Motor mixer calculator for drones

Changing your motor mixer settings on Cleanflight/Baseflight and Mulltiwii just got a lot easier, the great people behind iforce2d.net created a simple GUI that will do all the math work for you, it will even provide a couple of common frames templates to use out of the box. You have to measure the distance between motor’s shaft center.. and thats it, seriously ! Have a look at the calculator.

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Trackpal for iOS

I’ve recently created my first app for Apple’s iOS, it’s name is Trackpal have a look at the Apple Store. TrackPal is the indispensable companion for your 4×4 off-road road-book navigation adventures. Featuring two tripmeter/odometers, one for total distance and another one for partial distance with support for metric and imperial units. TrackPal displays with large font two odometers: Partial distance Total distance The reset of each individual odometer will require a long press on the “reset” button, this will prevent accidental erase of data over bumpy roads. TrackPal displays additional information about your current position: Latitude and longitude coordinates using the decimal degree (DD) system Current course in degrees (0-360º) Instant speed This application uses the GPS on your device in high accuracy mode, the use of […]

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Software Defined Radio (SDR) on Ubuntu Linux

I live near the airport and always wanted to listen to the air traffic, so recently I decided to go forward with it and bought a cheap DVB-T USB dongle. It turns out that those cheap dongles can tune more than lousy TV channels as found out by Eric Fry when trying to make his dongle work under Linux, the chip allows transferring the raw I/Q samples to the host, which is officially used for DAB/DAB+/FM demodulation. Kudos also to Antti Palosaari and Osmocom for much of the work getting the RTL2382U and it’s associated tuners tamed allowing a low cost path into SDR for newbies like me. Please be aware that some dongles have different hardware: The RTL2832U outputs 8-bit I/Q-samples, and the highest theoretically possible sample-rate is 3.2 MS/s, […]

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Running LTSpice IV on Linux

Well since I started using Eagle CAD on Linux why not start using the most popular Spice simulator too, to start Linear Technologies only builds binaries for Windows and MacOS but LT Spice IV runs flawlessly within wine. Wine is really getting to a point where it is able to deliver something you can work on a daily basis without getting over-frustrated, the biggest missing part (for me) is a winroot manager, and here is when Play On Linux comes to the rescue allowing you to have a winroot for each emulated program which they call virtual drives. Play On Linux allows you to automate quirks and ugly hacks that some Windows applications require to be able to run within wine, the list is managed and verified by the POL developers, […]

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Eagle CAD ALT key not working under Ubuntu 14.04

As I’m a big fan of “the best tool for the job” I’ve been switching between Windows and Linux according to whatever I’m doing and for no particular reason it seems I always ran Eagle CAD on Windows. As anyone else I have my settings file all prepared with keyboard shortcuts to the most used tools so I rarely have to click on the toolbar with my mouse. Today I decided to stop using Windows for Eagle and installed it on my Ubuntu 14.04 laptop, as soon as I open the my current project schematic I started noticing that none of my keyboard shortcuts that use the <alt> key modifier were broken, <shift> and <ctrl> were fine.. well after some tweaking to map all the <alt> to something else […]

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