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The cheapest Pneumatic Cylinder ever possible! less than $2
Rotary Tool Router
Etching With Electricity
Sheesh - you should see if you could market this.
Hacking and Casting a Universal Air Marker
~ World's Greenest WATER PUMP ~
How to Make some Charcoal
Comparison of capacitive soil probes
I've graphed the second data set in Excel and visually, there isn't that much difference between the two capacitor plates, well within what I'd expect for experimental error. Both stay pretty flat until 100mL has been added, and then climb in an almost linear manner. Fitting a trend line to the 100mL to 250mL measurements I get the following equations:"His": y = 22.2x - 1810, R^2 = 0.9798"Mine": y = 23.5x - 2075, R^2 = 0.9852Obviously the sand test shows a considerably different result, but I'd argue that this little experiment shows evidence that we don't need to overthink capacitive soil sensors. Just use a bigger plate. My local electrical supplier actually sells blank double sided pcb, so I may give that a go for an even easier approach.
Cyclone Dust Separator on the Cheap!
Low Budget CNC
-Dremelathe- Small multitool prototype
Quick Start to Nodemcu (ESP8266) on Arduino IDE
Fitzroy Storm Glass (18th Century Weather Prediction Device)
DIY Midori Style Traveler's Notebook
Would this work for TPU flexible filament?
I can't help thinking that the algae may still be wet - it's still very green when you put it on the fire. From my childhood (on a dairy farm making hay) while the plant material is still green, it still has a moderate amount of moisture in it.
Easy Bound Journal DIY
No-Sew Braided Leggings
Custom Iron-On Artwork Using a 3D Printer
Build your own 3d printer filament factory (Filament Extruder)
Transform a chinese 3D printer in a high precision dual 3D printer. Setting up: Marlin 1.0.2, Repetier 1.5.5, Slic3r 1.2.9 and Octoprint 0.12.0
Homemade Electric Kiln
Natural Apple Pectin Stock
Blood Orange Simple Syrup
Decoding and sending 433MHz RF codes with Arduino and rc-switch
Iron Pipe Standing Desk
Clay Flowerpot Bread/ Camping bread
How to make a Cloud Chamber (Cosmic Ray Detector)
Arduino Watch Build Instructions
Arduino Watch with Nokia 3110 screen
Make your own smart watch
Low Cost Aluminum Foundary
The Science of Biscuits
1 Gallon Batch of Cherry Mead (Cherry Melomel)
Back Yard Maple Syrup
How to make a cheap Attiny Arduino Board
Christmas Tree Napkin Fold
Complete Camping Hammock with Screen and Rainfly
How to create a beautiful stone trivet using sugru grips
Magnetic Window Screens for Car Camping
Versatile and Low Cost Digital Counter
Sous Vide Oven Controller
An emergency personal pocket stove
Emergency water from the ground in higher humidity
DIY Clawfoot Bathtub Couch
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