Oversized Derailleur Pulleys - 3D printing

Stock 12T compared to 14T and 15T oversized pulleys Oversized derailleur pulleys are like Hansel - So hot right now. Sure the benifits of an oversized pulley are probably pretty marginal (maybe a couple of watts... according to the folks trying to sell you them), but putting an oversized pulley jockey on your bike just gives it that certain je...Read More

Poormans Nest

[caption id="attachment_1616" align="alignright" width="300"] Ok, for sure not as sexy as the NEST[/caption] I start a lot of projects and never finish them. So in the spirit of documenting where I've been, here's my Poorman's Nest.  Here I'm using one of my Microview's I had laying around A potentiometer (on pin A0) A small digital temperature sensor (on pin 3)...Read More

$100 Quadcopter: The Sensor! MPU6050 6-axis IMU

[caption id="attachment_1515" align="alignleft" width="300"] My MPU6050 connected to my redboard[/caption] I bought this $30 triple axis accelerometer from sparkfun... The first thing we have to do is get it working! Wire it up. The MPU6050 uses a method of communication called IC2. I'm not an expert on this, but this is what you'll need to connect to an arduino uno  to...Read More

Tool of the Week: PowProject.com

Sometimes figuring out where to go skiing feel's like a roll of the dice.  Where's the snow deep enough to not hit rocks?  Where are the freshies at? In the backcountry, it gets even worse: Will the snow be windswept? Will it be steep enough to ski? Will it be too steep to ski safely? How's the avi danger? How...Read More