James Cotton's Blog (7)

BrushedSparky v0.2

This is an update on the BrushedSparky that I posted about a month ago.

I got…


Added by James Cotton on March 25, 2015 at 4:00pm — 3 Comments

BrushedSparky - TauLabs integrated frame FPV brushed microquadcopter


OsoGrande got me into brushed microquadcopters recently. Sparky2 has some buffered outputs so at first I was just slapping it on frames and jury rigging things together. Very quickly, I wanted something more elegant.…


Added by James Cotton on February 28, 2015 at 5:27pm — 5 Comments

OneShot125 latency testing

I thought you guys might find this interesting. Support for OneShot ESCs was recently written for Tau Labs (http://taulabs.org) and it seems like most of the claims that it is good are largely subjective (which is perfectly fine). However, I wanted to really test the performance improvement with this…


Added by James Cotton on February 1, 2015 at 9:00am — 6 Comments

Tau Labs Altitude control loop architecture and INS tuning

So for the last week or two I have been looking a bit at the performance of the Tau Labs altitude control and INS filter we have and the altitude control loop.


One issue I was suffering from is that the velocity estimate would be biased because of variations in the accelerometer bias. I switched to using a 16 state version of the INS written by Dale Schinstock that included an estimate of the bias terms for…


Added by James Cotton on March 14, 2014 at 9:30pm — 15 Comments

New Tau Labs release

So Tau Labs just released a new software and firmware package. This works on windows, linux and mac. From the list of features:


Added by James Cotton on December 17, 2013 at 11:30am — 9 Comments

Tau Labs has MultiWii style Horizon Mode

For those of you flying Tau Labs or just looking to re-invigorate a CC3D and get some more fun, we implemented a "Horizon mode" based on the MultiWii code. What this does is when you keep the sticks near the middle, it will be in attitude mode (self leveling) and as you move the sticks further out it transitions into a rate mode. This is really fun for FPV because you have the ability…


Added by James Cotton on November 24, 2013 at 5:00pm — 9 Comments

Controlling a quadcopter with a wave of your hand

So I managed to interface my Leap Controller to the Tau Labs GCS and use it to control my Sparky based quadcopter by waving…


Added by James Cotton on August 24, 2013 at 9:00pm — 2 Comments

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