Flux FPV

Multirotor Tech and DIY

Month: March 2017

A Safer Arming Switch (On the FrSky Taranis)

I am a strong supporter of switch arming over stick arming and I believe it is currently the more popular of the two methods. A typical configuration (which I use) is to have a simple two position switch on your radio set to arm/ disarm with airmode always on. However, this also creates the risk of accidentally bumping the arm switch and having your props spin up.  I am guilty of the same mistake – accidentally arming my quad in my hands and cutting my finger. Here are a few screenshots from my Taranis that show the method I use to mitigate this risk:

Essentially what this does is:

  • Set channel 5 (AUX1) to high – arming the quad if BOTH switches are not in the top position
  • Set AUX1 to low – disarming the quad if EITHER switch is in the top position

This means that it is extremely difficult to accidentally arm your quad as you need to flip two switches instead of just one, but it is still as quick and easy to disarm as you just need to flip one switch to the top position. I used the switches SE and SG, but you can use any switches that you are comfortable reaching.

TBS Racetracker Range Extension Kit Installation Guide

The TBS Racetracker is an extremely handy piece of equipment that lets you keep track of your lap times without having to put any extra equipment on your quad. It’s a great tool for those who enjoy racing as it helps you keep track of your progress and push yourself to get faster. However, one issue it suffers from is extremely poor Bluetooth range. Out of the box, I could barely walk 10 feet away from the unit without losing signal. Since the idea of the Racetracker is to leave it at the start gate and have your phone record and call out lap timings, this is quite an issue since you either have to stand very near the gate (dangerous) or leave your phone near the tracker ad check times later (which loses some of the functionality).

However it is possible to improve the Bluetooth range of the Racetracker. All it takes is to replace the stock antenna with a better 2.4GHz antenna. Some people use a regular FrSky receiver antenna, and others use a WiFi router antenna with a u.fl to SMA/RP-SMA pigtail. I chose to use the ‘official’ TBS Range Extension kit for a convenient and neat installation. I bought mine from GetTBS. Since it does not come with instructions, in this post I’ll be showing you how to install the range extension kit.

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