Author Archives: robertwilkie

Making a coil winder

This case the author wanted to make electro magnetic coils, but I could see this used for other builds.

Posted in Arduino, Cheap | Leave a comment

Using a ring to unlock a door

Well a ring with an RFID tag in it. There is an arduino that reads the tag and unlocks the door.

Posted in Arduino | Leave a comment

Nice portable windpower

Its a small portable windpower device that charges up a portable battery to use at any given point in time. Downside is the 3D printed parts could degrade overtime outside. Would be nice if there was a commercial (cheap) version … Continue reading

Posted in CNC/3D-printing, Wind | Leave a comment

3D printed servo

Interesting build for a geared DC motor to be used as a even more geared servo.

Posted in Cheap, CNC/3D-printing, robots | Leave a comment

Fancy circle center finder

This is a bit more fancy than I would have gone, but its a nice centerfinder for a circle.

Posted in Tools | Leave a comment

Using U-Bolts for fence post clamps

Basically the author cuts a ubolt in half, uses some scrap for the end with a knob, and bam, fence post clamps for a table saw. Its a cheap method to do this, but…I have seen some fence post clamps … Continue reading

Posted in Tinkering | Leave a comment

Cool homemade wind tunnel

This was built mostly for kids. Its a nice build where kids can put stuff inside the tube and watch it go up.

Posted in Misc-Life, Teaching and Learning | Comments Off on Cool homemade wind tunnel

Cheap PVC pipe gimbal for phone

I could also see making this for cameras too. Nice cheap build that you can do to help keep your camera level and you record and move around.

Posted in Cheap, Tinkering | Comments Off on Cheap PVC pipe gimbal for phone

Making a bicycle bottle holder from PVC pipe

Not so sure I would do this, the author basically takes a PVC pipe (thin one) that the bottle fits in, and cuts it to size and puts some nice shaping on it. Interesting build

Posted in Tinkering | Comments Off on Making a bicycle bottle holder from PVC pipe

Making a simple variable capacitor

Clever build with 3D printed parts and some PCB boards. Good way to teach variable capacitance to folks.

Posted in CNC/3D-printing, Teaching and Learning | Comments Off on Making a simple variable capacitor