Category Archives: sensors

Cool Monitor build for pools

Posted on November 16, 2022 by robertwilkie

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

Posted on November 14, 2022 by robertwilkie

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

Posted on August 7, 2021 by robertwilkie

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

Posted on August 13, 2019 by robertwilkie

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

Posted on March 14, 2019 by robertwilkie

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

Posted on April 23, 2018 by robertwilkie

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

Posted on July 5, 2017 by robertwilkie

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

Posted on September 20, 2016 by robertwilkie

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

Posted on September 20, 2016 by robertwilkie

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?

Posted on March 18, 2016 by robertwilkie

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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