Category Archives: sensors

Make an Tachometer (RPM sensor) for a cordless drill motor

Posted on June 21, 2013 by robertwilkie

Nice write-up on how to convert the motor from a cordless drill to have a way to measure rotations on it. This is useful for speed control and positioning of the motor. http://www.instructables.com/id/Cheap-and-Easy-Tachometer-RPM-Sensor-for-Brushed/?ALLSTEPS

Posted in robots, sensors | Comments Off

Makea homemade pushbutton

Posted on June 3, 2013 by robertwilkie

HAHAHAH. OK I am not this cheap. However if you need a simple button in a pinch. This maybe the way to do it. Or perhaps for a custom push sensor…. http://www.instructables.com/id/DIY-Push-Button-2/

Posted in Cheap, sensors, Tinkering | Comments Off

Cheap $3 wireless transmitter

Posted on May 20, 2013 by robertwilkie

Nice idea on adapting some cheap transmitters, and using stereo in on a computer to receive the signals. I’ll have to keep this one in mind for the future. http://hackaday.com/2013/05/19/wireless-microcontrollerpc-interface-for-3/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29

Posted in Misc-Life, sensors | Comments Off

Nice homebrewed laser scanner

Posted on May 16, 2013 by robertwilkie

So you can scan in that object to print it out 🙂 Project looks simple enough, no so sure I can afford the camera being used. http://www.metaingegneria.com/scanner-laser-3d/

Posted in CNC/3D-printing, Misc-Life, sensors | Comments Off

One makerspace that hasn’t heard of a faucet

Posted on May 16, 2013 by robertwilkie

Guess they got tired of filling/buying water cooler bottles, so they man and automated bottle filler (faucet to the water cooler basically). Me…I see a different use here, automatic water gun loader…. http://hackadaycom.files.wordpress.com/2013/05/water-cooler-water-line-conversion.jpg?w=560&h=450

Posted in sensors, water | Comments Off

Pi in the Eye out for sale

Posted on May 15, 2013 by robertwilkie

The raspberry pi camera is available now for $25. Its basically a cell phone camera for the Pi. Has some promise but it would be nice to see the price lowered.

Posted in RaspberryPi, sensors | Comments Off

A simpler way to level your bed

Posted on May 6, 2013 by robertwilkie

I hate leveling the bed of a 3D printer, It seems to need to be done all the time. This is a nice simple way to setup the leveling quicker. My 2 cents, I would spread the wires out to … Continue reading →

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Using SDR to scan fire/police radio

Posted on April 30, 2013 by robertwilkie

SDR, software defined radio, is an interesting project where most of the radio receive bits is done on the computer. http://hackaday.com/2013/04/25/sdr-as-a-police-and-fire-radio-scanner/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29 https://sites.google.com/site/policescannerhowto/

Posted in Security, sensors | Comments Off

RPi door security system

Posted on April 30, 2013 by robertwilkie

Nice project where the RPi verifies the ID and then opens the door, or can be used to remotely open the door. I wonder what keeps the door “locked”. It sounds like its dependent on the garage door opener only. … Continue reading →

Posted in RaspberryPi, robots, Security, sensors | Comments Off

ODB-II to Android

Posted on April 29, 2013 by robertwilkie

Interesting article on converting ODB-II information from a car into something an android tablet can use. http://hackaday.com/2013/04/28/odb-ii-hacking-using-an-android-tablet/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29

Posted in android, sensors, Tinkering | Comments Off