuit is shorted out so you detect that. I put 2 wires in a sponge myself (separated) an when the sponge … Continue reading

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Making your own water level detector

Interesting build for an arduino to detect the level of a given water supply. Not so sure I would make one of these as a 6 pack of commercial ones costs $11. Still an interesting build. https://www.instructables.com/Building-an-Arduino-Water-Level-Detection-Sensor/

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Cool build for a smart buoy

The build is to measure aspects of the ocean. Its a nice build but not so sure if the average person can make it (the 3D print is pretty big). I wonder if they could switch to using plumping supplies … Continue reading

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Cheap Thermal Camera with RPi

Rather simple build once the author figured out how to get the RPi to talk to the camera. The camera is a MLX90640 made by Melexis. but you want the one with a controller board GY-MCU90640. Which runs for $80. … Continue reading

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Interesting distance sensor build to wake up a system

Author built a simple distance sensor system to wake up another device is something got close enough. http://www.instructables.com/id/IOT123-SR04-DISTANCE-TRIGGER-BRICK/

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Another switch with a clothspin

Seen these before, but this one is a bit different as its used in a water alarm, where the asprin disolves it will close the circuit and trigger an alarm. https://www.instructables.com/id/Simple-High-Water-Alarm/

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Make a water alarm system

Not too fond of the music in the build video.  But interesting build for a large flood area.  Like you are overfilling your pool or tub.  Cheap build too. http://www.instructables.com/id/How-to-Make-Water-Alarm-System-DIY-Project-5/

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Interesting build for a remote pool temperature monitor

Its a cheap build too.  Using an ESP8266 (these have been showing up in alot of projects lately).  The build itself is pretty simple but I wonder if the sensor should be somewhere else in the pool instead of inline … Continue reading

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OpenGarage…interesting, but how secure?

Interesting project.  But…not so sure how secure it is.  Its using Blynk for the Phone App. http://rayshobby.net/introducing-opengarage/

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